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 March 3rd, 2026.
Impact:
- Customers who installed or reconnected our Slack app after May 29th are experiencing limited rate-limits and their connections was deleted.
- Existing Slack connections remain functional until March 3nd, 2026
- ⚠️ Customers with existing Dust Slack App installations from before May 29, 2025 ****must avoid re-authenticating or reinstalling Dust app as this would subject them to the lower rate limits
- Dust Slack Connection ingestion is temporarily suspended for new customers
- Our response includes splitting our application into separate Slack Bot and Connection components to meet Slack's new requirements
- We are actively working with Slack to list a dedicated application on their marketplace to ensure full functionality of interactions with @dust
What Changed
Slack has introduced new requirements for commercial applications:
- Marketplace Requirement: All commercial apps must be listed on the official Slack Marketplace to maintain full API access
- Rate Limiting: Non-Marketplace apps face drastically reduced rate limits on critical endpoints (
conversations.history and conversations.replies)
- Restricted Use Cases: Slack's updated Marketplace terms prohibit bulk data indexing and enterprise search functionalities
Impact on Dust