ChatGPT Apps return empty result when used with Codex
Resolved 💬 2 comments Opened Feb 5, 2026 by KKcorps Closed Feb 6, 2026
💡 Likely answer: A maintainer (mzeng-openai, contributor)
responded on this thread — see the highlighted reply below.
What version of Codex CLI is running?
0.96.0
What subscription do you have?
Plus
Which model were you using?
gpt-5.2-codex
What platform is your computer?
Darwin 25.2.0 arm64 arm
What terminal emulator and version are you using (if applicable)?
Ghostty
What issue are you seeing?
Before 0.96.0, when I was using Slack chatgpt app in my codex cli using $slack, I was getting results
However, post this update, I always get empty results. The codex_app mcp tool call works fine but returns empty json
I checked ChatGPT webapp and the slack app works perfectly there so it is not related to auth
What steps can reproduce the bug?
- Connect Slack as an App to ChatGPT
- Enable /apps experimental feature in Codex CLI
- Restart codex CLI
- Use $slack along with request 'provide latest messages for me'
What is the expected behavior?
It should return list of N messages for you
Additional information
_No response_
2 Comments
Are you able to call other slack actions or other apps without this problem?
It has started working again post 0.98.0 upgrade so closing this for now. I think it might be some flaky issue due to 5.3 codex upgrade going on