GPT 5.3 Codex constantly lies about its available tools
Resolved 💬 2 comments Opened Feb 10, 2026 by scalar0 Closed Feb 10, 2026
💡 Likely answer: A maintainer (etraut-openai, contributor)
responded on this thread — see the highlighted reply below.
The following scenario happens maybe 8 sessions out of 10, once context is below 85-90%.
When asked to run simple commands on my rust codebase, like cargo build, GPT 5.3 Codex keeps asking for permissions and when allowed, refuses to, stating it can't run commands via (tool calls) in this turn.
When I confront it to its lies by making it list all available tools in the turn, it repeats the same thing and sometimes ignores new prompts.
GPT 5.2 Codex works as usual.
2 Comments
I followed the link from the
/feedbackcommand but I can't see the uploaded threat. Its id is:019c4966-d1cb-7251-920b-588b60987b58.Thanks for the bug report. We'll share the feedback with the team responsible for training our codex models. We're tracking this feedback and similar reports so we can improve future models. And thanks for using the
/feedbackcommand. That additional information is useful.