diff --git a/apps/sim/blocks/blocks/posthog.ts b/apps/sim/blocks/blocks/posthog.ts
index 42c75de04c2..40fb4ecb07d 100644
--- a/apps/sim/blocks/blocks/posthog.ts
+++ b/apps/sim/blocks/blocks/posthog.ts
@@ -32,12 +32,15 @@ export const PostHogBlock: BlockConfig<PostHogResponse> = {
         { label: 'List Insights', id: 'posthog_list_insights' },
         { label: 'Get Insight', id: 'posthog_get_insight' },
         { label: 'Create Insight', id: 'posthog_create_insight' },
+        { label: 'Update Insight', id: 'posthog_update_insight' },
         { label: 'List Dashboards', id: 'posthog_list_dashboards' },
         { label: 'Get Dashboard', id: 'posthog_get_dashboard' },
+        { label: 'Create Dashboard', id: 'posthog_create_dashboard' },
         { label: 'List Actions', id: 'posthog_list_actions' },
         { label: 'List Cohorts', id: 'posthog_list_cohorts' },
         { label: 'Get Cohort', id: 'posthog_get_cohort' },
         { label: 'Create Cohort', id: 'posthog_create_cohort' },
+        { label: 'Update Cohort', id: 'posthog_update_cohort' },
         { label: 'List Annotations', id: 'posthog_list_annotations' },
         { label: 'Create Annotation', id: 'posthog_create_annotation' },
         // Feature Management
@@ -50,11 +53,13 @@ export const PostHogBlock: BlockConfig<PostHogResponse> = {
         { label: 'List Experiments', id: 'posthog_list_experiments' },
         { label: 'Get Experiment', id: 'posthog_get_experiment' },
         { label: 'Create Experiment', id: 'posthog_create_experiment' },
+        { label: 'Update Experiment', id: 'posthog_update_experiment' },
         // User Engagement
         { label: 'List Surveys', id: 'posthog_list_surveys' },
         { label: 'Get Survey', id: 'posthog_get_survey' },
         { label: 'Create Survey', id: 'posthog_create_survey' },
         { label: 'Update Survey', id: 'posthog_update_survey' },
+        { label: 'Delete Survey', id: 'posthog_delete_survey' },
         { label: 'List Session Recordings', id: 'posthog_list_session_recordings' },
         { label: 'Get Session Recording', id: 'posthog_get_session_recording' },
         { label: 'List Recording Playlists', id: 'posthog_list_recording_playlists' },
@@ -95,6 +100,7 @@ export const PostHogBlock: BlockConfig<PostHogResponse> = {
           'posthog_list_feature_flags',
           // Experiments
           'posthog_create_experiment',
+          'posthog_update_experiment',
           'posthog_get_experiment',
           'posthog_list_experiments',
           // Data Management
@@ -113,12 +119,15 @@ export const PostHogBlock: BlockConfig<PostHogResponse> = {
           'posthog_list_insights',
           'posthog_get_insight',
           'posthog_create_insight',
+          'posthog_update_insight',
           'posthog_list_dashboards',
           'posthog_get_dashboard',
+          'posthog_create_dashboard',
           'posthog_list_actions',
           'posthog_list_cohorts',
           'posthog_get_cohort',
           'posthog_create_cohort',
+          'posthog_update_cohort',
           'posthog_list_annotations',
           'posthog_create_annotation',
           // Surveys & Recordings
@@ -126,6 +135,73 @@ export const PostHogBlock: BlockConfig<PostHogResponse> = {
           'posthog_get_survey',
           'posthog_create_survey',
           'posthog_update_survey',
+          'posthog_delete_survey',
+          'posthog_list_session_recordings',
+          'posthog_get_session_recording',
+          'posthog_list_recording_playlists',
+          // Configuration
+          'posthog_list_projects',
+          'posthog_get_project',
+          'posthog_list_organizations',
+          'posthog_get_organization',
+        ],
+      },
+    },
+    {
+      id: 'host',
+      title: 'Self-Hosted Host',
+      type: 'short-input',
+      placeholder: 'posthog.mycompany.com',
+      condition: {
+        field: 'operation',
+        value: [
+          // Feature Flags
+          'posthog_create_feature_flag',
+          'posthog_update_feature_flag',
+          'posthog_delete_feature_flag',
+          'posthog_get_feature_flag',
+          'posthog_list_feature_flags',
+          // Experiments
+          'posthog_create_experiment',
+          'posthog_update_experiment',
+          'posthog_get_experiment',
+          'posthog_list_experiments',
+          // Data Management
+          'posthog_list_property_definitions',
+          'posthog_get_property_definition',
+          'posthog_update_property_definition',
+          'posthog_list_event_definitions',
+          'posthog_get_event_definition',
+          'posthog_update_event_definition',
+          // Core Operations
+          'posthog_capture_event',
+          'posthog_batch_events',
+          'posthog_list_persons',
+          'posthog_get_person',
+          'posthog_delete_person',
+          'posthog_query',
+          'posthog_evaluate_flags',
+          // Analytics
+          'posthog_list_insights',
+          'posthog_get_insight',
+          'posthog_create_insight',
+          'posthog_update_insight',
+          'posthog_list_dashboards',
+          'posthog_get_dashboard',
+          'posthog_create_dashboard',
+          'posthog_list_actions',
+          'posthog_list_cohorts',
+          'posthog_get_cohort',
+          'posthog_create_cohort',
+          'posthog_update_cohort',
+          'posthog_list_annotations',
+          'posthog_create_annotation',
+          // Surveys & Recordings
+          'posthog_list_surveys',
+          'posthog_get_survey',
+          'posthog_create_survey',
+          'posthog_update_survey',
+          'posthog_delete_survey',
           'posthog_list_session_recordings',
           'posthog_get_session_recording',
           'posthog_list_recording_playlists',
@@ -392,7 +468,7 @@ Return ONLY the JSON array.`,
       placeholder: 'HogQL query or JSON object',
       condition: {
         field: 'operation',
-        value: 'posthog_create_cohort',
+        value: ['posthog_create_cohort', 'posthog_update_cohort'],
       },
     },
     {
@@ -431,7 +507,10 @@ Return ONLY the JSON array.`,
       title: 'Insight ID',
       type: 'short-input',
       placeholder: 'Insight ID',
-      condition: { field: 'operation', value: 'posthog_get_insight' },
+      condition: {
+        field: 'operation',
+        value: ['posthog_get_insight', 'posthog_update_insight'],
+      },
       required: true,
     },
     {
@@ -442,12 +521,28 @@ Return ONLY the JSON array.`,
       condition: { field: 'operation', value: 'posthog_get_dashboard' },
       required: true,
     },
+    {
+      id: 'pinned',
+      title: 'Pinned',
+      type: 'switch',
+      condition: { field: 'operation', value: 'posthog_create_dashboard' },
+    },
+    {
+      id: 'useTemplate',
+      title: 'Template',
+      type: 'short-input',
+      placeholder: 'Product analytics',
+      condition: { field: 'operation', value: 'posthog_create_dashboard' },
+    },
     {
       id: 'cohortId',
       title: 'Cohort ID',
       type: 'short-input',
       placeholder: 'Cohort ID',
-      condition: { field: 'operation', value: 'posthog_get_cohort' },
+      condition: {
+        field: 'operation',
+        value: ['posthog_get_cohort', 'posthog_update_cohort'],
+      },
       required: true,
     },
     {
@@ -470,7 +565,10 @@ Return ONLY the JSON array.`,
       title: 'Experiment ID',
       type: 'short-input',
       placeholder: 'Experiment ID',
-      condition: { field: 'operation', value: 'posthog_get_experiment' },
+      condition: {
+        field: 'operation',
+        value: ['posthog_get_experiment', 'posthog_update_experiment'],
+      },
       required: true,
     },
     {
@@ -480,7 +578,7 @@ Return ONLY the JSON array.`,
       placeholder: 'Survey ID',
       condition: {
         field: 'operation',
-        value: ['posthog_get_survey', 'posthog_update_survey'],
+        value: ['posthog_get_survey', 'posthog_update_survey', 'posthog_delete_survey'],
       },
       required: true,
     },
@@ -525,13 +623,17 @@ Return ONLY the JSON array.`,
         field: 'operation',
         value: [
           'posthog_create_insight',
+          'posthog_update_insight',
           'posthog_create_cohort',
+          'posthog_update_cohort',
           'posthog_create_annotation',
           'posthog_create_feature_flag',
           'posthog_update_feature_flag',
           'posthog_create_experiment',
+          'posthog_update_experiment',
           'posthog_create_survey',
           'posthog_update_survey',
+          'posthog_create_dashboard',
         ],
       },
     },
@@ -544,14 +646,18 @@ Return ONLY the JSON array.`,
         field: 'operation',
         value: [
           'posthog_create_insight',
+          'posthog_update_insight',
           'posthog_create_cohort',
+          'posthog_update_cohort',
           'posthog_create_feature_flag',
           'posthog_update_feature_flag',
           'posthog_create_experiment',
+          'posthog_update_experiment',
           'posthog_create_survey',
           'posthog_update_survey',
           'posthog_update_event_definition',
           'posthog_update_property_definition',
+          'posthog_create_dashboard',
         ],
       },
       wandConfig: {
@@ -602,11 +708,12 @@ Return ONLY the description text.`,
       condition: {
         field: 'operation',
         value: [
-          'posthog_create_insight',
           'posthog_create_feature_flag',
           'posthog_update_feature_flag',
           'posthog_create_cohort',
+          'posthog_update_cohort',
           'posthog_create_experiment',
+          'posthog_update_experiment',
         ],
       },
       wandConfig: {
@@ -648,21 +755,36 @@ Return ONLY the JSON object.`,
       title: 'Query (JSON)',
       type: 'long-input',
       placeholder: '{"kind": "HogQLQuery", "query": "SELECT ..."}',
-      condition: { field: 'operation', value: 'posthog_create_insight' },
+      condition: {
+        field: 'operation',
+        value: ['posthog_create_insight', 'posthog_update_insight'],
+      },
     },
     {
       id: 'dashboards',
       title: 'Dashboard IDs (comma-separated)',
       type: 'short-input',
       placeholder: '123, 456, 789',
-      condition: { field: 'operation', value: 'posthog_create_insight' },
+      condition: {
+        field: 'operation',
+        value: ['posthog_create_insight', 'posthog_update_insight'],
+      },
     },
     {
       id: 'insightTags',
       title: 'Tags (comma-separated)',
       type: 'short-input',
       placeholder: 'analytics, revenue, important',
-      condition: { field: 'operation', value: 'posthog_create_insight' },
+      condition: {
+        field: 'operation',
+        value: ['posthog_create_insight', 'posthog_update_insight'],
+      },
+    },
+    {
+      id: 'favorited',
+      title: 'Favorited',
+      type: 'switch',
+      condition: { field: 'operation', value: 'posthog_update_insight' },
     },
 
     // Feature Flag fields
@@ -703,14 +825,20 @@ Return ONLY the JSON object.`,
       title: 'Groups (JSON Array)',
       type: 'long-input',
       placeholder: '[{"properties": [...]}]',
-      condition: { field: 'operation', value: 'posthog_create_cohort' },
+      condition: { field: 'operation', value: ['posthog_create_cohort', 'posthog_update_cohort'] },
     },
     {
       id: 'isStatic',
       title: 'Static Cohort',
       type: 'switch',
       value: () => 'false',
-      condition: { field: 'operation', value: 'posthog_create_cohort' },
+      condition: { field: 'operation', value: ['posthog_create_cohort', 'posthog_update_cohort'] },
+    },
+    {
+      id: 'deleted',
+      title: 'Archive Cohort',
+      type: 'switch',
+      condition: { field: 'operation', value: 'posthog_update_cohort' },
     },
 
     // Annotation fields
@@ -789,21 +917,29 @@ Return ONLY the timestamp string - no explanations, no quotes, no extra text.`,
       title: 'Parameters (JSON)',
       type: 'long-input',
       placeholder: '{"minimum_detectable_effect": 5}',
-      condition: { field: 'operation', value: 'posthog_create_experiment' },
+      condition: {
+        field: 'operation',
+        value: ['posthog_create_experiment', 'posthog_update_experiment'],
+      },
     },
     {
-      id: 'variants',
-      title: 'Variants (JSON)',
-      type: 'long-input',
-      placeholder: '{"control": 50, "test": 50}',
-      condition: { field: 'operation', value: 'posthog_create_experiment' },
+      id: 'archived',
+      title: 'Archived',
+      type: 'switch',
+      condition: {
+        field: 'operation',
+        value: ['posthog_update_experiment', 'posthog_update_survey'],
+      },
     },
     {
       id: 'experimentStartDate',
       title: 'Start Date (ISO 8601)',
       type: 'short-input',
       placeholder: '2024-01-01T00:00:00Z',
-      condition: { field: 'operation', value: 'posthog_create_experiment' },
+      condition: {
+        field: 'operation',
+        value: ['posthog_create_experiment', 'posthog_update_experiment'],
+      },
       wandConfig: {
         enabled: true,
         prompt: `Generate an ISO 8601 timestamp based on the user's description.
@@ -823,7 +959,10 @@ Return ONLY the timestamp string - no explanations, no quotes, no extra text.`,
       title: 'End Date (ISO 8601)',
       type: 'short-input',
       placeholder: '2024-12-31T23:59:59Z',
-      condition: { field: 'operation', value: 'posthog_create_experiment' },
+      condition: {
+        field: 'operation',
+        value: ['posthog_create_experiment', 'posthog_update_experiment'],
+      },
       wandConfig: {
         enabled: true,
         prompt: `Generate an ISO 8601 timestamp based on the user's description.
@@ -1096,7 +1235,11 @@ Return ONLY the timestamp string - no explanations, no quotes, no extra text.`,
       placeholder: 'tag1, tag2, tag3',
       condition: {
         field: 'operation',
-        value: ['posthog_update_event_definition', 'posthog_update_property_definition'],
+        value: [
+          'posthog_update_event_definition',
+          'posthog_update_property_definition',
+          'posthog_create_dashboard',
+        ],
       },
     },
 
@@ -1146,12 +1289,15 @@ Return ONLY the timestamp string - no explanations, no quotes, no extra text.`,
       'posthog_list_insights',
       'posthog_get_insight',
       'posthog_create_insight',
+      'posthog_update_insight',
       'posthog_list_dashboards',
       'posthog_get_dashboard',
+      'posthog_create_dashboard',
       'posthog_list_actions',
       'posthog_list_cohorts',
       'posthog_get_cohort',
       'posthog_create_cohort',
+      'posthog_update_cohort',
       'posthog_list_annotations',
       'posthog_create_annotation',
       // Feature Management
@@ -1164,11 +1310,13 @@ Return ONLY the timestamp string - no explanations, no quotes, no extra text.`,
       'posthog_list_experiments',
       'posthog_get_experiment',
       'posthog_create_experiment',
+      'posthog_update_experiment',
       // Engagement
       'posthog_list_surveys',
       'posthog_get_survey',
       'posthog_create_survey',
       'posthog_update_survey',
+      'posthog_delete_survey',
       'posthog_list_session_recordings',
       'posthog_get_session_recording',
       'posthog_list_recording_playlists',
@@ -1222,11 +1370,19 @@ Return ONLY the timestamp string - no explanations, no quotes, no extra text.`,
           params.property_type = params.propertyType
         }
 
-        if (params.operation === 'posthog_create_insight' && params.insightQuery) {
+        if (
+          (params.operation === 'posthog_create_insight' ||
+            params.operation === 'posthog_update_insight') &&
+          params.insightQuery
+        ) {
           params.query = params.insightQuery
         }
 
-        if (params.operation === 'posthog_create_insight' && params.insightTags) {
+        if (
+          (params.operation === 'posthog_create_insight' ||
+            params.operation === 'posthog_update_insight') &&
+          params.insightTags
+        ) {
           params.tags = params.insightTags
         }
 
@@ -1234,7 +1390,10 @@ Return ONLY the timestamp string - no explanations, no quotes, no extra text.`,
           params.distinctId = params.distinctIdFilter
         }
 
-        if (params.operation === 'posthog_create_experiment') {
+        if (
+          params.operation === 'posthog_create_experiment' ||
+          params.operation === 'posthog_update_experiment'
+        ) {
           if (params.experimentStartDate) {
             params.startDate = params.experimentStartDate
           }
@@ -1272,6 +1431,7 @@ Return ONLY the timestamp string - no explanations, no quotes, no extra text.`,
   inputs: {
     operation: { type: 'string', description: 'Operation to perform' },
     region: { type: 'string', description: 'PostHog region (us or eu)' },
+    host: { type: 'string', description: 'Self-hosted PostHog instance host' },
     projectApiKey: { type: 'string', description: 'Project API key for public endpoints' },
     apiKey: { type: 'string', description: 'Personal API key for private endpoints' },
     projectId: { type: 'string', description: 'PostHog project ID' },
@@ -1304,13 +1464,22 @@ Return ONLY the timestamp string - no explanations, no quotes, no extra text.`,
     active: { type: 'boolean', description: 'Whether flag is active' },
     rolloutPercentage: { type: 'number', description: 'Rollout percentage (0-100)' },
     groups: { type: 'string', description: 'Cohort groups as JSON' },
+    isStatic: { type: 'boolean', description: 'Whether the cohort is static' },
+    deleted: { type: 'boolean', description: 'Whether to archive (soft-delete) the cohort' },
     content: { type: 'string', description: 'Annotation content' },
     dateMarker: { type: 'string', description: 'Annotation date' },
     scope: { type: 'string', description: 'Annotation scope' },
     featureFlagKey: { type: 'string', description: 'Feature flag key for experiment' },
     parameters: { type: 'string', description: 'Experiment parameters as JSON' },
+    archived: { type: 'boolean', description: 'Whether to archive the experiment or survey' },
     questions: { type: 'string', description: 'Survey questions as JSON array' },
     surveyType: { type: 'string', description: 'Survey type (popover or api)' },
+    insightQuery: { type: 'string', description: 'Insight query as JSON' },
+    dashboards: { type: 'string', description: 'Comma-separated dashboard IDs' },
+    insightTags: { type: 'string', description: 'Comma-separated insight tags' },
+    favorited: { type: 'boolean', description: 'Whether the insight is favorited' },
+    pinned: { type: 'boolean', description: 'Whether the dashboard is pinned' },
+    useTemplate: { type: 'string', description: 'Dashboard template name to seed from' },
     // List parameters
     limit: { type: 'number', description: 'Number of results to return' },
     offset: { type: 'number', description: 'Number of results to skip' },
diff --git a/apps/sim/tools/error-extractors.ts b/apps/sim/tools/error-extractors.ts
index 0bfc70c7c57..1f1590a9053 100644
--- a/apps/sim/tools/error-extractors.ts
+++ b/apps/sim/tools/error-extractors.ts
@@ -243,6 +243,17 @@ const ERROR_EXTRACTORS: ErrorExtractorConfig[] = [
       return undefined
     },
   },
+  {
+    id: 'posthog-errors',
+    description: 'PostHog API error format with type/code/detail/attr fields',
+    examples: ['PostHog API'],
+    extract: (errorInfo) => {
+      const detail = errorInfo?.data?.detail
+      if (typeof detail !== 'string' || !detail.trim()) return undefined
+      const attr = errorInfo?.data?.attr
+      return typeof attr === 'string' && attr ? `${detail} (${attr})` : detail
+    },
+  },
   {
     id: 'plain-text-data',
     description: 'Plain text error response',
@@ -320,6 +331,7 @@ export const ErrorExtractorId = {
   SOAP_FAULT: 'soap-fault',
   OAUTH_ERROR_DESCRIPTION: 'oauth-error-description',
   NESTED_ERROR_OBJECT: 'nested-error-object',
+  POSTHOG_ERRORS: 'posthog-errors',
   PLAIN_TEXT_DATA: 'plain-text-data',
   HTTP_STATUS_TEXT: 'http-status-text',
 } as const
diff --git a/apps/sim/tools/posthog/batch_events.ts b/apps/sim/tools/posthog/batch_events.ts
index 0eeea5d9b76..0e16fea5951 100644
--- a/apps/sim/tools/posthog/batch_events.ts
+++ b/apps/sim/tools/posthog/batch_events.ts
@@ -1,8 +1,11 @@
+import { getErrorMessage } from '@sim/utils/errors'
+import { getPostHogIngestBaseUrl } from '@/tools/posthog/utils'
 import type { ToolConfig } from '@/tools/types'
 
 export interface PostHogBatchEventsParams {
   projectApiKey: string
   region?: 'us' | 'eu'
+  host?: string
   batch: string
 }
 
@@ -35,6 +38,13 @@ export const batchEventsTool: ToolConfig<PostHogBatchEventsParams, PostHogBatchE
       description: 'PostHog region: us (default) or eu',
       default: 'us',
     },
+    host: {
+      type: 'string',
+      required: false,
+      visibility: 'user-only',
+      description:
+        'Self-hosted PostHog instance host (e.g., "posthog.mycompany.com"). Overrides the region setting when provided.',
+    },
     batch: {
       type: 'string',
       required: true,
@@ -46,8 +56,7 @@ export const batchEventsTool: ToolConfig<PostHogBatchEventsParams, PostHogBatchE
 
   request: {
     url: (params) => {
-      const baseUrl =
-        params.region === 'eu' ? 'https://eu.i.posthog.com' : 'https://us.i.posthog.com'
+      const baseUrl = getPostHogIngestBaseUrl(params.region, params.host)
       return `${baseUrl}/batch/`
     },
     method: 'POST',
@@ -55,40 +64,36 @@ export const batchEventsTool: ToolConfig<PostHogBatchEventsParams, PostHogBatchE
       'Content-Type': 'application/json',
     }),
     body: (params) => {
-      let batch: any[]
+      let batch: unknown
       try {
         batch = JSON.parse(params.batch)
-      } catch (e) {
-        batch = []
+      } catch (error) {
+        throw new Error(`Invalid batch JSON: ${getErrorMessage(error)}`)
+      }
+      if (!Array.isArray(batch)) {
+        throw new Error('batch must be a JSON array of events')
       }
 
       return {
         api_key: params.projectApiKey,
-        batch: batch,
+        batch,
       }
     },
   },
 
