Codex message ID handling across provider switches
Cluster 92311. Data as of
Nothing open on GitHub. Fix merged in #111181 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 #111181. Check it covers your case. No release data is tracked.
- Tracker
- The maintainers' tracker marks this
resolved, deciding PR #111181. That is separate from the fix event. - Still open
- Nothing open on GitHub.
These issues and fixes concern a bug where Codex sessions break with 400 errors when replaying message IDs from a different provider mid-session, particularly IDs not starting with 'msg'. The work addresses guarding and scoping message IDs correctly when switching providers.
Open issues0
Open PRs0
Fixes on record
-
#111181 Codex Responses replay drops foreign message ids and scopes reasoning replay to the issuing model (#92311, #95834, salvage #92325 #95849)
files:
agent/auxiliary_client.py,agent/codex_responses_adapter.py,agent/error_classifier.py,agent/transports/codex.py,tests/agent/test_codex_responses_adapter.py,tests/agent/test_error_classifier.py,tests/agent/transports/test_codex_transport.py
2 PRs closed without merging
From the close comments: done elsewhere 1 · merged via another change 1
Closed issues · 1
- Closed#92311[Bug]: Codex Responses 400 when replaying foreign input[].id that does not start with msg after mid-session provider switch
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structural links throughout): every member is connected by structural evidence: shared changed files, or a closing/superseded reference.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
- #111181
- Closed issues
- 1
- Attempts
- 2 PRs closed without merging
- Fix link checked
- 15 Sep 2026