What changed in the Slack API

As of July 2026, we require that apps submitting to the Slack Marketplace have at least 10 installations on active workspaces, up from the temporary lower threshold. Your app needs to stay at 10 or mo

Updated installation requirement for Slack Marketplace apps
Updated installation requirement for Slack Marketplace apps
As of July 2026, we require that apps submitting to the Slack Marketplace have at least 10 installations on active workspaces, up from the temporary lower threshold. Your app needs to stay at 10 or more installed workspaces throughout the 
entire duration of the review

We've fixed the help template so hidden subcommands are no longer listed under their parent command.

Release: Slack CLI v4.7.0
Release: Slack CLI v4.7.0
 of the Slack CLI has been released!
 command, which checks the status of your most recent request to have an app approved for install.
We've added support for custom app icons. The 
 commands can now be used to upload an icon file.
We've fixed the help template so hidden subcommands are no longer listed under their parent command.

Agent updates and the deprecation of

The next wave of Agent messaging experience
The next wave of Agent messaging experience
We're rolling out a wave of updates to agents on Slack, along with an important heads-up about the road ahead for the Assistant messaging experience.
Agent updates and the deprecation of 
The Assistant messaging experience (
. The assistant-related methods that power it are being replaced by a new set of API methods: the 
. Agent sessions let users manage their conversations with your agent in one place, with a status, a title, and a stop button. The 
agents.sessions.setStatus
assistant.threads.setTitle
 API methods, respectively. For now, your existing calls keep working through a compatibility bridge. See the 
The Agent messaging experience (
) is already available, and we recommend moving to it now. If your app still uses 
 to move to the new experience. Read more in the guide to 
Alongside this announcement, we're releasing a set of improvements to the agent experience:
: a newly renamed and revamped 
 tab helps users find popular agents with a new landing page.
Improved thread experience
: including multi-agent stacking, thread naming, a revamped thinking UI, and a native stop button for ag

If you're interested in listing your Slack app in the Slack Marketplace, you'll want to review our new Slack Marketplace Agreement and consider our Security Review Process. Find these and other polici

Migrating to the Agent messaging experience
If you're interested in listing your Slack app in the Slack Marketplace, you'll want to review our new Slack Marketplace Agreement and consider our Security Review Process. Find these and other policies in our new Slack App develop