Slack
POST /api/assistant.threads.setTitle endpoint removal
Deprecated, no dateSubscribe to SlackShare
Slack deprecated POST /api/assistant.threads.setTitle without giving a shutdown date yet.
Calls it hits
POST /api/assistant.threads.setTitle
What to use instead of these calls
Call agents.sessions.rename instead, moving the app from assistant_view to agent_view (Slack's migration guide).
The replacement comes with moving the app from the Assistant to the Agent messaging experience, a change of what its users see.
In Slack's words
The agents.sessions.setStatus and agents.sessions.rename API methods replace the assistant.threads.setStatus and assistant.threads.setTitle API methods, respectively. For now, your existing calls keep working through a compatibility bridge.
Facts
- API
- Slack
slack.com - Kind
- Endpoint removal
- Announced
- August 20, 2026
- Takes effect
- No date given yet
- Calls after that day
- Fail
- Source
- Announcement
- Last updated
- Verified
- , against Slack's own pages
Questions
When does this change take effect?
Slack deprecated POST /api/assistant.threads.setTitle without giving a shutdown date yet.
Do these calls still work?
Yes, they still work: Slack has not given a shutdown date yet.
How do I find the calls this hits in my code?
Okapi reads your repository, finds the calls this change hits and opens a pull request with the fix. It never commits to your branches: every change comes as a pull request you review.
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Is your code calling this?
Okapi finds the calls this change hits in your repo and opens the pull request with the fix.