-  transformResponse: async (response: Response) => {
-    if (response.ok) {
-      const data = await response.json()
-      return {
-        success: true,
-        output: {
-          status: 'Batch events captured successfully',
-          events_processed: data.status === 1 ? JSON.parse(data.batch || '[]').length : 0,
-        },
-      }
-    }
+  transformResponse: async (response: Response, params) => {
+    const data = await response.json()
+    const eventsProcessed = params ? (JSON.parse(params.batch) as unknown[]).length : 0
+    const success = data.status === 1
 
-    const error = await response.text()
     return {
-      success: false,
+      success,
       output: {
-        status: 'Failed to capture batch events',
-        events_processed: 0,
+        status: success
+          ? 'Batch events captured successfully'
+          : `Batch events capture failed (status: ${data.status})`,
+        events_processed: success ? eventsProcessed : 0,
       },
-      error: error || 'Unknown error occurred',
     }
   },
 
diff --git a/apps/sim/tools/posthog/capture_event.ts b/apps/sim/tools/posthog/capture_event.ts
index aa0ad4c2a9d..154f89c5e41 100644
--- a/apps/sim/tools/posthog/capture_event.ts
+++ b/apps/sim/tools/posthog/capture_event.ts
@@ -1,8 +1,11 @@
+import { getErrorMessage } from '@sim/utils/errors'
+import { getPostHogIngestBaseUrl } from '@/tools/posthog/utils'
 import type { ToolConfig } from '@/tools/types'
 
 export interface PostHogCaptureEventParams {
   projectApiKey: string
   region?: 'us' | 'eu'
+  host?: string
   event: string
   distinctId: string
   properties?: string
@@ -38,6 +41,13 @@ export const captureEventTool: ToolConfig<PostHogCaptureEventParams, PostHogCapt
         description: 'PostHog region: us (default) or eu',
         default: 'us',
       },
+      host: {
+        type: 'string',
+        required: false,
+        visibility: 'user-only',
+        description:
+          'Self-hosted PostHog instance host (e.g., "posthog.mycompany.com"). Overrides the region setting when provided.',
+      },
       event: {
         type: 'string',
         required: true,
@@ -69,8 +79,7 @@ export const captureEventTool: ToolConfig<PostHogCaptureEventParams, PostHogCapt
 
     request: {
       url: (params) => {
-        const baseUrl =
-          params.region === 'eu' ? 'https://eu.i.posthog.com' : 'https://us.i.posthog.com'
+        const baseUrl = getPostHogIngestBaseUrl(params.region, params.host)
         return `${baseUrl}/capture/`
       },
       method: 'POST',
@@ -87,8 +96,8 @@ export const captureEventTool: ToolConfig<PostHogCaptureEventParams, PostHogCapt
         if (params.properties) {
           try {
             body.properties = JSON.parse(params.properties)
-          } catch (e) {
-            body.properties = {}
+          } catch (error) {
+            throw new Error(`Invalid properties JSON: ${getErrorMessage(error)}`)
           }
         }
 
@@ -101,22 +110,16 @@ export const captureEventTool: ToolConfig<PostHogCaptureEventParams, PostHogCapt
     },
 
     transformResponse: async (response: Response) => {
-      if (response.ok) {
-        return {
-          success: true,
-          output: {
-            status: 'Event captured successfully',
-          },
-        }
-      }
+      const data = await response.json()
+      const success = data.status === 1
 
-      const error = await response.text()
       return {
-        success: false,
+        success,
         output: {
-          status: 'Failed to capture event',
+          status: success
+            ? 'Event captured successfully'
+            : `Event capture failed (status: ${data.status})`,
         },
-        error: error || 'Unknown error occurred',
       }
     },
 
diff --git a/apps/sim/tools/posthog/create_annotation.ts b/apps/sim/tools/posthog/create_annotation.ts
index f60dc975a01..788cd4880de 100644
--- a/apps/sim/tools/posthog/create_annotation.ts
+++ b/apps/sim/tools/posthog/create_annotation.ts
@@ -1,14 +1,16 @@
+import { getPostHogAppBaseUrl } from '@/tools/posthog/utils'
 import type { ToolConfig } from '@/tools/types'
 
 interface PostHogCreateAnnotationParams {
   apiKey: string
   projectId: string
   region: string
+  host?: string
   content: string
   date_marker: string
   scope?: string
   dashboard_item?: string
-  insight_short_id?: string
+  dashboard_id?: string
 }
 
 interface PostHogCreateAnnotationResponse {
@@ -21,6 +23,7 @@ interface PostHogCreateAnnotationResponse {
     updated_at: string
     created_by: Record<string, any> | null
     dashboard_item: number | null
+    dashboard_id: number | null
     insight_short_id: string | null
     insight_name: string | null
     scope: string
@@ -37,6 +40,7 @@ export const createAnnotationTool: ToolConfig<
   description:
     'Create a new annotation in PostHog. Mark important events on your graphs with date and description.',
   version: '1.0.0',
+  errorExtractor: 'posthog-errors',
 
   params: {
     apiKey: {
@@ -58,6 +62,13 @@ export const createAnnotationTool: ToolConfig<
       description: 'PostHog cloud region: "us" or "eu" (default: "us")',
       default: 'us',
     },
+    host: {
+      type: 'string',
+      required: false,
+      visibility: 'user-only',
+      description:
+        'Self-hosted PostHog instance host (e.g., "posthog.mycompany.com"). Overrides the region setting when provided.',
+    },
     content: {
       type: 'string',
       required: true,
@@ -75,25 +86,28 @@ export const createAnnotationTool: ToolConfig<
       type: 'string',
       required: false,
       visibility: 'user-or-llm',
-      description: 'Scope of the annotation: "project" or "dashboard_item" (default: "project")',
+      description:
+        'Scope of the annotation: "project", "organization", "dashboard", or "dashboard_item" (default: "project")',
     },
     dashboard_item: {
       type: 'string',
       required: false,
       visibility: 'user-or-llm',
-      description: 'ID of dashboard item to attach this annotation to',
+      description:
+        'ID of the dashboard tile (insight) to attach this annotation to (used when scope is "dashboard_item")',
     },
-    insight_short_id: {
+    dashboard_id: {
       type: 'string',
       required: false,
       visibility: 'user-or-llm',
-      description: 'Short ID of the insight to attach this annotation to',
+      description:
+        'ID of the dashboard to attach this annotation to (used when scope is "dashboard")',
     },
   },
 
   request: {
     url: (params) => {
-      const baseUrl = params.region === 'eu' ? 'https://eu.posthog.com' : 'https://us.posthog.com'
+      const baseUrl = getPostHogAppBaseUrl(params.region as 'us' | 'eu' | undefined, params.host)
       return `${baseUrl}/api/projects/${params.projectId}/annotations/`
     },
     method: 'POST',
@@ -115,8 +129,8 @@ export const createAnnotationTool: ToolConfig<
         body.dashboard_item = Number(params.dashboard_item)
       }
 
-      if (params.insight_short_id) {
-        body.insight_short_id = params.insight_short_id
+      if (params.dashboard_id) {
+        body.dashboard_id = Number(params.dashboard_id)
       }
 
       return body
@@ -136,6 +150,7 @@ export const createAnnotationTool: ToolConfig<
         updated_at: data.updated_at,
         created_by: data.created_by || null,
         dashboard_item: data.dashboard_item || null,
+        dashboard_id: data.dashboard_id || null,
         insight_short_id: data.insight_short_id || null,
         insight_name: data.insight_name || null,
         scope: data.scope || '',
@@ -175,6 +190,11 @@ export const createAnnotationTool: ToolConfig<
       description: 'ID of dashboard item this annotation is attached to',
       optional: true,
     },
+    dashboard_id: {
+      type: 'number',
+      description: 'ID of the dashboard this annotation is attached to',
+      optional: true,
+    },
     insight_short_id: {
       type: 'string',
       description: 'Short ID of the insight this annotation is attached to',
@@ -187,7 +207,7 @@ export const createAnnotationTool: ToolConfig<
     },
     scope: {
       type: 'string',
-      description: 'Scope of the annotation (project or dashboard_item)',
+      description: 'Scope of the annotation (project, organization, dashboard, or dashboard_item)',
     },
     deleted: {
       type: 'boolean',
diff --git a/apps/sim/tools/posthog/create_cohort.ts b/apps/sim/tools/posthog/create_cohort.ts
index 71cc283e808..25ebdf8fc05 100644
--- a/apps/sim/tools/posthog/create_cohort.ts
+++ b/apps/sim/tools/posthog/create_cohort.ts
@@ -1,9 +1,11 @@
+import { getPostHogAppBaseUrl } from '@/tools/posthog/utils'
 import type { ToolConfig } from '@/tools/types'
 
 interface PostHogCreateCohortParams {
   apiKey: string
   projectId: string
   region: string
+  host?: string
   name: string
   description?: string
   filters?: string
@@ -38,6 +40,7 @@ export const createCohortTool: ToolConfig<PostHogCreateCohortParams, PostHogCrea
     description:
       'Create a new cohort in PostHog. Requires cohort name and filter or query configuration.',
     version: '1.0.0',
+    errorExtractor: 'posthog-errors',
 
     params: {
       apiKey: {
@@ -59,6 +62,13 @@ export const createCohortTool: ToolConfig<PostHogCreateCohortParams, PostHogCrea
         description: 'PostHog cloud region: "us" or "eu" (default: "us")',
         default: 'us',
       },
+      host: {
+        type: 'string',
+        required: false,
+        visibility: 'user-only',
+        description:
+          'Self-hosted PostHog instance host (e.g., "posthog.mycompany.com"). Overrides the region setting when provided.',
+      },
       name: {
         type: 'string',
         required: false,
@@ -101,7 +111,7 @@ export const createCohortTool: ToolConfig<PostHogCreateCohortParams, PostHogCrea
 
     request: {
       url: (params) => {
-        const baseUrl = params.region === 'eu' ? 'https://eu.posthog.com' : 'https://us.posthog.com'
+        const baseUrl = getPostHogAppBaseUrl(params.region as 'us' | 'eu' | undefined, params.host)
         return `${baseUrl}/api/projects/${params.projectId}/cohorts/`
       },
       method: 'POST',
diff --git a/apps/sim/tools/posthog/create_dashboard.ts b/apps/sim/tools/posthog/create_dashboard.ts
new file mode 100644
index 00000000000..4cfa617fd63
--- /dev/null
+++ b/apps/sim/tools/posthog/create_dashboard.ts
@@ -0,0 +1,183 @@
+import { getPostHogAppBaseUrl } from '@/tools/posthog/utils'
+import type { ToolConfig } from '@/tools/types'
+
+interface PostHogCreateDashboardParams {
+  apiKey: string
+  projectId: string
+  region?: 'us' | 'eu'
+  host?: string
+  name: string
+  description?: string
+  pinned?: boolean
+  tags?: string
+  useTemplate?: string
+}
+
+interface PostHogCreateDashboardResponse {
+  success: boolean
+  output: {
+    id: number
+    name: string
+    description: string
+    pinned: boolean
+    created_at: string
+    tiles: Array<Record<string, any>>
+    filters: Record<string, any>
+    tags: string[]
+  }
+}
+
+export const createDashboardTool: ToolConfig<
+  PostHogCreateDashboardParams,
+  PostHogCreateDashboardResponse
+> = {
+  id: 'posthog_create_dashboard',
+  name: 'PostHog Create Dashboard',
+  description:
+    'Create a new dashboard in PostHog. Optionally seed it from a built-in template, then attach insights to it afterward.',
+  version: '1.0.0',
+  errorExtractor: 'posthog-errors',
+
+  params: {
+    apiKey: {
+      type: 'string',
+      required: true,
+      visibility: 'user-only',
+      description: 'PostHog Personal API Key',
+    },
+    projectId: {
+      type: 'string',
+      required: true,
+      visibility: 'user-or-llm',
+      description: 'The PostHog project ID (e.g., "12345" or project UUID)',
+    },
+    region: {
+      type: 'string',
+      required: false,
+      visibility: 'user-only',
+      description: 'PostHog cloud region: "us" or "eu" (default: "us")',
+      default: 'us',
+    },
+    host: {
+      type: 'string',
+      required: false,
+      visibility: 'user-only',
+      description:
+        'Self-hosted PostHog instance host (e.g., "posthog.mycompany.com"). Overrides the region setting when provided.',
+    },
+    name: {
+      type: 'string',
+      required: true,
+      visibility: 'user-or-llm',
+      description: 'Name for the new dashboard',
+    },
+    description: {
+      type: 'string',
+      required: false,
+      visibility: 'user-or-llm',
+      description: 'Description of the dashboard',
+    },
+    pinned: {
+      type: 'boolean',
+      required: false,
+      visibility: 'user-or-llm',
+      description: 'Whether to pin the dashboard to the sidebar',
+    },
+    tags: {
+      type: 'string',
+      required: false,
+      visibility: 'user-or-llm',
+      description: 'Comma-separated list of tags for the dashboard',
+    },
+    useTemplate: {
+      type: 'string',
+      required: false,
+      visibility: 'user-or-llm',
+      description:
+        'Name of a built-in PostHog dashboard template to seed this dashboard from (e.g., "Product analytics")',
+    },
+  },
+
+  request: {
+    url: (params) => {
+      const baseUrl = getPostHogAppBaseUrl(params.region, params.host)
+      return `${baseUrl}/api/projects/${params.projectId}/dashboards/`
+    },
+    method: 'POST',
+    headers: (params) => ({
+      'Content-Type': 'application/json',
+      Authorization: `Bearer ${params.apiKey}`,
+    }),
+    body: (params) => {
+      const body: Record<string, any> = {
+        name: params.name,
+      }
+
+      if (params.description) body.description = params.description
+      if (params.pinned !== undefined) body.pinned = params.pinned
+      if (params.useTemplate) body.use_template = params.useTemplate
+
+      if (params.tags) {
+        body.tags = params.tags
+          .split(',')
+          .map((tag: string) => tag.trim())
+          .filter((tag: string) => tag.length > 0)
+      }
+
+      return body
+    },
+  },
+
+  transformResponse: async (response: Response) => {
+    const data = await response.json()
+
+    return {
+      success: true,
+      output: {
+        id: data.id,
+        name: data.name || '',
+        description: data.description || '',
+        pinned: data.pinned || false,
+        created_at: data.created_at,
+        tiles: data.tiles || [],
+        filters: data.filters || {},
+        tags: data.tags || [],
+      },
+    }
+  },
+
+  outputs: {
+    id: {
+      type: 'number',
+      description: 'Unique identifier for the created dashboard',
+    },
+    name: {
+      type: 'string',
+      description: 'Name of the dashboard',
+    },
+    description: {
+      type: 'string',
+      description: 'Description of the dashboard',
+    },
+    pinned: {
+      type: 'boolean',
+      description: 'Whether the dashboard is pinned',
+    },
+    created_at: {
+      type: 'string',
+      description: 'ISO timestamp when dashboard was created',
+    },
+    tiles: {
+      type: 'array',
+      description: 'Tiles/widgets on the dashboard',
+    },
+    filters: {
+      type: 'object',
+      description: 'Global filters applied to the dashboard',
+    },
+    tags: {
+      type: 'array',
+      description: 'Tags associated with the dashboard',
+    },
+  },
+}
diff --git a/apps/sim/tools/posthog/create_experiment.ts b/apps/sim/tools/posthog/create_experiment.ts
index 2c9ef15ca55..49cc494d39d 100644
--- a/apps/sim/tools/posthog/create_experiment.ts
+++ b/apps/sim/tools/posthog/create_experiment.ts
@@ -1,15 +1,17 @@
+import { getErrorMessage } from '@sim/utils/errors'
+import { getPostHogAppBaseUrl } from '@/tools/posthog/utils'
 import type { ToolConfig } from '@/tools/types'
 
 interface CreateExperimentParams {
   projectId: string
   region: 'us' | 'eu'
+  host?: string
   apiKey: string
   name: string
   description?: string
   featureFlagKey: string
   parameters?: string
   filters?: string
-  variants?: string
   startDate?: string
   endDate?: string
 }
@@ -22,7 +24,6 @@ interface Experiment {
   feature_flag: Record<string, any>
   parameters: Record<string, any>
   filters: Record<string, any>
-  variants: Record<string, any>
   start_date: string | null
   end_date: string | null
   created_at: string
@@ -39,6 +40,7 @@ export const createExperimentTool: ToolConfig<CreateExperimentParams, CreateExpe
   name: 'PostHog Create Experiment',
   description: 'Create a new experiment in PostHog',
   version: '1.0.0',
+  errorExtractor: 'posthog-errors',
 
   params: {
     projectId: {
@@ -53,6 +55,13 @@ export const createExperimentTool: ToolConfig<CreateExperimentParams, CreateExpe
       visibility: 'user-only',
       description: 'PostHog cloud region: us or eu',
     },
+    host: {
+      type: 'string',
+      required: false,
+      visibility: 'user-only',
+      description:
+        'Self-hosted PostHog instance host (e.g., "posthog.mycompany.com"). Overrides the region setting when provided.',
+    },
     apiKey: {
       type: 'string',
       required: true,
@@ -61,9 +70,9 @@ export const createExperimentTool: ToolConfig<CreateExperimentParams, CreateExpe
     },
     name: {
       type: 'string',
-      required: false,
+      required: true,
       visibility: 'user-or-llm',
-      description: 'Experiment name (optional)',
+      description: 'Experiment name',
     },
     description: {
       type: 'string',
@@ -89,12 +98,6 @@ export const createExperimentTool: ToolConfig<CreateExperimentParams, CreateExpe
       visibility: 'user-or-llm',
       description: 'Experiment filters as JSON string',
     },
-    variants: {
-      type: 'string',
-      required: false,
-      visibility: 'user-or-llm',
-      description: 'Experiment variants as JSON string',
-    },
     startDate: {
       type: 'string',
       required: false,
@@ -111,7 +114,7 @@ export const createExperimentTool: ToolConfig<CreateExperimentParams, CreateExpe
 
   request: {
     url: (params) => {
-      const baseUrl = params.region === 'eu' ? 'https://eu.posthog.com' : 'https://us.posthog.com'
+      const baseUrl = getPostHogAppBaseUrl(params.region, params.host)
       return `${baseUrl}/api/projects/${params.projectId}/experiments/`
     },
     method: 'POST',
@@ -132,24 +135,16 @@ export const createExperimentTool: ToolConfig<CreateExperimentParams, CreateExpe
       if (params.parameters) {
         try {
           body.parameters = JSON.parse(params.parameters)
-        } catch {
-          body.parameters = {}
+        } catch (error) {
+          throw new Error(`Invalid parameters JSON: ${getErrorMessage(error)}`)
         }
       }
 
       if (params.filters) {
         try {
           body.filters = JSON.parse(params.filters)
-        } catch {
-          body.filters = {}
-        }
-      }
-
-      if (params.variants) {
-        try {
-          body.variants = JSON.parse(params.variants)
-        } catch {
-          body.variants = {}
+        } catch (error) {
+          throw new Error(`Invalid filters JSON: ${getErrorMessage(error)}`)
         }
       }
 
