Codex App: Invalid schema for function '_create_site' from connected App tool

What happened?

Codex App fails a turn with this error:

Invalid schema for function '_create_site': schema must have type 'object' and not have 'oneOf'/'anyOf'/'allOf'/'enum'/'not' at the top level.

This looks like the same class of issue as #23318, but with a different generated function name (_create_site instead of _search_content). I did not find an existing issue that mentions _create_site specifically.

Environment

• Surface: Codex App / Desktop
• Account type: ChatGPT Enterprise
• Platform: macOS 26.0.1, arm64

Expected behavior

Codex should either normalize/reject the connected App tool schema before sending the request, or clearly identify the affected App/connector so the user can disconnect or reconnect it.

Notes

Screenshot error text is included above. The broad related issue is #23318.

Feedback ID: 019ea716-45cc-76b1-8186-34c5643cadc9