Codex app-server built-in personality conflict fix
Cluster 72104 · agent. Data as of
Nothing open on GitHub. Fix merged in #115759 on 19 Sep 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 #115759. Check it covers your case. No release data is tracked.
- Tracker
- The maintainers' tracker marks this
resolved, deciding PR #115759. That is separate from the fix event. - Still open
- Nothing open on GitHub.
These items concern a bug where Codex app-server threads inherit an unintended built-in personality, and the corresponding fixes to disable it and ensure the intended system prompt reaches the model.
Open issues0
Open PRs0
Fixes on record
-
#115759 fix(codex_app_server): SOUL.md and the Hermes system prompt reach the model; built-in personality disabled (#74712, #72104, #26035, salvage #74726 #72106 #27998)
files:
agent/codex_runtime.py,agent/transports/codex_app_server_session.py,contributors/emails/[redacted:email],tests/agent/test_codex_app_server_persist.py,tests/agent/test_codex_runtime_prompt_handoff.py,tests/agent/transports/test_codex_app_server_session.py,website/docs/user-guide/features/codex-app-server-runtime.md
1 PR closed without merging
From the close comments: merged via another change 1
-
#72106 fix(codex): disable built-in app-server personality · merged via another change →
85cb1dc,#115759,#74712,#72104,#26035,#74726,#72106,#27998
Closed issues · 1
- Closed#72104[Bug]: Codex app-server threads inherit a competing built-in personality
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structural links throughout): every member is connected by structural evidence: shared changed files, or a closing/superseded reference.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
- Subsystem
- agent
- Merged PRs
- #115759
- Closed issues
- 1
- Attempts
- 1 PR closed without merging
- Fix link checked
- 19 Sep 2026