Duplicate tool call_id across turns causes 400 errors
Cluster 102629. Data as of
Nothing open on GitHub. Fix merged in #111443 on 15 Sep 2026. Check it covers your case.
The short answer
- Known?
- Yes. 4 related items grouped here, 1 issue already closed.
- Fix event
- A fix was merged to main in PR #111443. Check it covers your case. No release data is tracked.
- Tracker
- The maintainers' tracker marks this
resolved, deciding PR #111443. That is separate from the fix event. - Still open
- Nothing open on GitHub.
A bug where replayed tool call_ids recurring across conversation turns trigger 400 errors due to duplicate function_call_output entries. Multiple fixes address uniquifying these call_ids to prevent the conflict.
Open issues0
Open PRs0
Fixes on record
-
#111443 fix(codex): replayed tool call_ids that recur across turns no longer 400 with duplicate function_call_output (#102629, #111231, salvage #102634)
files:
agent/codex_responses_adapter.py,tests/agent/test_codex_responses_adapter.py
2 PRs closed without merging
From the close comments: done elsewhere 1 · superseded by another PR 1
Closed issues · 1
- Closed#102629[BUG] codex: duplicate stored tool call_id across turns bricks every Responses request with 400
How this cluster was grouped
-
Link evidence (
structural links throughout): every member is connected by structural evidence: shared changed files, or a closing/superseded reference. -
Pairwise link density
0.50: the share of item pairs that carry a link, counting a structural link in full and a relevance-only link at 0.36.1.00means every pair is linked.
Pick up a Lab task
Check whether a fix covers the open issues here, with your own agent. Bring back evidence for maintainers.
Open the LabAt a glance
- Merged PRs
- #111443
- Closed issues
- 1
- Attempts
- 2 PRs closed without merging
- Fix link checked
- 15 Sep 2026