mason: prune dangling tool calls when replaying OpenAI session history - #551
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mason: prune dangling tool calls when replaying OpenAI session history#551elainewang-db wants to merge 1 commit into
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When a run interrupts for human approval, the Agents SDK persists the `function_call` item immediately but writes its matching `function_call_output` only on resume. If that resume never lands cleanly — the user declines, or the paused in-process RunState is lost to a restart or another replica so the next prompt starts a fresh turn — the transcript keeps a `function_call` with no output. Replaying it makes the Responses API reject the whole request with BAD_REQUEST for the dangling `call_id`. Wrap every session (durable and in-memory) so `get_items` drops unpaired tool calls/outputs on replay; writes and rollback pass through unchanged. (A plain tool exception does NOT trigger this — the SDK stores an error output as a matched pair; verified via an end-to-end HITL-interrupt test.) Co-authored-by: Isaac <no-reply@databricks.com>
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A run that dies during or right after a tool call persists the
function_callitem without its matchingfunction_call_output, so the next turn replays a danglingcall_idand the Responses API rejects the whole request with BAD_REQUEST. Wrap every session (durable and in-memory) soget_itemsdrops unpaired tool calls/outputs on replay; writes and rollback pass through unchanged.