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fix: always drop orphaned OpenAI reasoning blocks in session history

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downgradeOpenAIReasoningBlocks was only called on model change, but
orphaned reasoning items (e.g. from an aborted stream) can exist without
a model switch and cause a 400 from the OpenAI Responses API.

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
This commit is contained in:
Ty Sabs
2026-02-16 16:40:17 -06:00
committed by Peter Steinberger
parent e33017982c
commit 46bf210e04
2 changed files with 5 additions and 6 deletions
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4
src/agents/pi-embedded-runner.sanitize-session-history.test.ts
View File

@@ -204,7 +204,7 @@ describe("sanitizeSessionHistory", () => {
expect(result.map((msg) => msg.role)).toEqual(["user"]); expect(result.map((msg) => msg.role)).toEqual(["user"]);
}); });
it("does not downgrade openai reasoning when the model has not changed", async () => { it("downgrades orphaned openai reasoning even when the model has not changed", async () => {
const sessionEntries = [ const sessionEntries = [
makeModelSnapshotEntry({ makeModelSnapshotEntry({
provider: "openai", provider: "openai",
@@ -222,7 +222,7 @@ describe("sanitizeSessionHistory", () => {
sessionManager, sessionManager,
}); });
expect(result).toEqual(messages); expect(result).toEqual([]);
}); });
it("downgrades openai reasoning only when the model changes", async () => { it("downgrades openai reasoning only when the model changes", async () => {

7
src/agents/pi-embedded-runner/google.ts
View File

@@ -457,10 +457,9 @@ export async function sanitizeSessionHistory(params: {
modelId: params.modelId, modelId: params.modelId,
}) })
: false; : false;
const sanitizedOpenAI = const sanitizedOpenAI = isOpenAIResponsesApi
isOpenAIResponsesApi && modelChanged ? downgradeOpenAIReasoningBlocks(sanitizedToolResults)
? downgradeOpenAIReasoningBlocks(sanitizedToolResults) : sanitizedToolResults;
: sanitizedToolResults;
if (hasSnapshot && (!priorSnapshot || modelChanged)) { if (hasSnapshot && (!priorSnapshot || modelChanged)) {
appendModelSnapshot(params.sessionManager, { appendModelSnapshot(params.sessionManager, {