@@ -185,7 +180,6 @@ export const createExperimentTool: ToolConfig<CreateExperimentParams, CreateExpe
         feature_flag: { type: 'object', description: 'Feature flag details' },
         parameters: { type: 'object', description: 'Experiment parameters' },
         filters: { type: 'object', description: 'Experiment filters' },
-        variants: { type: 'object', description: 'Experiment variants' },
         start_date: { type: 'string', description: 'Start date' },
         end_date: { type: 'string', description: 'End date' },
         created_at: { type: 'string', description: 'Creation timestamp' },
diff --git a/apps/sim/tools/posthog/create_feature_flag.ts b/apps/sim/tools/posthog/create_feature_flag.ts
index 71e95781b31..6c22c187d51 100644
--- a/apps/sim/tools/posthog/create_feature_flag.ts
+++ b/apps/sim/tools/posthog/create_feature_flag.ts
@@ -1,8 +1,11 @@
+import { getErrorMessage } from '@sim/utils/errors'
+import { getPostHogAppBaseUrl } from '@/tools/posthog/utils'
 import type { ToolConfig } from '@/tools/types'
 
 interface CreateFeatureFlagParams {
   projectId: string
   region: 'us' | 'eu'
+  host?: string
   apiKey: string
   name: string
   key: string
@@ -36,6 +39,7 @@ export const createFeatureFlagTool: ToolConfig<CreateFeatureFlagParams, CreateFe
     name: 'PostHog Create Feature Flag',
     description: 'Create a new feature flag in PostHog',
     version: '1.0.0',
+    errorExtractor: 'posthog-errors',
 
     params: {
       projectId: {
@@ -50,6 +54,13 @@ export const createFeatureFlagTool: ToolConfig<CreateFeatureFlagParams, CreateFe
         visibility: 'user-only',
         description: 'PostHog cloud region: us or eu',
       },
+      host: {
+        type: 'string',
+        required: false,
+        visibility: 'user-only',
+        description:
+          'Self-hosted PostHog instance host (e.g., "posthog.mycompany.com"). Overrides the region setting when provided.',
+      },
       apiKey: {
         type: 'string',
         required: true,
@@ -98,7 +109,7 @@ export const createFeatureFlagTool: ToolConfig<CreateFeatureFlagParams, CreateFe
 
     request: {
       url: (params) => {
-        const baseUrl = params.region === 'eu' ? 'https://eu.posthog.com' : 'https://us.posthog.com'
+        const baseUrl = getPostHogAppBaseUrl(params.region, params.host)
         return `${baseUrl}/api/projects/${params.projectId}/feature_flags/`
       },
       method: 'POST',
@@ -115,8 +126,8 @@ export const createFeatureFlagTool: ToolConfig<CreateFeatureFlagParams, CreateFe
         if (params.filters) {
           try {
             body.filters = JSON.parse(params.filters)
-          } catch {
-            body.filters = {}
+          } catch (error) {
+            throw new Error(`Invalid filters JSON: ${getErrorMessage(error)}`)
           }
         }
 
diff --git a/apps/sim/tools/posthog/create_insight.ts b/apps/sim/tools/posthog/create_insight.ts
index 023ba8abe13..f959ad324fe 100644
--- a/apps/sim/tools/posthog/create_insight.ts
+++ b/apps/sim/tools/posthog/create_insight.ts
@@ -1,12 +1,13 @@
+import { getPostHogAppBaseUrl } from '@/tools/posthog/utils'
 import type { ToolConfig } from '@/tools/types'
 
 interface PostHogCreateInsightParams {
   apiKey: string
   projectId: string
   region: string
+  host?: string
   name: string
   description?: string
-  filters?: string
   query?: string
   dashboards?: string
   tags?: string
@@ -18,12 +19,10 @@ interface PostHogCreateInsightResponse {
     id: number
     name: string
     description: string
-    filters: Record<string, any>
     query: Record<string, any> | null
     created_at: string
     created_by: Record<string, any> | null
     last_modified_at: string
-    saved: boolean
     dashboards: number[]
     tags: string[]
   }
@@ -35,9 +34,9 @@ export const createInsightTool: ToolConfig<
 > = {
   id: 'posthog_create_insight',
   name: 'PostHog Create Insight',
-  description:
-    'Create a new insight in PostHog. Requires insight name and configuration filters or query.',
+  description: 'Create a new insight in PostHog. Requires insight name and a query configuration.',
   version: '1.0.0',
+  errorExtractor: 'posthog-errors',
 
   params: {
     apiKey: {
@@ -59,6 +58,13 @@ export const createInsightTool: ToolConfig<
       description: 'PostHog cloud region: "us" or "eu" (default: "us")',
       default: 'us',
     },
+    host: {
+      type: 'string',
+      required: false,
+      visibility: 'user-only',
+      description:
+        'Self-hosted PostHog instance host (e.g., "posthog.mycompany.com"). Overrides the region setting when provided.',
+    },
     name: {
       type: 'string',
       required: false,
@@ -72,12 +78,6 @@ export const createInsightTool: ToolConfig<
       visibility: 'user-or-llm',
       description: 'Description of the insight',
     },
-    filters: {
-      type: 'string',
-      required: false,
-      visibility: 'user-or-llm',
-      description: 'JSON string of filter configuration for the insight',
-    },
     query: {
       type: 'string',
       required: false,
@@ -100,7 +100,7 @@ export const createInsightTool: ToolConfig<
 
   request: {
     url: (params) => {
-      const baseUrl = params.region === 'eu' ? 'https://eu.posthog.com' : 'https://us.posthog.com'
+      const baseUrl = getPostHogAppBaseUrl(params.region as 'us' | 'eu' | undefined, params.host)
       return `${baseUrl}/api/projects/${params.projectId}/insights/`
     },
     method: 'POST',
@@ -117,14 +117,6 @@ export const createInsightTool: ToolConfig<
         body.description = params.description
       }
 
-      if (params.filters) {
-        try {
-          body.filters = JSON.parse(params.filters)
-        } catch (e) {
-          body.filters = {}
-        }
-      }
-
       if (params.query) {
         try {
           body.query = JSON.parse(params.query)
@@ -160,12 +152,10 @@ export const createInsightTool: ToolConfig<
         id: data.id,
         name: data.name || '',
         description: data.description || '',
-        filters: data.filters || {},
         query: data.query || null,
         created_at: data.created_at,
         created_by: data.created_by || null,
         last_modified_at: data.last_modified_at,
-        saved: data.saved || false,
         dashboards: data.dashboards || [],
         tags: data.tags || [],
       },
@@ -185,10 +175,6 @@ export const createInsightTool: ToolConfig<
       type: 'string',
       description: 'Description of the insight',
     },
-    filters: {
-      type: 'object',
-      description: 'Filter configuration for the insight',
-    },
     query: {
       type: 'object',
       description: 'Query configuration for the insight',
@@ -207,10 +193,6 @@ export const createInsightTool: ToolConfig<
       type: 'string',
       description: 'ISO timestamp when insight was last modified',
     },
-    saved: {
-      type: 'boolean',
-      description: 'Whether the insight is saved',
-    },
     dashboards: {
       type: 'array',
       description: 'IDs of dashboards this insight appears on',
diff --git a/apps/sim/tools/posthog/create_survey.ts b/apps/sim/tools/posthog/create_survey.ts
index f5155df2807..13fdc1568f8 100644
--- a/apps/sim/tools/posthog/create_survey.ts
+++ b/apps/sim/tools/posthog/create_survey.ts
@@ -1,3 +1,4 @@
+import { getPostHogAppBaseUrl } from '@/tools/posthog/utils'
 import type { ToolConfig } from '@/tools/types'
 
 interface PostHogSurveyQuestion {
@@ -15,6 +16,7 @@ interface PostHogCreateSurveyParams {
   apiKey: string
   projectId: string
   region?: 'us' | 'eu'
+  host?: string
   name: string
   description?: string
   type?: 'popover' | 'api'
@@ -60,6 +62,7 @@ export const createSurveyTool: ToolConfig<PostHogCreateSurveyParams, PostHogCrea
     description:
       'Create a new survey in PostHog. Supports question types: Basic (open), Link, Rating, and Multiple Choice.',
     version: '1.0.0',
+    errorExtractor: 'posthog-errors',
 
     params: {
       apiKey: {
@@ -81,11 +84,18 @@ export const createSurveyTool: ToolConfig<PostHogCreateSurveyParams, PostHogCrea
         description: 'PostHog cloud region: us or eu (default: us)',
         default: 'us',
       },
-      name: {
+      host: {
         type: 'string',
         required: false,
+        visibility: 'user-only',
+        description:
+          'Self-hosted PostHog instance host (e.g., "posthog.mycompany.com"). Overrides the region setting when provided.',
+      },
+      name: {
+        type: 'string',
+        required: true,
         visibility: 'user-or-llm',
-        description: 'Survey name (optional)',
+        description: 'Survey name',
       },
       description: {
         type: 'string',
@@ -154,7 +164,7 @@ export const createSurveyTool: ToolConfig<PostHogCreateSurveyParams, PostHogCrea
 
     request: {
       url: (params) => {
-        const baseUrl = params.region === 'eu' ? 'https://eu.posthog.com' : 'https://us.posthog.com'
+        const baseUrl = getPostHogAppBaseUrl(params.region, params.host)
         return `${baseUrl}/api/projects/${params.projectId}/surveys/`
       },
       method: 'POST',
diff --git a/apps/sim/tools/posthog/delete_feature_flag.ts b/apps/sim/tools/posthog/delete_feature_flag.ts
index 9e2df9110a2..8b33a90bf23 100644
--- a/apps/sim/tools/posthog/delete_feature_flag.ts
+++ b/apps/sim/tools/posthog/delete_feature_flag.ts
@@ -1,9 +1,11 @@
+import { getPostHogAppBaseUrl } from '@/tools/posthog/utils'
 import type { ToolConfig } from '@/tools/types'
 
 interface DeleteFeatureFlagParams {
   projectId: string
   flagId: string
   region: 'us' | 'eu'
+  host?: string
   apiKey: string
 }
 
@@ -18,6 +20,7 @@ export const deleteFeatureFlagTool: ToolConfig<DeleteFeatureFlagParams, DeleteFe
     name: 'PostHog Delete Feature Flag',
     description: 'Delete a feature flag from PostHog',
     version: '1.0.0',
+    errorExtractor: 'posthog-errors',
 
     params: {
       projectId: {
@@ -38,6 +41,13 @@ export const deleteFeatureFlagTool: ToolConfig<DeleteFeatureFlagParams, DeleteFe
         visibility: 'user-only',
         description: 'PostHog cloud region: us or eu',
       },
+      host: {
+        type: 'string',
+        required: false,
+        visibility: 'user-only',
+        description:
+          'Self-hosted PostHog instance host (e.g., "posthog.mycompany.com"). Overrides the region setting when provided.',
+      },
       apiKey: {
         type: 'string',
         required: true,
@@ -48,17 +58,20 @@ export const deleteFeatureFlagTool: ToolConfig<DeleteFeatureFlagParams, DeleteFe
 
     request: {
       url: (params) => {
-        const baseUrl = params.region === 'eu' ? 'https://eu.posthog.com' : 'https://us.posthog.com'
-        return `${baseUrl}/api/projects/${params.projectId}/feature_flags/${params.flagId}`
+        const baseUrl = getPostHogAppBaseUrl(params.region, params.host)
+        return `${baseUrl}/api/projects/${params.projectId}/feature_flags/${params.flagId}/`
       },
-      method: 'DELETE',
+      // PostHog does not allow a hard DELETE on feature flags (always returns 405).
+      // Deletion is a soft-delete via PATCH with deleted: true.
+      method: 'PATCH',
       headers: (params) => ({
         Authorization: `Bearer ${params.apiKey}`,
         'Content-Type': 'application/json',
       }),
+      body: () => ({ deleted: true }),
     },
 
-    transformResponse: async (response: Response) => {
+    transformResponse: async () => {
       return {
         success: true,
         message: 'Feature flag deleted successfully',
diff --git a/apps/sim/tools/posthog/delete_person.ts b/apps/sim/tools/posthog/delete_person.ts
index ccfce302282..262b9954f75 100644
--- a/apps/sim/tools/posthog/delete_person.ts
+++ b/apps/sim/tools/posthog/delete_person.ts
@@ -1,8 +1,10 @@
+import { getPostHogAppBaseUrl } from '@/tools/posthog/utils'
 import type { ToolConfig } from '@/tools/types'
 
 export interface PostHogDeletePersonParams {
   apiKey: string
   region?: 'us' | 'eu'
+  host?: string
   projectId: string
   personId: string
 }
@@ -21,6 +23,7 @@ export const deletePersonTool: ToolConfig<PostHogDeletePersonParams, PostHogDele
     description:
       'Delete a person from PostHog. This will remove all associated events and data. Use with caution.',
     version: '1.0.0',
+    errorExtractor: 'posthog-errors',
 
     params: {
       apiKey: {
@@ -36,6 +39,13 @@ export const deletePersonTool: ToolConfig<PostHogDeletePersonParams, PostHogDele
         description: 'PostHog region: us (default) or eu',
         default: 'us',
       },
+      host: {
+        type: 'string',
+        required: false,
+        visibility: 'user-only',
+        description:
+          'Self-hosted PostHog instance host (e.g., "posthog.mycompany.com"). Overrides the region setting when provided.',
+      },
       projectId: {
         type: 'string',
         required: true,
@@ -51,34 +61,28 @@ export const deletePersonTool: ToolConfig<PostHogDeletePersonParams, PostHogDele
     },
 
     request: {
+      // PostHog has no single-person DELETE endpoint; deletion is only available
+      // via the bulk_delete endpoint, called here with a single ID.
       url: (params) => {
-        const baseUrl = params.region === 'eu' ? 'https://eu.posthog.com' : 'https://us.posthog.com'
-        return `${baseUrl}/api/projects/${params.projectId}/persons/${params.personId}/`
+        const baseUrl = getPostHogAppBaseUrl(params.region, params.host)
+        return `${baseUrl}/api/projects/${params.projectId}/persons/bulk_delete/`
       },
-      method: 'DELETE',
+      method: 'POST',
       headers: (params) => ({
         Authorization: `Bearer ${params.apiKey}`,
         'Content-Type': 'application/json',
       }),
+      body: (params) => ({ ids: [params.personId] }),
     },
 
     transformResponse: async (response: Response) => {
-      if (response.ok || response.status === 204) {
-        return {
-          success: true,
-          output: {
-            status: 'Person deleted successfully',
-          },
-        }
-      }
-
-      const error = await response.text()
+      const data = await response.json()
+      const success = data.persons_deleted > 0
       return {
-        success: false,
+        success,
         output: {
-          status: 'Failed to delete person',
+          status: success ? 'Person deleted successfully' : 'No matching person found to delete',
         },
-        error: error || 'Unknown error occurred',
       }
     },
 
diff --git a/apps/sim/tools/posthog/delete_survey.ts b/apps/sim/tools/posthog/delete_survey.ts
new file mode 100644
index 00000000000..293f22035d7
--- /dev/null
+++ b/apps/sim/tools/posthog/delete_survey.ts
@@ -0,0 +1,89 @@
+import { getPostHogAppBaseUrl } from '@/tools/posthog/utils'
+import type { ToolConfig } from '@/tools/types'
+
+interface PostHogDeleteSurveyParams {
+  apiKey: string
+  projectId: string
+  surveyId: string
+  region?: 'us' | 'eu'
+  host?: string
+}
+
+interface PostHogDeleteSurveyResponse {
+  success: boolean
+  output: {
+    status: string
+  }
+}
+
+export const deleteSurveyTool: ToolConfig<PostHogDeleteSurveyParams, PostHogDeleteSurveyResponse> =
+  {
+    id: 'posthog_delete_survey',
+    name: 'PostHog Delete Survey',
+    description: 'Delete a survey from PostHog. Use this to remove expired or unused surveys.',
+    version: '1.0.0',
+    errorExtractor: 'posthog-errors',
+
+    params: {
+      apiKey: {
+        type: 'string',
+        required: true,
+        visibility: 'user-only',
+        description: 'PostHog Personal API Key',
+      },
+      projectId: {
+        type: 'string',
+        required: true,
+        visibility: 'user-or-llm',
+        description: 'PostHog Project ID (e.g., "12345" or project UUID)',
+      },
+      surveyId: {
+        type: 'string',
+        required: true,
+        visibility: 'user-or-llm',
+        description: 'Survey ID to delete (e.g., "01234567-89ab-cdef-0123-456789abcdef")',
+      },
+      region: {
+        type: 'string',
+        required: false,
+        visibility: 'user-only',
+        description: 'PostHog cloud region: us or eu (default: us)',
+        default: 'us',
+      },
+      host: {
+        type: 'string',
+        required: false,
+        visibility: 'user-only',
+        description:
+          'Self-hosted PostHog instance host (e.g., "posthog.mycompany.com"). Overrides the region setting when provided.',
+      },
+    },
+
+    request: {
+      url: (params) => {
+        const baseUrl = getPostHogAppBaseUrl(params.region, params.host)
+        return `${baseUrl}/api/projects/${params.projectId}/surveys/${params.surveyId}/`
+      },
+      method: 'DELETE',
+      headers: (params) => ({
+        'Content-Type': 'application/json',
+        Authorization: `Bearer ${params.apiKey}`,
+      }),
+    },
+
+    transformResponse: async () => {
+      return {
+        success: true,
+        output: {
+          status: 'Survey deleted successfully',
+        },
+      }
+    },
+
+    outputs: {
+      status: {
+        type: 'string',
+        description: 'Status message indicating whether the survey was deleted successfully',
+      },
+    },
+  }
diff --git a/apps/sim/tools/posthog/evaluate_flags.ts b/apps/sim/tools/posthog/evaluate_flags.ts
index ae157cc2821..ca8235ad0cc 100644
--- a/apps/sim/tools/posthog/evaluate_flags.ts
+++ b/apps/sim/tools/posthog/evaluate_flags.ts
@@ -1,7 +1,10 @@
+import { getErrorMessage } from '@sim/utils/errors'
+import { getPostHogIngestBaseUrl } from '@/tools/posthog/utils'
 import type { ToolConfig } from '@/tools/types'
 
 interface EvaluateFlagsParams {
   region: 'us' | 'eu'
+  host?: string
   projectApiKey: string
   distinctId: string
   groups?: string
@@ -33,6 +36,13 @@ export const evaluateFlagsTool: ToolConfig<EvaluateFlagsParams, EvaluateFlagsRes
       visibility: 'user-only',
       description: 'PostHog cloud region: us or eu',
     },
+    host: {
+      type: 'string',
+      required: false,
+      visibility: 'user-only',
+      description:
+        'Self-hosted PostHog instance host (e.g., "posthog.mycompany.com"). Overrides the region setting when provided.',
+    },
     projectApiKey: {
       type: 'string',
       required: true,
@@ -67,41 +77,40 @@ export const evaluateFlagsTool: ToolConfig<EvaluateFlagsParams, EvaluateFlagsRes
 
   request: {
     url: (params) => {
-      const baseUrl =
-        params.region === 'eu' ? 'https://eu.i.posthog.com' : 'https://us.i.posthog.com'
-      return `${baseUrl}/decide?v=3`
+      const baseUrl = getPostHogIngestBaseUrl(params.region, params.host)
+      return `${baseUrl}/flags/?v=2`
     },
     method: 'POST',
-    headers: (params) => ({
-      Authorization: `Bearer ${params.projectApiKey}`,
+    headers: () => ({
       'Content-Type': 'application/json',
     }),
     body: (params) => {
       const body: Record<string, any> = {
+        api_key: params.projectApiKey,
         distinct_id: params.distinctId,
       }
 
       if (params.groups) {
         try {
           body.groups = JSON.parse(params.groups)
-        } catch {
-          body.groups = {}
+        } catch (error) {
+          throw new Error(`Invalid groups JSON: ${getErrorMessage(error)}`)
         }
       }
 
       if (params.personProperties) {
         try {
           body.person_properties = JSON.parse(params.personProperties)
-        } catch {
-          body.person_properties = {}
+        } catch (error) {
+          throw new Error(`Invalid personProperties JSON: ${getErrorMessage(error)}`)
         }
       }
 
       if (params.groupProperties) {
         try {
           body.group_properties = JSON.parse(params.groupProperties)
-        } catch {
-          body.group_properties = {}
+        } catch (error) {
+          throw new Error(`Invalid groupProperties JSON: ${getErrorMessage(error)}`)
         }
       }
 
@@ -111,10 +120,28 @@ export const evaluateFlagsTool: ToolConfig<EvaluateFlagsParams, EvaluateFlagsRes
 
   transformResponse: async (response: Response) => {
     const data = await response.json()
+    const flags: Record<
+      string,
+      { enabled?: boolean; variant?: string; metadata?: { payload?: string } }
+    > = data.flags || {}
+
+    const feature_flags: FlagEvaluation = {}
+    const feature_flag_payloads: Record<string, any> = {}
+
+    for (const [key, flag] of Object.entries(flags)) {
+      feature_flags[key] = flag.variant ?? flag.enabled ?? false
+      if (flag.metadata?.payload !== undefined) {
+        try {
+          feature_flag_payloads[key] = JSON.parse(flag.metadata.payload)
+        } catch {
+          feature_flag_payloads[key] = flag.metadata.payload
+        }
+      }
+    }
 
     return {
-      feature_flags: data.featureFlags || {},
-      feature_flag_payloads: data.featureFlagPayloads || {},
+      feature_flags,
+      feature_flag_payloads,
       errors_while_computing_flags: data.errorsWhileComputingFlags || false,
     }
   },
diff --git a/apps/sim/tools/posthog/get_cohort.ts b/apps/sim/tools/posthog/get_cohort.ts
index eeddfd78bb9..f4887544aba 100644
--- a/apps/sim/tools/posthog/get_cohort.ts
+++ b/apps/sim/tools/posthog/get_cohort.ts
@@ -1,3 +1,4 @@
+import { getPostHogAppBaseUrl } from '@/tools/posthog/utils'
 import type { ToolConfig } from '@/tools/types'
 
 interface PostHogGetCohortParams {
@@ -5,6 +6,7 @@ interface PostHogGetCohortParams {
   projectId: string
   cohortId: string
   region: string
+  host?: string
 }
 
 interface PostHogGetCohortResponse {
@@ -34,6 +36,7 @@ export const getCohortTool: ToolConfig<PostHogGetCohortParams, PostHogGetCohortR
   description:
     'Get a specific cohort by ID from PostHog. Returns detailed cohort definition, filters, and user count.',
   version: '1.0.0',
+  errorExtractor: 'posthog-errors',
 
   params: {
     apiKey: {
@@ -61,11 +64,18 @@ export const getCohortTool: ToolConfig<PostHogGetCohortParams, PostHogGetCohortR
       description: 'PostHog cloud region: "us" or "eu" (default: "us")',
       default: 'us',
     },
+    host: {
+      type: 'string',
+      required: false,
+      visibility: 'user-only',
+      description:
+        'Self-hosted PostHog instance host (e.g., "posthog.mycompany.com"). Overrides the region setting when provided.',
+    },
   },
 
   request: {
     url: (params) => {
-      const baseUrl = params.region === 'eu' ? 'https://eu.posthog.com' : 'https://us.posthog.com'
+      const baseUrl = getPostHogAppBaseUrl(params.region as 'us' | 'eu' | undefined, params.host)
       return `${baseUrl}/api/projects/${params.projectId}/cohorts/${params.cohortId}/`
     },
     method: 'GET',
diff --git a/apps/sim/tools/posthog/get_dashboard.ts b/apps/sim/tools/posthog/get_dashboard.ts
index eabeb33f0ed..4ba2cb33168 100644
--- a/apps/sim/tools/posthog/get_dashboard.ts
+++ b/apps/sim/tools/posthog/get_dashboard.ts
@@ -1,3 +1,4 @@
+import { getPostHogAppBaseUrl } from '@/tools/posthog/utils'
 import type { ToolConfig } from '@/tools/types'
 
 interface PostHogGetDashboardParams {
@@ -5,6 +6,7 @@ interface PostHogGetDashboardParams {
   projectId: string
   dashboardId: string
   region: string
+  host?: string
 }
 
 interface PostHogGetDashboardResponse {
@@ -32,6 +34,7 @@ export const getDashboardTool: ToolConfig<PostHogGetDashboardParams, PostHogGetD
     description:
       'Get a specific dashboard by ID from PostHog. Returns detailed dashboard configuration, tiles, and metadata.',
     version: '1.0.0',
+    errorExtractor: 'posthog-errors',
 
     params: {
       apiKey: {
@@ -59,11 +62,18 @@ export const getDashboardTool: ToolConfig<PostHogGetDashboardParams, PostHogGetD
         description: 'PostHog cloud region: "us" or "eu" (default: "us")',
         default: 'us',
       },
+      host: {
+        type: 'string',
+        required: false,
+        visibility: 'user-only',
+        description:
+          'Self-hosted PostHog instance host (e.g., "posthog.mycompany.com"). Overrides the region setting when provided.',
+      },
     },
 
     request: {
       url: (params) => {
-        const baseUrl = params.region === 'eu' ? 'https://eu.posthog.com' : 'https://us.posthog.com'
+        const baseUrl = getPostHogAppBaseUrl(params.region as 'us' | 'eu' | undefined, params.host)
         return `${baseUrl}/api/projects/${params.projectId}/dashboards/${params.dashboardId}/`
       },
       method: 'GET',
diff --git a/apps/sim/tools/posthog/get_event_definition.ts b/apps/sim/tools/posthog/get_event_definition.ts
index 323ab20fb00..ee1e0bee0e8 100644
--- a/apps/sim/tools/posthog/get_event_definition.ts
+++ b/apps/sim/tools/posthog/get_event_definition.ts
@@ -1,9 +1,11 @@
+import { getPostHogAppBaseUrl } from '@/tools/posthog/utils'
 import type { ToolConfig } from '@/tools/types'
 
 interface PostHogGetEventDefinitionParams {
   projectId: string
   eventDefinitionId: string
   region: 'us' | 'eu'
+  host?: string
   apiKey: string
 }
 
