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fix: trace system prompt only once per session #287

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Merged
anandgupta42 merged 1 commit into from
Mar 19, 2026
Merged

fix: trace system prompt only once per session #287

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21 changes: 13 additions & 8 deletions packages/opencode/src/session/prompt.ts
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Original file line number Diff line number Diff line change
Expand Up @@ -728,14 +728,19 @@ export namespace SessionPrompt {
system.push(STRUCTURED_OUTPUT_SYSTEM_PROMPT)
}

// altimate_change start - trace system prompt
Tracer.active?.logSpan({
name: "system-prompt",
startTime: Date.now(),
endTime: Date.now(),
input: { agent: agent.name, step },
output: { parts: system.length, content: system.join("\n\n") },
})
// altimate_change start - trace system prompt once per loop() call.
// The system prompt is functionally identical across steps within a single
// loop() invocation (same agent, same environment). Agent switches re-enter
// loop() with step reset to 0, so each agent's prompt is traced separately.
if (step === 1) {
Tracer.active?.logSpan({
name: "system-prompt",
startTime: Date.now(),
endTime: Date.now(),
input: { agent: agent.name, step },
output: { parts: system.length, content: system.join("\n\n") },
})
}
// altimate_change end

const result = await processor.process({
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