It would be really nice if the deprecation toast that appears for about 3 seconds was either: 1. Persisted until the user actually closed it. 2. Was able to be retrieved elsewhere in case the user missed it. I've opened the app 5 times and I am a pretty quick reader.... Given that I wanted multi-agent workflows and cannot get the entire context of this 'collab deprecated notice'. I have to work with another app.

[BUG] collab deprecated

Resolved 💬 4 comments Opened Feb 18, 2026 by GratefulDave Closed Feb 23, 2026

💡 Likely answer: A maintainer (etraut-openai, contributor) responded on this thread — see the highlighted reply below.

It would be really nice if the deprecation toast that appears for about 3 seconds was either:

Persisted until the user actually closed it.
Was able to be retrieved elsewhere in case the user missed it.

I've opened the app 5 times and I am a pretty quick reader.... Given that I wanted multi-agent workflows and cannot get the entire context of this 'collab deprecated notice'. I have to work with another app.

View original on GitHub ↗

4 Comments

miniq15 · 6 months ago

petekp · 6 months ago

Screenshot for reference. I get this alert frequently, particularly when starting a new thread.

'collab' is deprecated. Use ' [features].multi_agent instead. Enable it with '--enable multi_agent' or '[features].multi_agent* in config.toml. See https://github.com/openai/codex/blob/main/docs/config.md#feature-flags for details.

The link in the alert doesn't provide any context or help for this particular issue.

The fix is to replace collab = true in config.toml under the [features] section with multi_agent = true.

Would be helpful if codex automatically patched this or provided the option to.

tmnahum · 6 months ago

make sure to check your root level codex config that's where it was for me

etraut-openai contributor · 6 months ago

This will be fixed in the next release.