@@ -12,8 +14,6 @@ interface EventDefinition {
   name: string
   description: string
   tags: string[]
-  volume_30_day: number | null
-  query_usage_30_day: number | null
   created_at: string
   last_seen_at: string | null
   updated_at: string
@@ -36,6 +36,7 @@ export const getEventDefinitionTool: ToolConfig<PostHogGetEventDefinitionParams,
     description:
       'Get details of a specific event definition in PostHog. Returns comprehensive information about the event including metadata, usage statistics, and verification status.',
     version: '1.0.0',
+    errorExtractor: 'posthog-errors',
 
     params: {
       projectId: {
@@ -56,6 +57,13 @@ export const getEventDefinitionTool: ToolConfig<PostHogGetEventDefinitionParams,
         visibility: 'user-only',
         description: 'PostHog cloud region: us or eu',
       },
+      host: {
+        type: 'string',
+        required: false,
+        visibility: 'user-only',
+        description:
+          'Self-hosted PostHog instance host (e.g., "posthog.mycompany.com"). Overrides the region setting when provided.',
+      },
       apiKey: {
         type: 'string',
         required: true,
@@ -66,7 +74,7 @@ export const getEventDefinitionTool: ToolConfig<PostHogGetEventDefinitionParams,
 
     request: {
       url: (params) => {
-        const baseUrl = params.region === 'eu' ? 'https://eu.posthog.com' : 'https://us.posthog.com'
+        const baseUrl = getPostHogAppBaseUrl(params.region, params.host)
         return `${baseUrl}/api/projects/${params.projectId}/event_definitions/${params.eventDefinitionId}`
       },
       method: 'GET',
@@ -84,8 +92,6 @@ export const getEventDefinitionTool: ToolConfig<PostHogGetEventDefinitionParams,
         name: data.name,
         description: data.description || '',
         tags: data.tags || [],
-        volume_30_day: data.volume_30_day ?? null,
-        query_usage_30_day: data.query_usage_30_day ?? null,
         created_at: data.created_at,
         last_seen_at: data.last_seen_at ?? null,
         updated_at: data.updated_at,
@@ -113,16 +119,6 @@ export const getEventDefinitionTool: ToolConfig<PostHogGetEventDefinitionParams,
         type: 'array',
         description: 'Tags associated with the event',
       },
-      volume_30_day: {
-        type: 'number',
-        description: 'Number of events received in the last 30 days',
-        optional: true,
-      },
-      query_usage_30_day: {
-        type: 'number',
-        description: 'Number of times this event was queried in the last 30 days',
-        optional: true,
-      },
       created_at: {
         type: 'string',
         description: 'ISO timestamp when the event was created',
diff --git a/apps/sim/tools/posthog/get_experiment.ts b/apps/sim/tools/posthog/get_experiment.ts
index a75db317727..cdeed0e76ea 100644
--- a/apps/sim/tools/posthog/get_experiment.ts
+++ b/apps/sim/tools/posthog/get_experiment.ts
@@ -1,9 +1,11 @@
+import { getPostHogAppBaseUrl } from '@/tools/posthog/utils'
 import type { ToolConfig } from '@/tools/types'
 
 interface GetExperimentParams {
   projectId: string
   experimentId: string
   region: 'us' | 'eu'
+  host?: string
   apiKey: string
 }
 
@@ -15,7 +17,6 @@ interface Experiment {
   feature_flag: Record<string, any>
   parameters: Record<string, any>
   filters: Record<string, any>
-  variants: Record<string, any>
   start_date: string | null
   end_date: string | null
   created_at: string
@@ -34,6 +35,7 @@ export const getExperimentTool: ToolConfig<GetExperimentParams, GetExperimentRes
   name: 'PostHog Get Experiment',
   description: 'Get details of a specific experiment',
   version: '1.0.0',
+  errorExtractor: 'posthog-errors',
 
   params: {
     projectId: {
@@ -54,6 +56,13 @@ export const getExperimentTool: ToolConfig<GetExperimentParams, GetExperimentRes
       visibility: 'user-only',
       description: 'PostHog cloud region: us or eu',
     },
+    host: {
+      type: 'string',
+      required: false,
+      visibility: 'user-only',
+      description:
+        'Self-hosted PostHog instance host (e.g., "posthog.mycompany.com"). Overrides the region setting when provided.',
+    },
     apiKey: {
       type: 'string',
       required: true,
@@ -64,8 +73,8 @@ export const getExperimentTool: ToolConfig<GetExperimentParams, GetExperimentRes
 
   request: {
     url: (params) => {
-      const baseUrl = params.region === 'eu' ? 'https://eu.posthog.com' : 'https://us.posthog.com'
-      return `${baseUrl}/api/projects/${params.projectId}/experiments/${params.experimentId}`
+      const baseUrl = getPostHogAppBaseUrl(params.region, params.host)
+      return `${baseUrl}/api/projects/${params.projectId}/experiments/${params.experimentId}/`
     },
     method: 'GET',
     headers: (params) => ({
@@ -94,7 +103,6 @@ export const getExperimentTool: ToolConfig<GetExperimentParams, GetExperimentRes
         feature_flag: { type: 'object', description: 'Feature flag details' },
         parameters: { type: 'object', description: 'Experiment parameters' },
         filters: { type: 'object', description: 'Experiment filters' },
-        variants: { type: 'object', description: 'Experiment variants' },
         start_date: { type: 'string', description: 'Start date' },
         end_date: { type: 'string', description: 'End date' },
         created_at: { type: 'string', description: 'Creation timestamp' },
diff --git a/apps/sim/tools/posthog/get_feature_flag.ts b/apps/sim/tools/posthog/get_feature_flag.ts
index 8176e8ca204..f4b37fe645d 100644
--- a/apps/sim/tools/posthog/get_feature_flag.ts
+++ b/apps/sim/tools/posthog/get_feature_flag.ts
@@ -1,9 +1,11 @@
+import { getPostHogAppBaseUrl } from '@/tools/posthog/utils'
 import type { ToolConfig } from '@/tools/types'
 
 interface GetFeatureFlagParams {
   projectId: string
   flagId: string
   region: 'us' | 'eu'
+  host?: string
   apiKey: string
 }
 
@@ -32,6 +34,7 @@ export const getFeatureFlagTool: ToolConfig<GetFeatureFlagParams, GetFeatureFlag
   name: 'PostHog Get Feature Flag',
   description: 'Get details of a specific feature flag',
   version: '1.0.0',
+  errorExtractor: 'posthog-errors',
 
   params: {
     projectId: {
@@ -52,6 +55,13 @@ export const getFeatureFlagTool: ToolConfig<GetFeatureFlagParams, GetFeatureFlag
       visibility: 'user-only',
       description: 'PostHog cloud region: us or eu',
     },
+    host: {
+      type: 'string',
+      required: false,
+      visibility: 'user-only',
+      description:
+        'Self-hosted PostHog instance host (e.g., "posthog.mycompany.com"). Overrides the region setting when provided.',
+    },
     apiKey: {
       type: 'string',
       required: true,
@@ -62,8 +72,8 @@ export const getFeatureFlagTool: ToolConfig<GetFeatureFlagParams, GetFeatureFlag
 
   request: {
     url: (params) => {
-      const baseUrl = params.region === 'eu' ? 'https://eu.posthog.com' : 'https://us.posthog.com'
-      return `${baseUrl}/api/projects/${params.projectId}/feature_flags/${params.flagId}`
+      const baseUrl = getPostHogAppBaseUrl(params.region, params.host)
+      return `${baseUrl}/api/projects/${params.projectId}/feature_flags/${params.flagId}/`
     },
     method: 'GET',
     headers: (params) => ({
diff --git a/apps/sim/tools/posthog/get_insight.ts b/apps/sim/tools/posthog/get_insight.ts
index 89299ba345f..cd52a54d020 100644
--- a/apps/sim/tools/posthog/get_insight.ts
+++ b/apps/sim/tools/posthog/get_insight.ts
@@ -1,3 +1,4 @@
+import { getPostHogAppBaseUrl } from '@/tools/posthog/utils'
 import type { ToolConfig } from '@/tools/types'
 
 interface PostHogGetInsightParams {
@@ -5,6 +6,7 @@ interface PostHogGetInsightParams {
   projectId: string
   insightId: string
   region: string
+  host?: string
 }
 
 interface PostHogGetInsightResponse {
@@ -13,13 +15,11 @@ interface PostHogGetInsightResponse {
     id: number
     name: string
     description: string
-    filters: Record<string, any>
     query: Record<string, any> | null
     created_at: string
     created_by: Record<string, any> | null
     last_modified_at: string
     last_modified_by: Record<string, any> | null
-    saved: boolean
     dashboards: number[]
     tags: string[]
     favorited: boolean
@@ -30,8 +30,9 @@ export const getInsightTool: ToolConfig<PostHogGetInsightParams, PostHogGetInsig
   id: 'posthog_get_insight',
   name: 'PostHog Get Insight',
   description:
-    'Get a specific insight by ID from PostHog. Returns detailed insight configuration, filters, and metadata.',
+    'Get a specific insight by ID from PostHog. Returns detailed insight configuration and metadata.',
   version: '1.0.0',
+  errorExtractor: 'posthog-errors',
 
   params: {
     apiKey: {
@@ -59,11 +60,18 @@ export const getInsightTool: ToolConfig<PostHogGetInsightParams, PostHogGetInsig
       description: 'PostHog cloud region: "us" or "eu" (default: "us")',
       default: 'us',
     },
+    host: {
+      type: 'string',
+      required: false,
+      visibility: 'user-only',
+      description:
+        'Self-hosted PostHog instance host (e.g., "posthog.mycompany.com"). Overrides the region setting when provided.',
+    },
   },
 
   request: {
     url: (params) => {
-      const baseUrl = params.region === 'eu' ? 'https://eu.posthog.com' : 'https://us.posthog.com'
+      const baseUrl = getPostHogAppBaseUrl(params.region as 'us' | 'eu' | undefined, params.host)
       return `${baseUrl}/api/projects/${params.projectId}/insights/${params.insightId}/`
     },
     method: 'GET',
@@ -82,13 +90,11 @@ export const getInsightTool: ToolConfig<PostHogGetInsightParams, PostHogGetInsig
         id: data.id,
         name: data.name || '',
         description: data.description || '',
-        filters: data.filters || {},
         query: data.query || null,
         created_at: data.created_at,
         created_by: data.created_by || null,
         last_modified_at: data.last_modified_at,
         last_modified_by: data.last_modified_by || null,
-        saved: data.saved || false,
         dashboards: data.dashboards || [],
         tags: data.tags || [],
         favorited: data.favorited || false,
@@ -109,10 +115,6 @@ export const getInsightTool: ToolConfig<PostHogGetInsightParams, PostHogGetInsig
       type: 'string',
       description: 'Description of the insight',
     },
-    filters: {
-      type: 'object',
-      description: 'Filter configuration for the insight',
-    },
     query: {
       type: 'object',
       description: 'Query configuration for the insight',
@@ -136,10 +138,6 @@ export const getInsightTool: ToolConfig<PostHogGetInsightParams, PostHogGetInsig
       description: 'User who last modified the insight',
       optional: true,
     },
-    saved: {
-      type: 'boolean',
-      description: 'Whether the insight is saved',
-    },
     dashboards: {
       type: 'array',
       description: 'IDs of dashboards this insight appears on',
diff --git a/apps/sim/tools/posthog/get_organization.ts b/apps/sim/tools/posthog/get_organization.ts
index f65ce359df7..0c56be786e1 100644
--- a/apps/sim/tools/posthog/get_organization.ts
+++ b/apps/sim/tools/posthog/get_organization.ts
@@ -1,9 +1,11 @@
+import { getPostHogAppBaseUrl } from '@/tools/posthog/utils'
 import type { ToolConfig } from '@/tools/types'
 
 export interface PostHogGetOrganizationParams {
   organizationId: string
   apiKey: string
   region?: 'us' | 'eu'
+  host?: string
 }
 
 interface PostHogOrganizationDetail {
@@ -48,6 +50,7 @@ export const getOrganizationTool: ToolConfig<
   description:
     'Get detailed information about a specific organization by ID. Returns comprehensive organization settings, features, usage, and team information.',
   version: '1.0.0',
+  errorExtractor: 'posthog-errors',
 
   params: {
     organizationId: {
@@ -68,11 +71,18 @@ export const getOrganizationTool: ToolConfig<
       visibility: 'user-only',
       description: 'Cloud region: us or eu (default: us)',
     },
+    host: {
+      type: 'string',
+      required: false,
+      visibility: 'user-only',
+      description:
+        'Self-hosted PostHog instance host (e.g., "posthog.mycompany.com"). Overrides the region setting when provided.',
+    },
   },
 
   request: {
     url: (params) => {
-      const baseUrl = params.region === 'eu' ? 'https://eu.posthog.com' : 'https://us.posthog.com'
+      const baseUrl = getPostHogAppBaseUrl(params.region, params.host)
       return `${baseUrl}/api/organizations/${params.organizationId}/`
     },
     method: 'GET',
diff --git a/apps/sim/tools/posthog/get_person.ts b/apps/sim/tools/posthog/get_person.ts
index ca3b53be7cf..5b022377ebf 100644
--- a/apps/sim/tools/posthog/get_person.ts
+++ b/apps/sim/tools/posthog/get_person.ts
@@ -1,8 +1,10 @@
+import { getPostHogAppBaseUrl } from '@/tools/posthog/utils'
 import type { ToolConfig } from '@/tools/types'
 
 export interface PostHogGetPersonParams {
   apiKey: string
   region?: 'us' | 'eu'
+  host?: string
   projectId: string
   personId: string
 }
@@ -26,6 +28,7 @@ export const getPersonTool: ToolConfig<PostHogGetPersonParams, PostHogGetPersonR
   name: 'PostHog Get Person',
   description: 'Get detailed information about a specific person in PostHog by their ID or UUID.',
   version: '1.0.0',
+  errorExtractor: 'posthog-errors',
 
   params: {
     apiKey: {
@@ -41,6 +44,13 @@ export const getPersonTool: ToolConfig<PostHogGetPersonParams, PostHogGetPersonR
       description: 'PostHog region: us (default) or eu',
       default: 'us',
     },
+    host: {
+      type: 'string',
+      required: false,
+      visibility: 'user-only',
+      description:
+        'Self-hosted PostHog instance host (e.g., "posthog.mycompany.com"). Overrides the region setting when provided.',
+    },
     projectId: {
       type: 'string',
       required: true,
@@ -57,7 +67,7 @@ export const getPersonTool: ToolConfig<PostHogGetPersonParams, PostHogGetPersonR
 
   request: {
     url: (params) => {
-      const baseUrl = params.region === 'eu' ? 'https://eu.posthog.com' : 'https://us.posthog.com'
+      const baseUrl = getPostHogAppBaseUrl(params.region, params.host)
       return `${baseUrl}/api/projects/${params.projectId}/persons/${params.personId}/`
     },
     method: 'GET',
@@ -68,24 +78,6 @@ export const getPersonTool: ToolConfig<PostHogGetPersonParams, PostHogGetPersonR
   },
 
   transformResponse: async (response: Response) => {
-    if (!response.ok) {
-      const error = await response.text()
-      return {
-        success: false,
-        output: {
-          person: {
-            id: '',
-            name: '',
-            distinct_ids: [],
-            properties: {},
-            created_at: '',
-            uuid: '',
-          },
-        },
-        error: error || 'Failed to get person',
-      }
-    }
-
     const data = await response.json()
 
     return {
diff --git a/apps/sim/tools/posthog/get_project.ts b/apps/sim/tools/posthog/get_project.ts
index fdabb347a08..9c4d4bb9aba 100644
--- a/apps/sim/tools/posthog/get_project.ts
+++ b/apps/sim/tools/posthog/get_project.ts
@@ -1,9 +1,11 @@
+import { getPostHogAppBaseUrl } from '@/tools/posthog/utils'
 import type { ToolConfig } from '@/tools/types'
 
 export interface PostHogGetProjectParams {
   projectId: string
   apiKey: string
   region?: 'us' | 'eu'
+  host?: string
 }
 
 interface PostHogProjectDetail {
@@ -50,6 +52,7 @@ export const getProjectTool: ToolConfig<PostHogGetProjectParams, PostHogGetProje
   description:
     'Get detailed information about a specific project by ID. Returns comprehensive project configuration, settings, and feature flags.',
   version: '1.0.0',
+  errorExtractor: 'posthog-errors',
 
   params: {
     projectId: {
@@ -70,11 +73,18 @@ export const getProjectTool: ToolConfig<PostHogGetProjectParams, PostHogGetProje
       visibility: 'user-only',
       description: 'Cloud region: us or eu (default: us)',
     },
+    host: {
+      type: 'string',
+      required: false,
+      visibility: 'user-only',
+      description:
+        'Self-hosted PostHog instance host (e.g., "posthog.mycompany.com"). Overrides the region setting when provided.',
+    },
   },
 
   request: {
     url: (params) => {
-      const baseUrl = params.region === 'eu' ? 'https://eu.posthog.com' : 'https://us.posthog.com'
+      const baseUrl = getPostHogAppBaseUrl(params.region, params.host)
       return `${baseUrl}/api/projects/${params.projectId}/`
     },
     method: 'GET',
diff --git a/apps/sim/tools/posthog/get_property_definition.ts b/apps/sim/tools/posthog/get_property_definition.ts
index fe491340367..e1d8f822951 100644
--- a/apps/sim/tools/posthog/get_property_definition.ts
+++ b/apps/sim/tools/posthog/get_property_definition.ts
@@ -1,9 +1,11 @@
+import { getPostHogAppBaseUrl } from '@/tools/posthog/utils'
 import type { ToolConfig } from '@/tools/types'
 
 interface PostHogGetPropertyDefinitionParams {
   projectId: string
   propertyDefinitionId: string
   region: 'us' | 'eu'
+  host?: string
   apiKey: string
 }
 
