Last update: July 23, 4pm CET

Executive Summary

On May 29, 2025, Slack implemented significant API changes that affect third-party applications, including Dust's Slack integration. These changes require commercial applications to be listed on the Slack Marketplace to maintain full functionality. Applications not on the Marketplace face severe rate limiting that makes data synchronization impractical.

In particular it moves out of the terms of service any indexation use case (Dust Slack Conection) but maintains within terms of use interactions with external platforms (calling Dust agents from Slack) but requiring the publication on the marketplace of an official Dust for Slack app.

The new limited rate limits for indexation were rolled out immediately to all new app installations and will be effective for all installations September 2nd, 2025.

Impact:

What Changed

Slack has introduced new requirements for commercial applications:

Impact on Dust