Cairn
NousResearch/hermes-agent

Strip reasoning IDs and orphaned message IDs in Responses

Cluster 97442. Data as of

Nothing open on GitHub. Fix merged in #115733 on 19 Sep 2026. Check it covers your case.

The short answer

0open issues
0open PRs
4items grouped
Known?
Yes. 4 related items grouped here, 1 issue already closed.
Fix event
A fix was merged to main in PR #115733. Check it covers your case. No release data is tracked.
Tracker
The maintainers' tracker marks this resolved, deciding PR #115733. That is separate from the fix event.
Still open
Nothing open on GitHub.

These issues and fixes address a bug where replayed messages with stripped reasoning IDs caused 400 errors in the Responses API. The fix involves also stripping associated message item IDs to avoid orphaned references.

Open issues0

No open issues.

Open PRs0

No open pull requests.

Fixes on record

Merged to main. A stamp counts the issues a fix is linked to.

  • #115733 fix(codex): GPT-5.6 Responses continuations no longer 400 on a replayed message whose reasoning id was stripped (#97427, #97442, salvage #97445)

    merged to main

    files: agent/codex_responses_adapter.py, agent/transports/codex.py, contributors/emails/[redacted:email], tests/agent/test_codex_responses_adapter.py, tests/agent/transports/test_codex_transport.py

2 PRs closed without merging

From the close comments: duplicate 1 · merged via another change 1

  • #97445 fix(codex): avoid orphaned Responses message IDs · merged via another change → 4d1d3d0, #115733, #97427, #97442, #97445
  • #102282 codex_responses_adapter: strip message item IDs when reasoning IDs are stripped · duplicate → #97445, #97442
Closed issues · 1
  • Closed#97442[Bug]: GPT-5.6 Responses rejects replayed message after Hermes strips its reasoning ID
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(structural links throughout): every member is connected by structural evidence: shared changed files, or a closing/superseded reference.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. 1.00 means 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 Lab

At a glance

Merged PRs
#115733
Closed issues
1
Attempts
2 PRs closed without merging
Fix link checked
19 Sep 2026

For your agent

The same facts, typed.

cluster/97442.json
cluster/97442.md