@@ -15,9 +17,7 @@ interface PropertyDefinition {
   is_numerical: boolean
   is_seen_on_filtered_events: boolean | null
   property_type: string
-  type: 'event' | 'person' | 'group'
-  volume_30_day: number | null
-  query_usage_30_day: number | null
+  type: 'event' | 'person' | 'group' | 'session'
   created_at: string
   updated_at: string
   updated_by: {
@@ -30,7 +30,6 @@ interface PropertyDefinition {
   verified: boolean
   verified_at: string | null
   verified_by: string | null
-  example: string | null
 }
 
 export const getPropertyDefinitionTool: ToolConfig<
@@ -42,6 +41,7 @@ export const getPropertyDefinitionTool: ToolConfig<
   description:
     'Get details of a specific property definition in PostHog. Returns comprehensive information about the property including metadata, type, usage statistics, and verification status.',
   version: '1.0.0',
+  errorExtractor: 'posthog-errors',
 
   params: {
     projectId: {
@@ -62,6 +62,13 @@ export const getPropertyDefinitionTool: ToolConfig<
       visibility: 'user-only',
       description: 'PostHog cloud region: us or eu',
     },
+    host: {
+      type: 'string',
+      required: false,
+      visibility: 'user-only',
+      description:
+        'Self-hosted PostHog instance host (e.g., "posthog.mycompany.com"). Overrides the region setting when provided.',
+    },
     apiKey: {
       type: 'string',
       required: true,
@@ -72,7 +79,7 @@ export const getPropertyDefinitionTool: ToolConfig<
 
   request: {
     url: (params) => {
-      const baseUrl = params.region === 'eu' ? 'https://eu.posthog.com' : 'https://us.posthog.com'
+      const baseUrl = getPostHogAppBaseUrl(params.region, params.host)
       return `${baseUrl}/api/projects/${params.projectId}/property_definitions/${params.propertyDefinitionId}`
     },
     method: 'GET',
@@ -94,15 +101,12 @@ export const getPropertyDefinitionTool: ToolConfig<
       is_seen_on_filtered_events: data.is_seen_on_filtered_events ?? null,
       property_type: data.property_type,
       type: data.type,
-      volume_30_day: data.volume_30_day ?? null,
-      query_usage_30_day: data.query_usage_30_day ?? null,
       created_at: data.created_at,
       updated_at: data.updated_at,
       updated_by: data.updated_by ?? null,
       verified: data.verified || false,
       verified_at: data.verified_at ?? null,
       verified_by: data.verified_by ?? null,
-      example: data.example ?? null,
     }
   },
 
@@ -138,17 +142,7 @@ export const getPropertyDefinitionTool: ToolConfig<
     },
     type: {
       type: 'string',
-      description: 'Property type: event, person, or group',
-    },
-    volume_30_day: {
-      type: 'number',
-      description: 'Number of times property was seen in the last 30 days',
-      optional: true,
-    },
-    query_usage_30_day: {
-      type: 'number',
-      description: 'Number of times this property was queried in the last 30 days',
-      optional: true,
+      description: 'Property type: event, person, group, or session',
     },
     created_at: {
       type: 'string',
@@ -177,10 +171,5 @@ export const getPropertyDefinitionTool: ToolConfig<
       description: 'User who verified the property',
       optional: true,
     },
-    example: {
-      type: 'string',
-      description: 'Example value for the property',
-      optional: true,
-    },
   },
 }
diff --git a/apps/sim/tools/posthog/get_session_recording.ts b/apps/sim/tools/posthog/get_session_recording.ts
index 551bc01fdb6..831591fd11f 100644
--- a/apps/sim/tools/posthog/get_session_recording.ts
+++ b/apps/sim/tools/posthog/get_session_recording.ts
@@ -1,3 +1,4 @@
+import { getPostHogAppBaseUrl } from '@/tools/posthog/utils'
 import type { ToolConfig } from '@/tools/types'
 
 interface PostHogGetSessionRecordingParams {
@@ -5,6 +6,7 @@ interface PostHogGetSessionRecordingParams {
   projectId: string
   recordingId: string
   region?: 'us' | 'eu'
+  host?: string
 }
 
 interface PostHogSessionRecording {
@@ -27,13 +29,6 @@ interface PostHogSessionRecording {
     name?: string
     properties?: Record<string, any>
   }
-  matching_events?: Array<{
-    id: string
-    event: string
-    timestamp: string
-    properties: Record<string, any>
-  }>
-  snapshot_data_by_window_id?: Record<string, any>
 }
 
 interface PostHogGetSessionRecordingResponse {
@@ -51,6 +46,7 @@ export const getSessionRecordingTool: ToolConfig<
   name: 'PostHog Get Session Recording',
   description: 'Get details of a specific session recording in PostHog by ID.',
   version: '1.0.0',
+  errorExtractor: 'posthog-errors',
 
   params: {
     apiKey: {
@@ -79,11 +75,18 @@ export const getSessionRecordingTool: ToolConfig<
       description: 'PostHog cloud region: us or eu (default: us)',
       default: 'us',
     },
+    host: {
+      type: 'string',
+      required: false,
+      visibility: 'user-only',
+      description:
+        'Self-hosted PostHog instance host (e.g., "posthog.mycompany.com"). Overrides the region setting when provided.',
+    },
   },
 
   request: {
     url: (params) => {
-      const baseUrl = params.region === 'eu' ? 'https://eu.posthog.com' : 'https://us.posthog.com'
+      const baseUrl = getPostHogAppBaseUrl(params.region, params.host)
       return `${baseUrl}/api/projects/${params.projectId}/session_recordings/${params.recordingId}/`
     },
     method: 'GET',
@@ -124,7 +127,6 @@ export const getSessionRecordingTool: ToolConfig<
         console_error_count: { type: 'number', description: 'Number of console errors' },
         start_url: { type: 'string', description: 'Starting URL of the recording' },
         person: { type: 'object', description: 'Person information' },
-        matching_events: { type: 'array', description: 'Events that occurred during recording' },
       },
     },
   },
diff --git a/apps/sim/tools/posthog/get_survey.ts b/apps/sim/tools/posthog/get_survey.ts
index 04c31bce284..9331e634d6f 100644
--- a/apps/sim/tools/posthog/get_survey.ts
+++ b/apps/sim/tools/posthog/get_survey.ts
@@ -1,3 +1,4 @@
+import { getPostHogAppBaseUrl } from '@/tools/posthog/utils'
 import type { ToolConfig } from '@/tools/types'
 
 interface PostHogGetSurveyParams {
@@ -5,6 +6,7 @@ interface PostHogGetSurveyParams {
   projectId: string
   surveyId: string
   region?: 'us' | 'eu'
+  host?: string
 }
 
 interface PostHogSurveyQuestion {
@@ -48,6 +50,7 @@ export const getSurveyTool: ToolConfig<PostHogGetSurveyParams, PostHogGetSurveyR
   name: 'PostHog Get Survey',
   description: 'Get details of a specific survey in PostHog by ID.',
   version: '1.0.0',
+  errorExtractor: 'posthog-errors',
 
   params: {
     apiKey: {
@@ -75,11 +78,18 @@ export const getSurveyTool: ToolConfig<PostHogGetSurveyParams, PostHogGetSurveyR
       description: 'PostHog cloud region: us or eu (default: us)',
       default: 'us',
     },
+    host: {
+      type: 'string',
+      required: false,
+      visibility: 'user-only',
+      description:
+        'Self-hosted PostHog instance host (e.g., "posthog.mycompany.com"). Overrides the region setting when provided.',
+    },
   },
 
   request: {
     url: (params) => {
-      const baseUrl = params.region === 'eu' ? 'https://eu.posthog.com' : 'https://us.posthog.com'
+      const baseUrl = getPostHogAppBaseUrl(params.region, params.host)
       return `${baseUrl}/api/projects/${params.projectId}/surveys/${params.surveyId}/`
     },
     method: 'GET',
diff --git a/apps/sim/tools/posthog/index.ts b/apps/sim/tools/posthog/index.ts
index 7868ecab553..76d30913838 100644
--- a/apps/sim/tools/posthog/index.ts
+++ b/apps/sim/tools/posthog/index.ts
@@ -4,12 +4,14 @@ import { batchEventsTool } from '@/tools/posthog/batch_events'
 import { captureEventTool } from '@/tools/posthog/capture_event'
 import { createAnnotationTool } from '@/tools/posthog/create_annotation'
 import { createCohortTool } from '@/tools/posthog/create_cohort'
+import { createDashboardTool } from '@/tools/posthog/create_dashboard'
 import { createExperimentTool } from '@/tools/posthog/create_experiment'
 import { createFeatureFlagTool } from '@/tools/posthog/create_feature_flag'
 import { createInsightTool } from '@/tools/posthog/create_insight'
 import { createSurveyTool } from '@/tools/posthog/create_survey'
 import { deleteFeatureFlagTool } from '@/tools/posthog/delete_feature_flag'
 import { deletePersonTool } from '@/tools/posthog/delete_person'
+import { deleteSurveyTool } from '@/tools/posthog/delete_survey'
 import { evaluateFlagsTool } from '@/tools/posthog/evaluate_flags'
 import { getCohortTool } from '@/tools/posthog/get_cohort'
 import { getDashboardTool } from '@/tools/posthog/get_dashboard'
@@ -44,8 +46,11 @@ import { listSessionRecordingsTool } from '@/tools/posthog/list_session_recordin
 // Engagement
 import { listSurveysTool } from '@/tools/posthog/list_surveys'
 import { queryTool } from '@/tools/posthog/query'
+import { updateCohortTool } from '@/tools/posthog/update_cohort'
 import { updateEventDefinitionTool } from '@/tools/posthog/update_event_definition'
+import { updateExperimentTool } from '@/tools/posthog/update_experiment'
 import { updateFeatureFlagTool } from '@/tools/posthog/update_feature_flag'
+import { updateInsightTool } from '@/tools/posthog/update_insight'
 import { updatePropertyDefinitionTool } from '@/tools/posthog/update_property_definition'
 import { updateSurveyTool } from '@/tools/posthog/update_survey'
 
@@ -60,12 +65,15 @@ export const posthogQueryTool = queryTool
 export const posthogListInsightsTool = listInsightsTool
 export const posthogGetInsightTool = getInsightTool
 export const posthogCreateInsightTool = createInsightTool
+export const posthogUpdateInsightTool = updateInsightTool
 export const posthogListDashboardsTool = listDashboardsTool
 export const posthogGetDashboardTool = getDashboardTool
+export const posthogCreateDashboardTool = createDashboardTool
 export const posthogListActionsTool = listActionsTool
 export const posthogListCohortsTool = listCohortsTool
 export const posthogGetCohortTool = getCohortTool
 export const posthogCreateCohortTool = createCohortTool
+export const posthogUpdateCohortTool = updateCohortTool
 export const posthogListAnnotationsTool = listAnnotationsTool
 export const posthogCreateAnnotationTool = createAnnotationTool
 
@@ -78,11 +86,13 @@ export const posthogEvaluateFlagsTool = evaluateFlagsTool
 export const posthogListExperimentsTool = listExperimentsTool
 export const posthogGetExperimentTool = getExperimentTool
 export const posthogCreateExperimentTool = createExperimentTool
+export const posthogUpdateExperimentTool = updateExperimentTool
 
 export const posthogListSurveysTool = listSurveysTool
 export const posthogGetSurveyTool = getSurveyTool
 export const posthogCreateSurveyTool = createSurveyTool
 export const posthogUpdateSurveyTool = updateSurveyTool
+export const posthogDeleteSurveyTool = deleteSurveyTool
 export const posthogListSessionRecordingsTool = listSessionRecordingsTool
 export const posthogGetSessionRecordingTool = getSessionRecordingTool
 export const posthogListRecordingPlaylistsTool = listRecordingPlaylistsTool
diff --git a/apps/sim/tools/posthog/list_actions.ts b/apps/sim/tools/posthog/list_actions.ts
index 263a5022883..1bd7a92fdc6 100644
--- a/apps/sim/tools/posthog/list_actions.ts
+++ b/apps/sim/tools/posthog/list_actions.ts
@@ -1,11 +1,14 @@
+import { getPostHogAppBaseUrl } from '@/tools/posthog/utils'
 import type { ToolConfig } from '@/tools/types'
 
 interface PostHogListActionsParams {
   apiKey: string
   projectId: string
   region: string
+  host?: string
   limit?: number
   offset?: number
+  search?: string
 }
 
 interface PostHogListActionsResponse {
@@ -37,6 +40,7 @@ export const listActionsTool: ToolConfig<PostHogListActionsParams, PostHogListAc
   description:
     'List all actions in a PostHog project. Returns action definitions, steps, and metadata.',
   version: '1.0.0',
+  errorExtractor: 'posthog-errors',
 
   params: {
     apiKey: {
@@ -58,6 +62,13 @@ export const listActionsTool: ToolConfig<PostHogListActionsParams, PostHogListAc
       description: 'PostHog cloud region: "us" or "eu" (default: "us")',
       default: 'us',
     },
+    host: {
+      type: 'string',
+      required: false,
+      visibility: 'user-only',
+      description:
+        'Self-hosted PostHog instance host (e.g., "posthog.mycompany.com"). Overrides the region setting when provided.',
+    },
     limit: {
       type: 'number',
       required: false,
@@ -70,16 +81,23 @@ export const listActionsTool: ToolConfig<PostHogListActionsParams, PostHogListAc
       visibility: 'user-or-llm',
       description: 'Number of results to skip for pagination (e.g., 0, 100, 200)',
     },
+    search: {
+      type: 'string',
+      required: false,
+      visibility: 'user-or-llm',
+      description: 'Search term to filter actions by name',
+    },
   },
 
   request: {
     url: (params) => {
-      const baseUrl = params.region === 'eu' ? 'https://eu.posthog.com' : 'https://us.posthog.com'
+      const baseUrl = getPostHogAppBaseUrl(params.region as 'us' | 'eu' | undefined, params.host)
       let url = `${baseUrl}/api/projects/${params.projectId}/actions/`
 
       const queryParams = []
       if (params.limit) queryParams.push(`limit=${params.limit}`)
       if (params.offset) queryParams.push(`offset=${params.offset}`)
+      if (params.search) queryParams.push(`search=${encodeURIComponent(params.search)}`)
 
       if (queryParams.length > 0) {
         url += `?${queryParams.join('&')}`
diff --git a/apps/sim/tools/posthog/list_annotations.ts b/apps/sim/tools/posthog/list_annotations.ts
index a6e56140005..cd3602a4647 100644
--- a/apps/sim/tools/posthog/list_annotations.ts
+++ b/apps/sim/tools/posthog/list_annotations.ts
@@ -1,9 +1,11 @@
+import { getPostHogAppBaseUrl } from '@/tools/posthog/utils'
 import type { ToolConfig } from '@/tools/types'
 
 interface PostHogListAnnotationsParams {
   apiKey: string
   projectId: string
   region: string
+  host?: string
   limit?: number
   offset?: number
 }
@@ -22,6 +24,7 @@ interface PostHogListAnnotationsResponse {
       updated_at: string
       created_by: Record<string, any> | null
       dashboard_item: number | null
+      dashboard_id: number | null
       insight_short_id: string | null
       insight_name: string | null
       scope: string
@@ -39,6 +42,7 @@ export const listAnnotationsTool: ToolConfig<
   description:
     'List all annotations in a PostHog project. Returns annotation content, timestamps, and associated insights.',
   version: '1.0.0',
+  errorExtractor: 'posthog-errors',
 
   params: {
     apiKey: {
@@ -60,6 +64,13 @@ export const listAnnotationsTool: ToolConfig<
       description: 'PostHog cloud region: "us" or "eu" (default: "us")',
       default: 'us',
     },
+    host: {
+      type: 'string',
+      required: false,
+      visibility: 'user-only',
+      description:
+        'Self-hosted PostHog instance host (e.g., "posthog.mycompany.com"). Overrides the region setting when provided.',
+    },
     limit: {
       type: 'number',
       required: false,
@@ -76,7 +87,7 @@ export const listAnnotationsTool: ToolConfig<
 
   request: {
     url: (params) => {
-      const baseUrl = params.region === 'eu' ? 'https://eu.posthog.com' : 'https://us.posthog.com'
+      const baseUrl = getPostHogAppBaseUrl(params.region as 'us' | 'eu' | undefined, params.host)
       let url = `${baseUrl}/api/projects/${params.projectId}/annotations/`
 
       const queryParams = []
@@ -113,6 +124,7 @@ export const listAnnotationsTool: ToolConfig<
           updated_at: annotation.updated_at,
           created_by: annotation.created_by || null,
           dashboard_item: annotation.dashboard_item || null,
+          dashboard_id: annotation.dashboard_id || null,
           insight_short_id: annotation.insight_short_id || null,
           insight_name: annotation.insight_name || null,
           scope: annotation.scope || '',
@@ -162,6 +174,10 @@ export const listAnnotationsTool: ToolConfig<
             type: 'number',
             description: 'ID of dashboard item this annotation is attached to',
           },
+          dashboard_id: {
+            type: 'number',
+            description: 'ID of the dashboard this annotation is attached to',
+          },
           insight_short_id: {
             type: 'string',
             description: 'Short ID of the insight this annotation is attached to',
diff --git a/apps/sim/tools/posthog/list_cohorts.ts b/apps/sim/tools/posthog/list_cohorts.ts
index 2c310844d88..d7be4511de8 100644
--- a/apps/sim/tools/posthog/list_cohorts.ts
+++ b/apps/sim/tools/posthog/list_cohorts.ts
@@ -1,9 +1,11 @@
+import { getPostHogAppBaseUrl } from '@/tools/posthog/utils'
 import type { ToolConfig } from '@/tools/types'
 
 interface PostHogListCohortsParams {
   apiKey: string
   projectId: string
   region: string
+  host?: string
   limit?: number
   offset?: number
 }
@@ -39,6 +41,7 @@ export const listCohortsTool: ToolConfig<PostHogListCohortsParams, PostHogListCo
   description:
     'List all cohorts in a PostHog project. Returns cohort definitions, filters, and user counts.',
   version: '1.0.0',
+  errorExtractor: 'posthog-errors',
 
   params: {
     apiKey: {
@@ -60,6 +63,13 @@ export const listCohortsTool: ToolConfig<PostHogListCohortsParams, PostHogListCo
       description: 'PostHog cloud region: "us" or "eu" (default: "us")',
       default: 'us',
     },
+    host: {
+      type: 'string',
+      required: false,
+      visibility: 'user-only',
+      description:
+        'Self-hosted PostHog instance host (e.g., "posthog.mycompany.com"). Overrides the region setting when provided.',
+    },
     limit: {
       type: 'number',
       required: false,
@@ -76,7 +86,7 @@ export const listCohortsTool: ToolConfig<PostHogListCohortsParams, PostHogListCo
 
   request: {
     url: (params) => {
-      const baseUrl = params.region === 'eu' ? 'https://eu.posthog.com' : 'https://us.posthog.com'
+      const baseUrl = getPostHogAppBaseUrl(params.region as 'us' | 'eu' | undefined, params.host)
       let url = `${baseUrl}/api/projects/${params.projectId}/cohorts/`
 
       const queryParams = []
diff --git a/apps/sim/tools/posthog/list_dashboards.ts b/apps/sim/tools/posthog/list_dashboards.ts
index 7cbb2b231ac..c19ffbe2cd0 100644
--- a/apps/sim/tools/posthog/list_dashboards.ts
+++ b/apps/sim/tools/posthog/list_dashboards.ts
@@ -1,9 +1,11 @@
+import { getPostHogAppBaseUrl } from '@/tools/posthog/utils'
 import type { ToolConfig } from '@/tools/types'
 
 interface PostHogListDashboardsParams {
   apiKey: string
   projectId: string
   region: string
+  host?: string
   limit?: number
   offset?: number
 }
@@ -39,6 +41,7 @@ export const listDashboardsTool: ToolConfig<
   description:
     'List all dashboards in a PostHog project. Returns dashboard configurations, tiles, and metadata.',
   version: '1.0.0',
+  errorExtractor: 'posthog-errors',
 
   params: {
     apiKey: {
@@ -60,6 +63,13 @@ export const listDashboardsTool: ToolConfig<
       description: 'PostHog cloud region: "us" or "eu" (default: "us")',
       default: 'us',
     },
+    host: {
+      type: 'string',
+      required: false,
+      visibility: 'user-only',
+      description:
+        'Self-hosted PostHog instance host (e.g., "posthog.mycompany.com"). Overrides the region setting when provided.',
+    },
     limit: {
       type: 'number',
       required: false,
@@ -76,7 +86,7 @@ export const listDashboardsTool: ToolConfig<
 
   request: {
     url: (params) => {
-      const baseUrl = params.region === 'eu' ? 'https://eu.posthog.com' : 'https://us.posthog.com'
+      const baseUrl = getPostHogAppBaseUrl(params.region as 'us' | 'eu' | undefined, params.host)
       let url = `${baseUrl}/api/projects/${params.projectId}/dashboards/`
 
       const queryParams = []
diff --git a/apps/sim/tools/posthog/list_event_definitions.ts b/apps/sim/tools/posthog/list_event_definitions.ts
index 082f66d6db5..ecf5d26052b 100644
--- a/apps/sim/tools/posthog/list_event_definitions.ts
+++ b/apps/sim/tools/posthog/list_event_definitions.ts
@@ -1,8 +1,10 @@
+import { getPostHogAppBaseUrl } from '@/tools/posthog/utils'
 import type { ToolConfig } from '@/tools/types'
 
 interface PostHogListEventDefinitionsParams {
   projectId: string
   region: 'us' | 'eu'
+  host?: string
   apiKey: string
   limit?: number
   offset?: number
@@ -14,8 +16,6 @@ interface EventDefinition {
   name: string
   description: string
   tags: string[]
-  volume_30_day: number | null
-  query_usage_30_day: number | null
   created_at: string
   last_seen_at: string | null
   updated_at: string
@@ -44,6 +44,7 @@ export const listEventDefinitionsTool: ToolConfig<
   description:
     'List all event definitions in a PostHog project. Event definitions represent tracked events with metadata like descriptions, tags, and usage statistics.',
   version: '1.0.0',
+  errorExtractor: 'posthog-errors',
 
   params: {
     projectId: {
@@ -58,6 +59,13 @@ export const listEventDefinitionsTool: ToolConfig<
       visibility: 'user-only',
       description: 'PostHog cloud region: us or eu',
     },
+    host: {
+      type: 'string',
+      required: false,
+      visibility: 'user-only',
+      description:
+        'Self-hosted PostHog instance host (e.g., "posthog.mycompany.com"). Overrides the region setting when provided.',
+    },
     apiKey: {
       type: 'string',
       required: true,
@@ -86,7 +94,7 @@ export const listEventDefinitionsTool: ToolConfig<
 
