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fix(agents): skip tool extraction for aborted/errored assistant messages (#4598)

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Fixes tool call/tool_result pairing issues that cause permanent session corruption when assistant messages have stopReason "error" or "aborted". Includes 4 unit tests.
This commit is contained in:
Aisling Cahill
2026-02-06 01:08:46 +01:00
committed by GitHub
parent de7b2ba7d5
commit 861725fba1
2 changed files with 108 additions and 0 deletions
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13
src/agents/session-transcript-repair.ts
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@@ -213,6 +213,19 @@ export function repairToolUseResultPairing(messages: AgentMessage[]): ToolUseRep
}
const assistant = msg as Extract<AgentMessage, { role: "assistant" }>;
// Skip tool call extraction for aborted or errored assistant messages.
// When stopReason is "error" or "aborted", the tool_use blocks may be incomplete
// (e.g., partialJson: true) and should not have synthetic tool_results created.
// Creating synthetic results for incomplete tool calls causes API 400 errors:
// "unexpected tool_use_id found in tool_result blocks"
// See: https://github.com/openclaw/openclaw/issues/4597
const stopReason = (assistant as { stopReason?: string }).stopReason;
if (stopReason === "error" || stopReason === "aborted") {
out.push(msg);
continue;
}
const toolCalls = extractToolCallsFromAssistant(assistant);
if (toolCalls.length === 0) {
out.push(msg);