Fix assistant image replay causing Responses API 400s
Cluster 96816. Data as of
Nothing open on GitHub. Fix merged in #97077 on 28 Aug 2026. Check it covers your case.
The short answer
- Known?
- Yes. 3 related items grouped here, 1 issue already closed.
- Fix event
- A fix was merged to main in PR #97077. Check it covers your case. No release data is tracked.
- Tracker
- The maintainers' tracker marks this
resolved, deciding PR #97077. That is separate from the fix event. - Still open
- Nothing open on GitHub.
These members address a bug where assistant-role image parts were incorrectly replayed as input_image in the Responses API, resulting in 400 errors and broken sessions. The fix drops or corrects assistant images during replay to prevent this failure.
Open issues0
Open PRs0
Fixes on record
-
#97077 fix(codex): assistant-history image parts no longer replay as input_image 400s (#96816)
files:
agent/codex_responses_adapter.py,tests/agent/test_codex_responses_adapter.py
1 PR closed without merging
From the close comments: merged via another change 1
-
#96820 fix(codex): drop assistant images from Responses replay · merged via another change →
#97077,#96816
Closed issues · 1
- Closed#96816fix(codex): assistant-role image parts replay as `input_image` → Responses API 400, session bricked
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structural links throughout): every member is connected by structural evidence: shared changed files, or a closing/superseded reference.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
0.67: 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
- #97077
- Closed issues
- 1
- Attempts
- 1 PR closed without merging
- Fix link checked
- 28 Aug 2026