   request: {
     url: (params) => {
-      const baseUrl = params.region === 'eu' ? 'https://eu.posthog.com' : 'https://us.posthog.com'
+      const baseUrl = getPostHogAppBaseUrl(params.region, params.host)
       const queryParams = new URLSearchParams()
 
       if (params.limit) queryParams.append('limit', params.limit.toString())
@@ -115,8 +123,6 @@ export const listEventDefinitionsTool: ToolConfig<
         name: event.name,
         description: event.description || '',
         tags: event.tags || [],
-        volume_30_day: event.volume_30_day ?? null,
-        query_usage_30_day: event.query_usage_30_day ?? null,
         created_at: event.created_at,
         last_seen_at: event.last_seen_at ?? null,
         updated_at: event.updated_at,
@@ -150,16 +156,6 @@ export const listEventDefinitionsTool: ToolConfig<
           name: { type: 'string', description: 'Event name' },
           description: { type: 'string', description: 'Event description' },
           tags: { type: 'array', description: 'Tags associated with the event' },
-          volume_30_day: {
-            type: 'number',
-            description: 'Number of events received in the last 30 days',
-            optional: true,
-          },
-          query_usage_30_day: {
-            type: 'number',
-            description: 'Number of times this event was queried in the last 30 days',
-            optional: true,
-          },
           created_at: { type: 'string', description: 'ISO timestamp when the event was created' },
           last_seen_at: {
             type: 'string',
diff --git a/apps/sim/tools/posthog/list_experiments.ts b/apps/sim/tools/posthog/list_experiments.ts
index a78c359652c..918ab47c7e7 100644
--- a/apps/sim/tools/posthog/list_experiments.ts
+++ b/apps/sim/tools/posthog/list_experiments.ts
@@ -1,8 +1,10 @@
+import { getPostHogAppBaseUrl } from '@/tools/posthog/utils'
 import type { ToolConfig } from '@/tools/types'
 
 interface ListExperimentsParams {
   projectId: string
   region: 'us' | 'eu'
+  host?: string
   apiKey: string
   limit?: number
   offset?: number
@@ -16,7 +18,6 @@ interface Experiment {
   feature_flag: Record<string, any>
   parameters: Record<string, any>
   filters: Record<string, any>
-  variants: Record<string, any>
   start_date: string | null
   end_date: string | null
   created_at: string
@@ -36,6 +37,7 @@ export const listExperimentsTool: ToolConfig<ListExperimentsParams, ListExperime
   name: 'PostHog List Experiments',
   description: 'List all experiments in a PostHog project',
   version: '1.0.0',
+  errorExtractor: 'posthog-errors',
 
   params: {
     projectId: {
@@ -50,6 +52,13 @@ export const listExperimentsTool: ToolConfig<ListExperimentsParams, ListExperime
       visibility: 'user-only',
       description: 'PostHog cloud region: us or eu',
     },
+    host: {
+      type: 'string',
+      required: false,
+      visibility: 'user-only',
+      description:
+        'Self-hosted PostHog instance host (e.g., "posthog.mycompany.com"). Overrides the region setting when provided.',
+    },
     apiKey: {
       type: 'string',
       required: true,
@@ -72,7 +81,7 @@ export const listExperimentsTool: ToolConfig<ListExperimentsParams, ListExperime
 
   request: {
     url: (params) => {
-      const baseUrl = params.region === 'eu' ? 'https://eu.posthog.com' : 'https://us.posthog.com'
+      const baseUrl = getPostHogAppBaseUrl(params.region, params.host)
       const url = new URL(`${baseUrl}/api/projects/${params.projectId}/experiments/`)
 
       if (params.limit) url.searchParams.append('limit', String(params.limit))
@@ -112,7 +121,6 @@ export const listExperimentsTool: ToolConfig<ListExperimentsParams, ListExperime
           feature_flag: { type: 'object', description: 'Feature flag details' },
           parameters: { type: 'object', description: 'Experiment parameters' },
           filters: { type: 'object', description: 'Experiment filters' },
-          variants: { type: 'object', description: 'Experiment variants' },
           start_date: { type: 'string', description: 'Start date', optional: true },
           end_date: { type: 'string', description: 'End date', optional: true },
           created_at: { type: 'string', description: 'Creation timestamp' },
diff --git a/apps/sim/tools/posthog/list_feature_flags.ts b/apps/sim/tools/posthog/list_feature_flags.ts
index 15f160c79f1..bcc8bf84b6a 100644
--- a/apps/sim/tools/posthog/list_feature_flags.ts
+++ b/apps/sim/tools/posthog/list_feature_flags.ts
@@ -1,8 +1,10 @@
+import { getPostHogAppBaseUrl } from '@/tools/posthog/utils'
 import type { ToolConfig } from '@/tools/types'
 
 interface ListFeatureFlagsParams {
   projectId: string
   region: 'us' | 'eu'
+  host?: string
   apiKey: string
   limit?: number
   offset?: number
@@ -34,6 +36,7 @@ export const listFeatureFlagsTool: ToolConfig<ListFeatureFlagsParams, ListFeatur
   name: 'PostHog List Feature Flags',
   description: 'List all feature flags in a PostHog project',
   version: '1.0.0',
+  errorExtractor: 'posthog-errors',
 
   params: {
     projectId: {
@@ -48,6 +51,13 @@ export const listFeatureFlagsTool: ToolConfig<ListFeatureFlagsParams, ListFeatur
       visibility: 'user-only',
       description: 'PostHog cloud region: us or eu',
     },
+    host: {
+      type: 'string',
+      required: false,
+      visibility: 'user-only',
+      description:
+        'Self-hosted PostHog instance host (e.g., "posthog.mycompany.com"). Overrides the region setting when provided.',
+    },
     apiKey: {
       type: 'string',
       required: true,
@@ -70,7 +80,7 @@ export const listFeatureFlagsTool: ToolConfig<ListFeatureFlagsParams, ListFeatur
 
   request: {
     url: (params) => {
-      const baseUrl = params.region === 'eu' ? 'https://eu.posthog.com' : 'https://us.posthog.com'
+      const baseUrl = getPostHogAppBaseUrl(params.region, params.host)
       const url = new URL(`${baseUrl}/api/projects/${params.projectId}/feature_flags/`)
 
       if (params.limit) url.searchParams.append('limit', String(params.limit))
diff --git a/apps/sim/tools/posthog/list_insights.ts b/apps/sim/tools/posthog/list_insights.ts
index dca948d80e9..15aff43ae6a 100644
--- a/apps/sim/tools/posthog/list_insights.ts
+++ b/apps/sim/tools/posthog/list_insights.ts
@@ -1,9 +1,11 @@
+import { getPostHogAppBaseUrl } from '@/tools/posthog/utils'
 import type { ToolConfig } from '@/tools/types'
 
 interface PostHogListInsightsParams {
   apiKey: string
   projectId: string
   region: string
+  host?: string
   limit?: number
   offset?: number
 }
@@ -18,13 +20,11 @@ interface PostHogListInsightsResponse {
       id: number
       name: string
       description: string
-      filters: Record<string, any>
       query: Record<string, any> | null
       created_at: string
       created_by: Record<string, any> | null
       last_modified_at: string
       last_modified_by: Record<string, any> | null
-      saved: boolean
       dashboards: number[]
     }>
   }
@@ -35,8 +35,9 @@ export const listInsightsTool: ToolConfig<PostHogListInsightsParams, PostHogList
     id: 'posthog_list_insights',
     name: 'PostHog List Insights',
     description:
-      'List all insights in a PostHog project. Returns insight configurations, filters, and metadata.',
+      'List all insights in a PostHog project. Returns insight configurations and metadata.',
     version: '1.0.0',
+    errorExtractor: 'posthog-errors',
 
     params: {
       apiKey: {
@@ -58,6 +59,13 @@ export const listInsightsTool: ToolConfig<PostHogListInsightsParams, PostHogList
         description: 'PostHog cloud region: "us" or "eu" (default: "us")',
         default: 'us',
       },
+      host: {
+        type: 'string',
+        required: false,
+        visibility: 'user-only',
+        description:
+          'Self-hosted PostHog instance host (e.g., "posthog.mycompany.com"). Overrides the region setting when provided.',
+      },
       limit: {
         type: 'number',
         required: false,
@@ -74,7 +82,7 @@ export const listInsightsTool: ToolConfig<PostHogListInsightsParams, PostHogList
 
     request: {
       url: (params) => {
-        const baseUrl = params.region === 'eu' ? 'https://eu.posthog.com' : 'https://us.posthog.com'
+        const baseUrl = getPostHogAppBaseUrl(params.region as 'us' | 'eu' | undefined, params.host)
         let url = `${baseUrl}/api/projects/${params.projectId}/insights/`
 
         const queryParams = []
@@ -107,13 +115,11 @@ export const listInsightsTool: ToolConfig<PostHogListInsightsParams, PostHogList
             id: insight.id,
             name: insight.name || '',
             description: insight.description || '',
-            filters: insight.filters || {},
             query: insight.query || null,
             created_at: insight.created_at,
             created_by: insight.created_by || null,
             last_modified_at: insight.last_modified_at,
             last_modified_by: insight.last_modified_by || null,
-            saved: insight.saved || false,
             dashboards: insight.dashboards || [],
           })),
         },
@@ -144,7 +150,6 @@ export const listInsightsTool: ToolConfig<PostHogListInsightsParams, PostHogList
             id: { type: 'number', description: 'Unique identifier for the insight' },
             name: { type: 'string', description: 'Name of the insight' },
             description: { type: 'string', description: 'Description of the insight' },
-            filters: { type: 'object', description: 'Filter configuration for the insight' },
             query: { type: 'object', description: 'Query configuration for the insight' },
             created_at: { type: 'string', description: 'ISO timestamp when insight was created' },
             created_by: { type: 'object', description: 'User who created the insight' },
@@ -153,7 +158,6 @@ export const listInsightsTool: ToolConfig<PostHogListInsightsParams, PostHogList
               description: 'ISO timestamp when insight was last modified',
             },
             last_modified_by: { type: 'object', description: 'User who last modified the insight' },
-            saved: { type: 'boolean', description: 'Whether the insight is saved' },
             dashboards: {
               type: 'array',
               description: 'IDs of dashboards this insight appears on',
diff --git a/apps/sim/tools/posthog/list_organizations.ts b/apps/sim/tools/posthog/list_organizations.ts
index e2e37c8fe84..306f130c582 100644
--- a/apps/sim/tools/posthog/list_organizations.ts
+++ b/apps/sim/tools/posthog/list_organizations.ts
@@ -1,8 +1,10 @@
+import { getPostHogAppBaseUrl } from '@/tools/posthog/utils'
 import type { ToolConfig } from '@/tools/types'
 
 export interface PostHogListOrganizationsParams {
   apiKey: string
   region?: 'us' | 'eu'
+  host?: string
 }
 
 interface PostHogOrganization {
@@ -41,6 +43,7 @@ export const listOrganizationsTool: ToolConfig<
   description:
     'List all organizations the user has access to. Returns organization details including name, slug, membership level, and available product features.',
   version: '1.0.0',
+  errorExtractor: 'posthog-errors',
 
   params: {
     apiKey: {
@@ -55,11 +58,18 @@ export const listOrganizationsTool: ToolConfig<
       visibility: 'user-only',
       description: 'Cloud region: us or eu (default: us)',
     },
+    host: {
+      type: 'string',
+      required: false,
+      visibility: 'user-only',
+      description:
+        'Self-hosted PostHog instance host (e.g., "posthog.mycompany.com"). Overrides the region setting when provided.',
+    },
   },
 
   request: {
     url: (params) => {
-      const baseUrl = params.region === 'eu' ? 'https://eu.posthog.com' : 'https://us.posthog.com'
+      const baseUrl = getPostHogAppBaseUrl(params.region, params.host)
       return `${baseUrl}/api/organizations/`
     },
     method: 'GET',
@@ -75,7 +85,7 @@ export const listOrganizationsTool: ToolConfig<
     return {
       success: true,
       output: {
-        organizations: data.results.map((org: any) => ({
+        organizations: (data.results || []).map((org: any) => ({
           id: org.id,
           name: org.name,
           slug: org.slug,
diff --git a/apps/sim/tools/posthog/list_persons.ts b/apps/sim/tools/posthog/list_persons.ts
index ba11802492a..442bf5b9c99 100644
--- a/apps/sim/tools/posthog/list_persons.ts
+++ b/apps/sim/tools/posthog/list_persons.ts
@@ -1,8 +1,10 @@
+import { getPostHogAppBaseUrl } from '@/tools/posthog/utils'
 import type { ToolConfig } from '@/tools/types'
 
 export interface PostHogListPersonsParams {
   apiKey: string
   region?: 'us' | 'eu'
+  host?: string
   projectId: string
   limit?: number
   offset?: number
@@ -33,6 +35,7 @@ export const listPersonsTool: ToolConfig<PostHogListPersonsParams, PostHogListPe
   description:
     'List persons (users) in PostHog. Returns user profiles with their properties and distinct IDs.',
   version: '1.0.0',
+  errorExtractor: 'posthog-errors',
 
   params: {
     apiKey: {
@@ -48,6 +51,13 @@ export const listPersonsTool: ToolConfig<PostHogListPersonsParams, PostHogListPe
       description: 'PostHog region: us (default) or eu',
       default: 'us',
     },
+    host: {
+      type: 'string',
+      required: false,
+      visibility: 'user-only',
+      description:
+        'Self-hosted PostHog instance host (e.g., "posthog.mycompany.com"). Overrides the region setting when provided.',
+    },
     projectId: {
       type: 'string',
       required: true,
@@ -83,7 +93,7 @@ export const listPersonsTool: ToolConfig<PostHogListPersonsParams, PostHogListPe
 
   request: {
     url: (params) => {
-      const baseUrl = params.region === 'eu' ? 'https://eu.posthog.com' : 'https://us.posthog.com'
+      const baseUrl = getPostHogAppBaseUrl(params.region, params.host)
       const url = new URL(`${baseUrl}/api/projects/${params.projectId}/persons/`)
 
       if (params.limit) url.searchParams.append('limit', params.limit.toString())
@@ -101,17 +111,6 @@ export const listPersonsTool: ToolConfig<PostHogListPersonsParams, PostHogListPe
   },
 
   transformResponse: async (response: Response) => {
-    if (!response.ok) {
-      const error = await response.text()
-      return {
-        success: false,
-        output: {
-          persons: [],
-        },
-        error: error || 'Failed to list persons',
-      }
-    }
-
     const data = await response.json()
 
     return {
diff --git a/apps/sim/tools/posthog/list_projects.ts b/apps/sim/tools/posthog/list_projects.ts
index b3b227cc431..6c7493520b8 100644
--- a/apps/sim/tools/posthog/list_projects.ts
+++ b/apps/sim/tools/posthog/list_projects.ts
@@ -1,8 +1,10 @@
+import { getPostHogAppBaseUrl } from '@/tools/posthog/utils'
 import type { ToolConfig } from '@/tools/types'
 
 export interface PostHogListProjectsParams {
   apiKey: string
   region?: 'us' | 'eu'
+  host?: string
 }
 
 interface PostHogProject {
@@ -39,6 +41,7 @@ export const listProjectsTool: ToolConfig<PostHogListProjectsParams, PostHogList
     description:
       'List all projects in the organization. Returns project details including IDs, names, API tokens, and settings. Useful for getting project IDs needed by other endpoints.',
     version: '1.0.0',
+    errorExtractor: 'posthog-errors',
 
     params: {
       apiKey: {
@@ -53,11 +56,18 @@ export const listProjectsTool: ToolConfig<PostHogListProjectsParams, PostHogList
         visibility: 'user-only',
         description: 'Cloud region: us or eu (default: us)',
       },
+      host: {
+        type: 'string',
+        required: false,
+        visibility: 'user-only',
+        description:
+          'Self-hosted PostHog instance host (e.g., "posthog.mycompany.com"). Overrides the region setting when provided.',
+      },
     },
 
     request: {
       url: (params) => {
-        const baseUrl = params.region === 'eu' ? 'https://eu.posthog.com' : 'https://us.posthog.com'
+        const baseUrl = getPostHogAppBaseUrl(params.region, params.host)
         return `${baseUrl}/api/projects/`
       },
       method: 'GET',
@@ -73,7 +83,7 @@ export const listProjectsTool: ToolConfig<PostHogListProjectsParams, PostHogList
       return {
         success: true,
         output: {
-          projects: data.results.map((project: any) => ({
+          projects: (data.results || []).map((project: any) => ({
             id: project.id,
             uuid: project.uuid,
             organization: project.organization,
diff --git a/apps/sim/tools/posthog/list_property_definitions.ts b/apps/sim/tools/posthog/list_property_definitions.ts
index 28e9eb47f57..f921c0efc9e 100644
--- a/apps/sim/tools/posthog/list_property_definitions.ts
+++ b/apps/sim/tools/posthog/list_property_definitions.ts
@@ -1,13 +1,15 @@
+import { getPostHogAppBaseUrl } from '@/tools/posthog/utils'
 import type { ToolConfig } from '@/tools/types'
 
 interface PostHogListPropertyDefinitionsParams {
   projectId: string
   region: 'us' | 'eu'
+  host?: string
   apiKey: string
   limit?: number
   offset?: number
   search?: string
-  type?: 'event' | 'person' | 'group'
+  type?: 'event' | 'person' | 'group' | 'session'
 }
 
 interface PropertyDefinition {
@@ -18,9 +20,7 @@ interface PropertyDefinition {
   is_numerical: boolean
   is_seen_on_filtered_events: boolean | null
   property_type: string
-  type: 'event' | 'person' | 'group'
-  volume_30_day: number | null
-  query_usage_30_day: number | null
+  type: 'event' | 'person' | 'group' | 'session'
   created_at: string
   updated_at: string
   updated_by: {
@@ -48,6 +48,7 @@ export const listPropertyDefinitionsTool: ToolConfig<
   description:
     'List all property definitions in a PostHog project. Property definitions represent tracked properties with metadata like descriptions, tags, types, and usage statistics.',
   version: '1.0.0',
+  errorExtractor: 'posthog-errors',
 
   params: {
     projectId: {
@@ -62,6 +63,13 @@ export const listPropertyDefinitionsTool: ToolConfig<
       visibility: 'user-only',
       description: 'PostHog cloud region: us or eu',
     },
+    host: {
+      type: 'string',
+      required: false,
+      visibility: 'user-only',
+      description:
+        'Self-hosted PostHog instance host (e.g., "posthog.mycompany.com"). Overrides the region setting when provided.',
+    },
     apiKey: {
       type: 'string',
       required: true,
@@ -96,7 +104,7 @@ export const listPropertyDefinitionsTool: ToolConfig<
 
   request: {
     url: (params) => {
-      const baseUrl = params.region === 'eu' ? 'https://eu.posthog.com' : 'https://us.posthog.com'
+      const baseUrl = getPostHogAppBaseUrl(params.region, params.host)
       const queryParams = new URLSearchParams()
 
       if (params.limit) queryParams.append('limit', params.limit.toString())
@@ -130,8 +138,6 @@ export const listPropertyDefinitionsTool: ToolConfig<
         is_seen_on_filtered_events: property.is_seen_on_filtered_events ?? null,
         property_type: property.property_type,
         type: property.type,
-        volume_30_day: property.volume_30_day ?? null,
-        query_usage_30_day: property.query_usage_30_day ?? null,
         created_at: property.created_at,
         updated_at: property.updated_at,
         updated_by: property.updated_by ?? null,
@@ -171,17 +177,7 @@ export const listPropertyDefinitionsTool: ToolConfig<
             optional: true,
           },
           property_type: { type: 'string', description: 'The data type of the property' },
-          type: { type: 'string', description: 'Property type: event, person, or group' },
-          volume_30_day: {
-            type: 'number',
-            description: 'Number of times property was seen in the last 30 days',
-            optional: true,
-          },
-          query_usage_30_day: {
-            type: 'number',
-            description: 'Number of times this property was queried in the last 30 days',
-            optional: true,
-          },
+          type: { type: 'string', description: 'Property type: event, person, group, or session' },
           created_at: {
             type: 'string',
             description: 'ISO timestamp when the property was created',
diff --git a/apps/sim/tools/posthog/list_recording_playlists.ts b/apps/sim/tools/posthog/list_recording_playlists.ts
index dfb2561dbad..e1addcdb1ba 100644
--- a/apps/sim/tools/posthog/list_recording_playlists.ts
+++ b/apps/sim/tools/posthog/list_recording_playlists.ts
@@ -1,9 +1,11 @@
+import { getPostHogAppBaseUrl } from '@/tools/posthog/utils'
 import type { ToolConfig } from '@/tools/types'
 
 interface PostHogListRecordingPlaylistsParams {
   apiKey: string
   projectId: string
   region?: 'us' | 'eu'
+  host?: string
   limit?: number
   offset?: number
 }
@@ -47,6 +49,7 @@ export const listRecordingPlaylistsTool: ToolConfig<
   description:
     'List session recording playlists in a PostHog project. Playlists allow you to organize and curate session recordings.',
   version: '1.0.0',
+  errorExtractor: 'posthog-errors',
 
   params: {
     apiKey: {
@@ -68,6 +71,13 @@ export const listRecordingPlaylistsTool: ToolConfig<
       description: 'PostHog cloud region: us or eu (default: us)',
       default: 'us',
     },
+    host: {
+      type: 'string',
+      required: false,
+      visibility: 'user-only',
+      description:
+        'Self-hosted PostHog instance host (e.g., "posthog.mycompany.com"). Overrides the region setting when provided.',
+    },
     limit: {
       type: 'number',
       required: false,
@@ -84,7 +94,7 @@ export const listRecordingPlaylistsTool: ToolConfig<
 
