Slack connectors overview
Glean uses the Slack Real Time Search (RTS) API as the primary, Slack‑approved method to access messages at query time.
warning
Slack is phasing out older API patterns that underpin legacy indexing‑only Slack connectors. Slack has announced that it will begin rate‑limiting these legacy connectors after March 3, 2026.
Architecture and connection
How Glean connects to Slack
Two-connector model, RTS and Slack connector, and query flow
Architecture overview
Data flow between Slack and Glean when RTS is enabled
Reference
Changes
Hybrid connector best practices
Overview and best practices for deploying the Slack hybrid search connector (RTS + native/custom app)
Slack connector changes
What connectors to setup and how to migrate existing custom instances
Gleanbot impacts and FAQ
How the Slack connector migration affects Gleanbot and answers to common questions