   request: {
     url: (params) => {
-      const baseUrl = params.region === 'eu' ? 'https://eu.posthog.com' : 'https://us.posthog.com'
+      const baseUrl = getPostHogAppBaseUrl(params.region, params.host)
       const url = new URL(
         `${baseUrl}/api/projects/${params.projectId}/session_recording_playlists/`
       )
diff --git a/apps/sim/tools/posthog/list_session_recordings.ts b/apps/sim/tools/posthog/list_session_recordings.ts
index d0967e7c292..0e7eb433a1e 100644
--- a/apps/sim/tools/posthog/list_session_recordings.ts
+++ b/apps/sim/tools/posthog/list_session_recordings.ts
@@ -1,9 +1,11 @@
+import { getPostHogAppBaseUrl } from '@/tools/posthog/utils'
 import type { ToolConfig } from '@/tools/types'
 
 interface PostHogListSessionRecordingsParams {
   apiKey: string
   projectId: string
   region?: 'us' | 'eu'
+  host?: string
   limit?: number
   offset?: number
 }
@@ -48,6 +50,7 @@ export const listSessionRecordingsTool: ToolConfig<
   description:
     'List session recordings in a PostHog project. Session recordings capture user interactions with your application.',
   version: '1.0.0',
+  errorExtractor: 'posthog-errors',
 
   params: {
     apiKey: {
@@ -69,6 +72,13 @@ export const listSessionRecordingsTool: ToolConfig<
       description: 'PostHog cloud region: us or eu (default: us)',
       default: 'us',
     },
+    host: {
+      type: 'string',
+      required: false,
+      visibility: 'user-only',
+      description:
+        'Self-hosted PostHog instance host (e.g., "posthog.mycompany.com"). Overrides the region setting when provided.',
+    },
     limit: {
       type: 'number',
       required: false,
@@ -85,7 +95,7 @@ export const listSessionRecordingsTool: ToolConfig<
 
   request: {
     url: (params) => {
-      const baseUrl = params.region === 'eu' ? 'https://eu.posthog.com' : 'https://us.posthog.com'
+      const baseUrl = getPostHogAppBaseUrl(params.region, params.host)
       const url = new URL(`${baseUrl}/api/projects/${params.projectId}/session_recordings/`)
 
       if (params.limit) {
diff --git a/apps/sim/tools/posthog/list_surveys.ts b/apps/sim/tools/posthog/list_surveys.ts
index bb4d57cfaf7..4ea049f0b60 100644
--- a/apps/sim/tools/posthog/list_surveys.ts
+++ b/apps/sim/tools/posthog/list_surveys.ts
@@ -1,9 +1,11 @@
+import { getPostHogAppBaseUrl } from '@/tools/posthog/utils'
 import type { ToolConfig } from '@/tools/types'
 
 interface PostHogListSurveysParams {
   apiKey: string
   projectId: string
   region?: 'us' | 'eu'
+  host?: string
   limit?: number
   offset?: number
 }
@@ -45,6 +47,7 @@ export const listSurveysTool: ToolConfig<PostHogListSurveysParams, PostHogListSu
   description:
     'List all surveys in a PostHog project. Surveys allow you to collect feedback from users.',
   version: '1.0.0',
+  errorExtractor: 'posthog-errors',
 
   params: {
     apiKey: {
@@ -66,6 +69,13 @@ export const listSurveysTool: ToolConfig<PostHogListSurveysParams, PostHogListSu
       description: 'PostHog cloud region: us or eu (default: us)',
       default: 'us',
     },
+    host: {
+      type: 'string',
+      required: false,
+      visibility: 'user-only',
+      description:
+        'Self-hosted PostHog instance host (e.g., "posthog.mycompany.com"). Overrides the region setting when provided.',
+    },
     limit: {
       type: 'number',
       required: false,
@@ -82,7 +92,7 @@ export const listSurveysTool: ToolConfig<PostHogListSurveysParams, PostHogListSu
 
   request: {
     url: (params) => {
-      const baseUrl = params.region === 'eu' ? 'https://eu.posthog.com' : 'https://us.posthog.com'
+      const baseUrl = getPostHogAppBaseUrl(params.region, params.host)
       const url = new URL(`${baseUrl}/api/projects/${params.projectId}/surveys/`)
 
       if (params.limit) {
diff --git a/apps/sim/tools/posthog/query.ts b/apps/sim/tools/posthog/query.ts
index 050dd81f14e..ae9fed885f5 100644
--- a/apps/sim/tools/posthog/query.ts
+++ b/apps/sim/tools/posthog/query.ts
@@ -1,8 +1,10 @@
+import { getPostHogAppBaseUrl } from '@/tools/posthog/utils'
 import type { ToolConfig } from '@/tools/types'
 
 export interface PostHogQueryParams {
   apiKey: string
   region?: 'us' | 'eu'
+  host?: string
   projectId: string
   query: string
   values?: string
@@ -25,6 +27,7 @@ export const queryTool: ToolConfig<PostHogQueryParams, PostHogQueryResponse> = {
   description:
     "Execute a HogQL query in PostHog. HogQL is PostHog's SQL-like query language for analytics. Use this for advanced data retrieval and analysis.",
   version: '1.0.0',
+  errorExtractor: 'posthog-errors',
 
   params: {
     apiKey: {
@@ -40,6 +43,13 @@ export const queryTool: ToolConfig<PostHogQueryParams, PostHogQueryResponse> = {
       description: 'PostHog region: us (default) or eu',
       default: 'us',
     },
+    host: {
+      type: 'string',
+      required: false,
+      visibility: 'user-only',
+      description:
+        'Self-hosted PostHog instance host (e.g., "posthog.mycompany.com"). Overrides the region setting when provided.',
+    },
     projectId: {
       type: 'string',
       required: true,
@@ -64,7 +74,7 @@ export const queryTool: ToolConfig<PostHogQueryParams, PostHogQueryResponse> = {
 
   request: {
     url: (params) => {
-      const baseUrl = params.region === 'eu' ? 'https://eu.posthog.com' : 'https://us.posthog.com'
+      const baseUrl = getPostHogAppBaseUrl(params.region, params.host)
       return `${baseUrl}/api/projects/${params.projectId}/query/`
     },
     method: 'POST',
@@ -101,17 +111,6 @@ export const queryTool: ToolConfig<PostHogQueryParams, PostHogQueryResponse> = {
   },
 
   transformResponse: async (response: Response) => {
-    if (!response.ok) {
-      const error = await response.text()
-      return {
-        success: false,
-        output: {
-          results: [],
-        },
-        error: error || 'Failed to execute query',
-      }
-    }
-
     const data = await response.json()
 
     return {
diff --git a/apps/sim/tools/posthog/types.ts b/apps/sim/tools/posthog/types.ts
index a7a9e046a8c..1afc97ade3a 100644
--- a/apps/sim/tools/posthog/types.ts
+++ b/apps/sim/tools/posthog/types.ts
@@ -158,8 +158,6 @@ interface PostHogEventDefinition {
   name: string
   description: string
   tags: string[]
-  volume_30_day?: number
-  query_usage_30_day?: number
   created_at: string
   last_seen_at?: string
   verified: boolean
@@ -172,8 +170,6 @@ interface PostHogPropertyDefinition {
   tags: string[]
   is_numerical: boolean
   property_type: 'DateTime' | 'String' | 'Numeric' | 'Boolean'
-  volume_30_day?: number
-  query_usage_30_day?: number
   verified: boolean
 }
 
diff --git a/apps/sim/tools/posthog/update_cohort.ts b/apps/sim/tools/posthog/update_cohort.ts
new file mode 100644
index 00000000000..d2cd36b220f
--- /dev/null
+++ b/apps/sim/tools/posthog/update_cohort.ts
@@ -0,0 +1,245 @@
+import { getErrorMessage } from '@sim/utils/errors'
+import { getPostHogAppBaseUrl } from '@/tools/posthog/utils'
+import type { ToolConfig } from '@/tools/types'
+
+interface PostHogUpdateCohortParams {
+  apiKey: string
+  projectId: string
+  cohortId: string
+  region?: 'us' | 'eu'
+  host?: string
+  name?: string
+  description?: string
+  filters?: string
+  query?: string
+  isStatic?: boolean
+  groups?: string
+  deleted?: boolean
+}
+
+interface PostHogUpdateCohortResponse {
+  success: boolean
+  output: {
+    id: number
+    name: string
+    description: string
+    groups: Array<Record<string, any>>
+    deleted: boolean
+    filters: Record<string, any>
+    query: Record<string, any> | null
+    created_at: string
+    is_calculating: boolean
+    count: number
+    is_static: boolean
+    version: number
+  }
+}
+
+export const updateCohortTool: ToolConfig<PostHogUpdateCohortParams, PostHogUpdateCohortResponse> =
+  {
+    id: 'posthog_update_cohort',
+    name: 'PostHog Update Cohort',
+    description:
+      'Update an existing cohort in PostHog. Can modify name, description, filters, query, static membership, and deleted status.',
+    version: '1.0.0',
+    errorExtractor: 'posthog-errors',
+
+    params: {
+      apiKey: {
+        type: 'string',
+        required: true,
+        visibility: 'user-only',
+        description: 'PostHog Personal API Key',
+      },
+      projectId: {
+        type: 'string',
+        required: true,
+        visibility: 'user-or-llm',
+        description: 'The PostHog project ID (e.g., "12345" or project UUID)',
+      },
+      cohortId: {
+        type: 'string',
+        required: true,
+        visibility: 'user-or-llm',
+        description: 'The cohort ID to update (e.g., "42")',
+      },
+      region: {
+        type: 'string',
+        required: false,
+        visibility: 'user-only',
+        description: 'PostHog cloud region: "us" or "eu" (default: "us")',
+        default: 'us',
+      },
+      host: {
+        type: 'string',
+        required: false,
+        visibility: 'user-only',
+        description:
+          'Self-hosted PostHog instance host (e.g., "posthog.mycompany.com"). Overrides the region setting when provided.',
+      },
+      name: {
+        type: 'string',
+        required: false,
+        visibility: 'user-or-llm',
+        description: 'Updated name for the cohort',
+      },
+      description: {
+        type: 'string',
+        required: false,
+        visibility: 'user-or-llm',
+        description: 'Updated description of the cohort',
+      },
+      filters: {
+        type: 'string',
+        required: false,
+        visibility: 'user-or-llm',
+        description: 'JSON string of updated filter configuration for the cohort',
+      },
+      query: {
+        type: 'string',
+        required: false,
+        visibility: 'user-or-llm',
+        description: 'JSON string of updated query configuration for the cohort',
+      },
+      isStatic: {
+        type: 'boolean',
+        required: false,
+        visibility: 'user-or-llm',
+        description: 'Whether the cohort is static',
+      },
+      groups: {
+        type: 'string',
+        required: false,
+        visibility: 'user-or-llm',
+        description: 'JSON string of updated groups that define the cohort',
+      },
+      deleted: {
+        type: 'boolean',
+        required: false,
+        visibility: 'user-or-llm',
+        description: 'Set to true to archive (soft-delete) the cohort',
+      },
+    },
+
+    request: {
+      url: (params) => {
+        const baseUrl = getPostHogAppBaseUrl(params.region, params.host)
+        return `${baseUrl}/api/projects/${params.projectId}/cohorts/${params.cohortId}/`
+      },
+      method: 'PATCH',
+      headers: (params) => ({
+        'Content-Type': 'application/json',
+        Authorization: `Bearer ${params.apiKey}`,
+      }),
+      body: (params) => {
+        const body: Record<string, any> = {}
+
+        if (params.name !== undefined) body.name = params.name
+        if (params.description !== undefined) body.description = params.description
+
+        if (params.filters) {
+          try {
+            body.filters = JSON.parse(params.filters)
+          } catch (error) {
+            throw new Error(`Invalid filters JSON: ${getErrorMessage(error)}`)
+          }
+        }
+
+        if (params.query) {
+          try {
+            body.query = JSON.parse(params.query)
+          } catch (error) {
+            throw new Error(`Invalid query JSON: ${getErrorMessage(error)}`)
+          }
+        }
+
+        if (params.isStatic !== undefined) body.is_static = params.isStatic
+
+        if (params.groups) {
+          try {
+            body.groups = JSON.parse(params.groups)
+          } catch (error) {
+            throw new Error(`Invalid groups JSON: ${getErrorMessage(error)}`)
+          }
+        }
+
+        if (params.deleted !== undefined) body.deleted = params.deleted
+
+        return body
+      },
+    },
+
+    transformResponse: async (response: Response) => {
+      const data = await response.json()
+
+      return {
+        success: true,
+        output: {
+          id: data.id,
+          name: data.name || '',
+          description: data.description || '',
+          groups: data.groups || [],
+          deleted: data.deleted || false,
+          filters: data.filters || {},
+          query: data.query || null,
+          created_at: data.created_at,
+          is_calculating: data.is_calculating || false,
+          count: data.count || 0,
+          is_static: data.is_static || false,
+          version: data.version || 0,
+        },
+      }
+    },
+
+    outputs: {
+      id: {
+        type: 'number',
+        description: 'Unique identifier for the cohort',
+      },
+      name: {
+        type: 'string',
+        description: 'Name of the cohort',
+      },
+      description: {
+        type: 'string',
+        description: 'Description of the cohort',
+      },
+      groups: {
+        type: 'array',
+        description: 'Groups that define the cohort',
+      },
+      deleted: {
+        type: 'boolean',
+        description: 'Whether the cohort is deleted',
+      },
+      filters: {
+        type: 'object',
+        description: 'Filter configuration for the cohort',
+      },
+      query: {
+        type: 'object',
+        description: 'Query configuration for the cohort',
+        optional: true,
+      },
+      created_at: {
+        type: 'string',
+        description: 'ISO timestamp when cohort was created',
+      },
+      is_calculating: {
+        type: 'boolean',
+        description: 'Whether the cohort is being calculated',
+      },
+      count: {
+        type: 'number',
+        description: 'Number of users in the cohort',
+      },
+      is_static: {
+        type: 'boolean',
+        description: 'Whether the cohort is static',
+      },
+      version: {
+        type: 'number',
+        description: 'Version number of the cohort',
+      },
+    },
+  }
diff --git a/apps/sim/tools/posthog/update_event_definition.ts b/apps/sim/tools/posthog/update_event_definition.ts
index 34ad2fe130d..3ca149cd0e6 100644
--- a/apps/sim/tools/posthog/update_event_definition.ts
+++ b/apps/sim/tools/posthog/update_event_definition.ts
@@ -1,9 +1,11 @@
+import { getPostHogAppBaseUrl } from '@/tools/posthog/utils'
 import type { ToolConfig } from '@/tools/types'
 
 interface PostHogUpdateEventDefinitionParams {
   projectId: string
   eventDefinitionId: string
   region: 'us' | 'eu'
+  host?: string
   apiKey: string
   description?: string
   tags?: string
@@ -15,8 +17,6 @@ interface EventDefinition {
   name: string
   description: string
   tags: string[]
-  volume_30_day: number | null
-  query_usage_30_day: number | null
   created_at: string
   last_seen_at: string | null
   updated_at: string
@@ -41,6 +41,7 @@ export const updateEventDefinitionTool: ToolConfig<
   description:
     'Update an event definition in PostHog. Can modify description, tags, and verification status to maintain clean event schemas.',
   version: '1.0.0',
+  errorExtractor: 'posthog-errors',
 
   params: {
     projectId: {
@@ -61,6 +62,13 @@ export const updateEventDefinitionTool: ToolConfig<
       visibility: 'user-only',
       description: 'PostHog cloud region: us or eu',
     },
+    host: {
+      type: 'string',
+      required: false,
+      visibility: 'user-only',
+      description:
+        'Self-hosted PostHog instance host (e.g., "posthog.mycompany.com"). Overrides the region setting when provided.',
+    },
     apiKey: {
       type: 'string',
       required: true,
@@ -89,7 +97,7 @@ export const updateEventDefinitionTool: ToolConfig<
 
   request: {
     url: (params) => {
-      const baseUrl = params.region === 'eu' ? 'https://eu.posthog.com' : 'https://us.posthog.com'
+      const baseUrl = getPostHogAppBaseUrl(params.region, params.host)
       return `${baseUrl}/api/projects/${params.projectId}/event_definitions/${params.eventDefinitionId}`
     },
     method: 'PATCH',
@@ -127,8 +135,6 @@ export const updateEventDefinitionTool: ToolConfig<
       name: data.name,
       description: data.description || '',
       tags: data.tags || [],
-      volume_30_day: data.volume_30_day ?? null,
-      query_usage_30_day: data.query_usage_30_day ?? null,
       created_at: data.created_at,
       last_seen_at: data.last_seen_at ?? null,
       updated_at: data.updated_at,
@@ -156,16 +162,6 @@ export const updateEventDefinitionTool: ToolConfig<
       type: 'array',
       description: 'Updated tags associated with the event',
     },
-    volume_30_day: {
-      type: 'number',
-      description: 'Number of events received in the last 30 days',
-      optional: true,
-    },
-    query_usage_30_day: {
-      type: 'number',
-      description: 'Number of times this event was queried in the last 30 days',
-      optional: true,
-    },
     created_at: {
       type: 'string',
       description: 'ISO timestamp when the event was created',
diff --git a/apps/sim/tools/posthog/update_experiment.ts b/apps/sim/tools/posthog/update_experiment.ts
new file mode 100644
index 00000000000..b1090d1922f
--- /dev/null
+++ b/apps/sim/tools/posthog/update_experiment.ts
@@ -0,0 +1,190 @@
+import { getErrorMessage } from '@sim/utils/errors'
+import { getPostHogAppBaseUrl } from '@/tools/posthog/utils'
+import type { ToolConfig } from '@/tools/types'
+
+interface UpdateExperimentParams {
+  projectId: string
+  experimentId: string
+  region?: 'us' | 'eu'
+  host?: string
+  apiKey: string
+  name?: string
+  description?: string
+  parameters?: string
+  filters?: string
+  startDate?: string
+  endDate?: string
+  archived?: boolean
+}
+
+interface Experiment {
+  id: number
+  name: string
+  description: string
+  feature_flag_key: string
+  feature_flag: Record<string, any>
+  parameters: Record<string, any>
+  filters: Record<string, any>
+  start_date: string | null
+  end_date: string | null
+  created_at: string
+  archived: boolean
+}
+
+interface UpdateExperimentResponse {
+  experiment: Experiment
+}
+
+export const updateExperimentTool: ToolConfig<UpdateExperimentParams, UpdateExperimentResponse> = {
+  id: 'posthog_update_experiment',
+  name: 'PostHog Update Experiment',
+  description:
+    'Update an existing experiment in PostHog. Use this to change dates, archive an experiment, or adjust its parameters and filters.',
+  version: '1.0.0',
+  errorExtractor: 'posthog-errors',
+
+  params: {
+    projectId: {
+      type: 'string',
+      required: true,
+      visibility: 'user-or-llm',
+      description: 'The PostHog project ID (e.g., "12345" or project UUID)',
+    },
+    experimentId: {
+      type: 'string',
+      required: true,
+      visibility: 'user-or-llm',
+      description: 'The experiment ID to update (e.g., "42")',
+    },
+    region: {
+      type: 'string',
+      required: false,
+      visibility: 'user-only',
+      description: 'PostHog cloud region: us or eu (default: us)',
+      default: 'us',
+    },
+    host: {
+      type: 'string',
+      required: false,
+      visibility: 'user-only',
+      description:
+        'Self-hosted PostHog instance host (e.g., "posthog.mycompany.com"). Overrides the region setting when provided.',
+    },
+    apiKey: {
+      type: 'string',
+      required: true,
+      visibility: 'user-only',
+      description: 'PostHog Personal API Key',
+    },
+    name: {
+      type: 'string',
+      required: false,
+      visibility: 'user-or-llm',
+      description: 'Updated experiment name',
+    },
+    description: {
+      type: 'string',
+      required: false,
+      visibility: 'user-or-llm',
+      description: 'Updated experiment description',
+    },
+    parameters: {
+      type: 'string',
+      required: false,
+      visibility: 'user-or-llm',
+      description: 'Updated experiment parameters as JSON string',
+    },
+    filters: {
+      type: 'string',
+      required: false,
+      visibility: 'user-or-llm',
+      description: 'Updated experiment filters as JSON string',
+    },
+    startDate: {
+      type: 'string',
+      required: false,
+      visibility: 'user-or-llm',
+      description: 'Updated start date (ISO 8601). Set this to launch a draft experiment.',
+    },
+    endDate: {
+      type: 'string',
+      required: false,
+      visibility: 'user-or-llm',
+      description: 'Updated end date (ISO 8601). Set this to conclude a running experiment.',
+    },
+    archived: {
+      type: 'boolean',
+      required: false,
+      visibility: 'user-or-llm',
+      description: 'Whether to archive the experiment',
+    },
+  },
+
+  request: {
+    url: (params) => {
+      const baseUrl = getPostHogAppBaseUrl(params.region, params.host)
+      return `${baseUrl}/api/projects/${params.projectId}/experiments/${params.experimentId}/`
+    },
+    method: 'PATCH',
+    headers: (params) => ({
+      Authorization: `Bearer ${params.apiKey}`,
+      'Content-Type': 'application/json',
+    }),
+    body: (params) => {
+      const body: Record<string, any> = {}
+
+      if (params.name !== undefined) body.name = params.name
+      if (params.description !== undefined) body.description = params.description
+
+      if (params.parameters) {
+        try {
+          body.parameters = JSON.parse(params.parameters)
+        } catch (error) {
+          throw new Error(`Invalid parameters JSON: ${getErrorMessage(error)}`)
+        }
+      }
+
+      if (params.filters) {
+        try {
+          body.filters = JSON.parse(params.filters)
+        } catch (error) {
+          throw new Error(`Invalid filters JSON: ${getErrorMessage(error)}`)
+        }
+      }
+
+      if (params.startDate !== undefined) body.start_date = params.startDate
+      if (params.endDate !== undefined) body.end_date = params.endDate
+      if (params.archived !== undefined) body.archived = params.archived
+
+      return body
+    },
+  },
+
+  transformResponse: async (response: Response) => {
+    const data = await response.json()
+
+    return {
+      experiment: data,
+    }
+  },
+
+  outputs: {
+    experiment: {
+      type: 'object',
+      description: 'Updated experiment',
+      properties: {
+        id: { type: 'number', description: 'Experiment ID' },
+        name: { type: 'string', description: 'Experiment name' },
+        description: { type: 'string', description: 'Experiment description' },
+        feature_flag_key: { type: 'string', description: 'Associated feature flag key' },
+        feature_flag: { type: 'object', description: 'Feature flag details' },
+        parameters: { type: 'object', description: 'Experiment parameters' },
+        filters: { type: 'object', description: 'Experiment filters' },
+        start_date: { type: 'string', description: 'Start date', optional: true },
+        end_date: { type: 'string', description: 'End date', optional: true },
+        created_at: { type: 'string', description: 'Creation timestamp' },
+        archived: { type: 'boolean', description: 'Whether the experiment is archived' },
+      },
+    },
+  },
+}
diff --git a/apps/sim/tools/posthog/update_feature_flag.ts b/apps/sim/tools/posthog/update_feature_flag.ts
index caef9db2c78..b806357d154 100644
--- a/apps/sim/tools/posthog/update_feature_flag.ts
+++ b/apps/sim/tools/posthog/update_feature_flag.ts
@@ -1,9 +1,12 @@
+import { getErrorMessage } from '@sim/utils/errors'
+import { getPostHogAppBaseUrl } from '@/tools/posthog/utils'
 import type { ToolConfig } from '@/tools/types'
 
 interface UpdateFeatureFlagParams {
   projectId: string
   flagId: string
   region: 'us' | 'eu'
+  host?: string
   apiKey: string
   name?: string
   key?: string
@@ -37,6 +40,7 @@ export const updateFeatureFlagTool: ToolConfig<UpdateFeatureFlagParams, UpdateFe
     name: 'PostHog Update Feature Flag',
     description: 'Update an existing feature flag in PostHog',
     version: '1.0.0',
+    errorExtractor: 'posthog-errors',
 
     params: {
       projectId: {
@@ -57,6 +61,13 @@ export const updateFeatureFlagTool: ToolConfig<UpdateFeatureFlagParams, UpdateFe
         visibility: 'user-only',
         description: 'PostHog cloud region: us or eu',
       },
+      host: {
+        type: 'string',
+        required: false,
+        visibility: 'user-only',
+        description:
+          'Self-hosted PostHog instance host (e.g., "posthog.mycompany.com"). Overrides the region setting when provided.',
+      },
       apiKey: {
         type: 'string',
         required: true,
@@ -103,8 +114,8 @@ export const updateFeatureFlagTool: ToolConfig<UpdateFeatureFlagParams, UpdateFe
 
     request: {
       url: (params) => {
-        const baseUrl = params.region === 'eu' ? 'https://eu.posthog.com' : 'https://us.posthog.com'
-        return `${baseUrl}/api/projects/${params.projectId}/feature_flags/${params.flagId}`
+        const baseUrl = getPostHogAppBaseUrl(params.region, params.host)
+        return `${baseUrl}/api/projects/${params.projectId}/feature_flags/${params.flagId}/`
       },
       method: 'PATCH',
       headers: (params) => ({
@@ -125,8 +136,8 @@ export const updateFeatureFlagTool: ToolConfig<UpdateFeatureFlagParams, UpdateFe
         if (params.filters) {
           try {
             body.filters = JSON.parse(params.filters)
-          } catch {
-            body.filters = {}
+          } catch (error) {
+            throw new Error(`Invalid filters JSON: ${getErrorMessage(error)}`)
           }
         }
 
diff --git a/apps/sim/tools/posthog/update_insight.ts b/apps/sim/tools/posthog/update_insight.ts
new file mode 100644
index 00000000000..f08e9af2424
--- /dev/null
+++ b/apps/sim/tools/posthog/update_insight.ts
@@ -0,0 +1,218 @@
+import { getErrorMessage } from '@sim/utils/errors'
+import { getPostHogAppBaseUrl } from '@/tools/posthog/utils'
+import type { ToolConfig } from '@/tools/types'
+
+interface PostHogUpdateInsightParams {
+  apiKey: string
+  projectId: string
+  insightId: string
+  region?: 'us' | 'eu'
+  host?: string
+  name?: string
+  description?: string
+  query?: string
+  dashboards?: string
+  tags?: string
+  favorited?: boolean
+}
+
+interface PostHogUpdateInsightResponse {
+  success: boolean
+  output: {
+    id: number
+    name: string
+    description: string
+    query: Record<string, any> | null
+    created_at: string
+    last_modified_at: string
+    dashboards: number[]
+    tags: string[]
+    favorited: boolean
+  }
+}
+
+export const updateInsightTool: ToolConfig<
+  PostHogUpdateInsightParams,
+  PostHogUpdateInsightResponse
+> = {
+  id: 'posthog_update_insight',
+  name: 'PostHog Update Insight',
+  description:
+    'Update an existing insight in PostHog. Can modify name, description, query, dashboards, tags, and favorited status.',
+  version: '1.0.0',
+  errorExtractor: 'posthog-errors',
+
+  params: {
+    apiKey: {
+      type: 'string',
+      required: true,
+      visibility: 'user-only',
+      description: 'PostHog Personal API Key',
+    },
+    projectId: {
+      type: 'string',
+      required: true,
+      visibility: 'user-or-llm',
+      description: 'The PostHog project ID (e.g., "12345" or project UUID)',
+    },
+    insightId: {
+      type: 'string',
+      required: true,
+      visibility: 'user-or-llm',
+      description: 'The insight ID to update (e.g., "42" or short ID like "abc123")',
+    },
+    region: {
+      type: 'string',
+      required: false,
+      visibility: 'user-only',
+      description: 'PostHog cloud region: "us" or "eu" (default: "us")',
+      default: 'us',
+    },
+    host: {
+      type: 'string',
+      required: false,
+      visibility: 'user-only',
+      description:
+        'Self-hosted PostHog instance host (e.g., "posthog.mycompany.com"). Overrides the region setting when provided.',
+    },
+    name: {
+      type: 'string',
+      required: false,
+      visibility: 'user-or-llm',
+      description: 'Updated name for the insight',
+    },
+    description: {
+      type: 'string',
+      required: false,
+      visibility: 'user-or-llm',
+      description: 'Updated description for the insight',
+    },
+    query: {
+      type: 'string',
+      required: false,
+      visibility: 'user-or-llm',
+      description: 'JSON string of updated query configuration for the insight',
+    },
+    dashboards: {
+      type: 'string',
+      required: false,
+      visibility: 'user-or-llm',
+      description: 'Comma-separated list of dashboard IDs to attach this insight to',
+    },
+    tags: {
+      type: 'string',
+      required: false,
+      visibility: 'user-or-llm',
+      description: 'Comma-separated list of tags for the insight',
+    },
+    favorited: {
+      type: 'boolean',
+      required: false,
+      visibility: 'user-or-llm',
+      description: 'Whether to mark the insight as favorited',
+    },
+  },
+
+  request: {
+    url: (params) => {
+      const baseUrl = getPostHogAppBaseUrl(params.region, params.host)
+      return `${baseUrl}/api/projects/${params.projectId}/insights/${params.insightId}/`
+    },
+    method: 'PATCH',
+    headers: (params) => ({
+      'Content-Type': 'application/json',
+      Authorization: `Bearer ${params.apiKey}`,
+    }),
+    body: (params) => {
+      const body: Record<string, any> = {}
+
+      if (params.name !== undefined) body.name = params.name
+      if (params.description !== undefined) body.description = params.description
+
+      if (params.query) {
+        try {
+          body.query = JSON.parse(params.query)
+        } catch (error) {
+          throw new Error(`Invalid query JSON: ${getErrorMessage(error)}`)
+        }
+      }
+
+      if (params.dashboards) {
+        body.dashboards = params.dashboards
+          .split(',')
+          .map((id: string) => Number(id.trim()))
+          .filter((id: number) => !Number.isNaN(id))
+      }
+
+      if (params.tags) {
+        body.tags = params.tags
+          .split(',')
+          .map((tag: string) => tag.trim())
+          .filter((tag: string) => tag.length > 0)
+      }
+
+      if (params.favorited !== undefined) body.favorited = params.favorited
+
+      return body
+    },
+  },
+
+  transformResponse: async (response: Response) => {
+    const data = await response.json()
+
+    return {
+      success: true,
+      output: {
+        id: data.id,
+        name: data.name || '',
+        description: data.description || '',
+        query: data.query || null,
+        created_at: data.created_at,
+        last_modified_at: data.last_modified_at,
+        dashboards: data.dashboards || [],
+        tags: data.tags || [],
+        favorited: data.favorited || false,
+      },
+    }
+  },
+
+  outputs: {
+    id: {
+      type: 'number',
+      description: 'Unique identifier for the insight',
+    },
+    name: {
+      type: 'string',
+      description: 'Name of the insight',
+    },
+    description: {
+      type: 'string',
+      description: 'Description of the insight',
+    },
+    query: {
+      type: 'object',
+      description: 'Query configuration for the insight',
+      optional: true,
+    },
+    created_at: {
+      type: 'string',
+      description: 'ISO timestamp when insight was created',
+    },
+    last_modified_at: {
+      type: 'string',
+      description: 'ISO timestamp when insight was last modified',
+    },
+    dashboards: {
+      type: 'array',
+      description: 'IDs of dashboards this insight appears on',
+    },
+    tags: {
+      type: 'array',
+      description: 'Tags associated with the insight',
+    },
+    favorited: {
+      type: 'boolean',
+      description: 'Whether the insight is favorited',
+    },
+  },
+}
diff --git a/apps/sim/tools/posthog/update_property_definition.ts b/apps/sim/tools/posthog/update_property_definition.ts
index bf15e714e5c..c10b8fb6ad5 100644
--- a/apps/sim/tools/posthog/update_property_definition.ts
+++ b/apps/sim/tools/posthog/update_property_definition.ts
@@ -1,9 +1,11 @@
+import { getPostHogAppBaseUrl } from '@/tools/posthog/utils'
 import type { ToolConfig } from '@/tools/types'
 
 interface PostHogUpdatePropertyDefinitionParams {
   projectId: string
   propertyDefinitionId: string
   region: 'us' | 'eu'
+  host?: string
   apiKey: string
   description?: string
   tags?: string
@@ -19,9 +21,7 @@ interface PropertyDefinition {
   is_numerical: boolean
   is_seen_on_filtered_events: boolean | null
   property_type: string
-  type: 'event' | 'person' | 'group'
-  volume_30_day: number | null
-  query_usage_30_day: number | null
+  type: 'event' | 'person' | 'group' | 'session'
   created_at: string
   updated_at: string
   updated_by: {
@@ -34,7 +34,6 @@ interface PropertyDefinition {
   verified: boolean
   verified_at: string | null
   verified_by: string | null
-  example: string | null
 }
 
 export const updatePropertyDefinitionTool: ToolConfig<
@@ -46,6 +45,7 @@ export const updatePropertyDefinitionTool: ToolConfig<
   description:
     'Update a property definition in PostHog. Can modify description, tags, property type, and verification status to maintain clean property schemas.',
   version: '1.0.0',
+  errorExtractor: 'posthog-errors',
 
   params: {
     projectId: {
@@ -66,6 +66,13 @@ export const updatePropertyDefinitionTool: ToolConfig<
       visibility: 'user-only',
       description: 'PostHog cloud region: us or eu',
     },
+    host: {
+      type: 'string',
+      required: false,
+      visibility: 'user-only',
+      description:
+        'Self-hosted PostHog instance host (e.g., "posthog.mycompany.com"). Overrides the region setting when provided.',
+    },
     apiKey: {
       type: 'string',
       required: true,
@@ -100,7 +107,7 @@ export const updatePropertyDefinitionTool: ToolConfig<
 
   request: {
     url: (params) => {
-      const baseUrl = params.region === 'eu' ? 'https://eu.posthog.com' : 'https://us.posthog.com'
+      const baseUrl = getPostHogAppBaseUrl(params.region, params.host)
       return `${baseUrl}/api/projects/${params.projectId}/property_definitions/${params.propertyDefinitionId}`
     },
     method: 'PATCH',
@@ -146,15 +153,12 @@ export const updatePropertyDefinitionTool: ToolConfig<
       is_seen_on_filtered_events: data.is_seen_on_filtered_events ?? null,
       property_type: data.property_type,
       type: data.type,
-      volume_30_day: data.volume_30_day ?? null,
-      query_usage_30_day: data.query_usage_30_day ?? null,
       created_at: data.created_at,
       updated_at: data.updated_at,
       updated_by: data.updated_by ?? null,
       verified: data.verified || false,
       verified_at: data.verified_at ?? null,
       verified_by: data.verified_by ?? null,
-      example: data.example ?? null,
     }
   },
 
@@ -190,17 +194,7 @@ export const updatePropertyDefinitionTool: ToolConfig<
     },
     type: {
       type: 'string',
-      description: 'Property type: event, person, or group',
-    },
-    volume_30_day: {
-      type: 'number',
-      description: 'Number of times property was seen in the last 30 days',
-      optional: true,
-    },
-    query_usage_30_day: {
-      type: 'number',
-      description: 'Number of times this property was queried in the last 30 days',
-      optional: true,
+      description: 'Property type: event, person, group, or session',
     },
     created_at: {
       type: 'string',
@@ -229,10 +223,5 @@ export const updatePropertyDefinitionTool: ToolConfig<
       description: 'User who verified the property',
       optional: true,
     },
-    example: {
-      type: 'string',
-      description: 'Example value for the property',
-      optional: true,
-    },
   },
 }
diff --git a/apps/sim/tools/posthog/update_survey.ts b/apps/sim/tools/posthog/update_survey.ts
index 28fa15f69ad..7b419a21f4d 100644
--- a/apps/sim/tools/posthog/update_survey.ts
+++ b/apps/sim/tools/posthog/update_survey.ts
@@ -1,3 +1,4 @@
+import { getPostHogAppBaseUrl } from '@/tools/posthog/utils'
 import type { ToolConfig } from '@/tools/types'
 
 interface PostHogSurveyQuestion {
@@ -16,6 +17,7 @@ interface PostHogUpdateSurveyParams {
   projectId: string
   surveyId: string
   region?: 'us' | 'eu'
+  host?: string
   name?: string
   description?: string
   type?: 'popover' | 'api'
@@ -62,6 +64,7 @@ export const updateSurveyTool: ToolConfig<PostHogUpdateSurveyParams, PostHogUpda
     description:
       'Update an existing survey in PostHog. Can modify questions, appearance, conditions, and other settings.',
     version: '1.0.0',
+    errorExtractor: 'posthog-errors',
 
     params: {
       apiKey: {
@@ -89,6 +92,13 @@ export const updateSurveyTool: ToolConfig<PostHogUpdateSurveyParams, PostHogUpda
         description: 'PostHog cloud region: us or eu (default: us)',
         default: 'us',
       },
+      host: {
+        type: 'string',
+        required: false,
+        visibility: 'user-only',
+        description:
+          'Self-hosted PostHog instance host (e.g., "posthog.mycompany.com"). Overrides the region setting when provided.',
+      },
       name: {
         type: 'string',
         required: false,
@@ -166,7 +176,7 @@ export const updateSurveyTool: ToolConfig<PostHogUpdateSurveyParams, PostHogUpda
 
     request: {
       url: (params) => {
-        const baseUrl = params.region === 'eu' ? 'https://eu.posthog.com' : 'https://us.posthog.com'
+        const baseUrl = getPostHogAppBaseUrl(params.region, params.host)
         return `${baseUrl}/api/projects/${params.projectId}/surveys/${params.surveyId}/`
       },
       method: 'PATCH',
diff --git a/apps/sim/tools/posthog/utils.ts b/apps/sim/tools/posthog/utils.ts
new file mode 100644
index 00000000000..0296fe41911
--- /dev/null
+++ b/apps/sim/tools/posthog/utils.ts
@@ -0,0 +1,40 @@
+import { validateExternalUrl } from '@/lib/core/security/input-validation'
+
+/**
+ * Shared PostHog base URL resolution.
+ *
+ * PostHog exposes two host families:
+ * - The "app" REST API (`/api/...`) at `us.posthog.com` / `eu.posthog.com`, authenticated
+ *   with a personal API key.
+ * - The "ingest" API (`/i/v0/e`, `/batch/`, `/flags/`) at `us.i.posthog.com` / `eu.i.posthog.com`,
+ *   authenticated with a project API key.
+ *
+ * Self-hosted PostHog instances serve both families from a single custom host. That host is
+ * validated with the shared SSRF guard so it can't be pointed at loopback/private/link-local
+ * addresses (e.g. cloud instance-metadata endpoints); the tool executor additionally
+ * re-validates with DNS resolution and pins the resolved IP for the actual request.
+ */
+
+export function getPostHogAppBaseUrl(region?: 'us' | 'eu', host?: string): string {
+  if (host?.trim()) {
+    return normalizeHost(host)
+  }
+  return region === 'eu' ? 'https://eu.posthog.com' : 'https://us.posthog.com'
+}
+
+export function getPostHogIngestBaseUrl(region?: 'us' | 'eu', host?: string): string {
+  if (host?.trim()) {
+    return normalizeHost(host)
+  }
+  return region === 'eu' ? 'https://eu.i.posthog.com' : 'https://us.i.posthog.com'
+}
+
+function normalizeHost(host: string): string {
+  const trimmed = host.trim().replace(/\/+$/, '')
+  const withProtocol = /^https?:\/\//i.test(trimmed) ? trimmed : `https://${trimmed}`
+  const validation = validateExternalUrl(withProtocol, 'Self-hosted host')
+  if (!validation.isValid) {
+    throw new Error(`${validation.error} (e.g., posthog.mycompany.com)`)
+  }
+  return withProtocol
+}
diff --git a/apps/sim/tools/registry.ts b/apps/sim/tools/registry.ts
index f32edc49219..f82ed0e4825 100644
--- a/apps/sim/tools/registry.ts
+++ b/apps/sim/tools/registry.ts
@@ -2624,12 +2624,14 @@ import {
   posthogCaptureEventTool,
   posthogCreateAnnotationTool,
   posthogCreateCohortTool,
+  posthogCreateDashboardTool,
   posthogCreateExperimentTool,
   posthogCreateFeatureFlagTool,
   posthogCreateInsightTool,
   posthogCreateSurveyTool,
   posthogDeleteFeatureFlagTool,
   posthogDeletePersonTool,
+  posthogDeleteSurveyTool,
   posthogEvaluateFlagsTool,
   posthogGetCohortTool,
   posthogGetDashboardTool,
@@ -2659,8 +2661,11 @@ import {
   posthogListSessionRecordingsTool,
   posthogListSurveysTool,
   posthogQueryTool,
+  posthogUpdateCohortTool,
   posthogUpdateEventDefinitionTool,
+  posthogUpdateExperimentTool,
   posthogUpdateFeatureFlagTool,
+  posthogUpdateInsightTool,
   posthogUpdatePropertyDefinitionTool,
   posthogUpdateSurveyTool,
 } from '@/tools/posthog'
@@ -6517,12 +6522,15 @@ export const tools: Record<string, ToolConfig> = {
   posthog_list_insights: posthogListInsightsTool,
   posthog_get_insight: posthogGetInsightTool,
   posthog_create_insight: posthogCreateInsightTool,
+  posthog_update_insight: posthogUpdateInsightTool,
   posthog_list_dashboards: posthogListDashboardsTool,
   posthog_get_dashboard: posthogGetDashboardTool,
+  posthog_create_dashboard: posthogCreateDashboardTool,
   posthog_list_actions: posthogListActionsTool,
   posthog_list_cohorts: posthogListCohortsTool,
   posthog_get_cohort: posthogGetCohortTool,
   posthog_create_cohort: posthogCreateCohortTool,
+  posthog_update_cohort: posthogUpdateCohortTool,
   posthog_list_annotations: posthogListAnnotationsTool,
   posthog_create_annotation: posthogCreateAnnotationTool,
   posthog_list_feature_flags: posthogListFeatureFlagsTool,
@@ -6534,10 +6542,12 @@ export const tools: Record<string, ToolConfig> = {
   posthog_list_experiments: posthogListExperimentsTool,
   posthog_get_experiment: posthogGetExperimentTool,
   posthog_create_experiment: posthogCreateExperimentTool,
+  posthog_update_experiment: posthogUpdateExperimentTool,
   posthog_list_surveys: posthogListSurveysTool,
   posthog_get_survey: posthogGetSurveyTool,
   posthog_create_survey: posthogCreateSurveyTool,
   posthog_update_survey: posthogUpdateSurveyTool,
+  posthog_delete_survey: posthogDeleteSurveyTool,
   posthog_list_session_recordings: posthogListSessionRecordingsTool,
   posthog_get_session_recording: posthogGetSessionRecordingTool,
   posthog_list_recording_playlists: posthogListRecordingPlaylistsTool,