MCP CONNECTION GUIDEConnect Slack
Search Slack channels and perform supported workspace actions through Slack’s own MCP server.
Setup evidence reviewed 2026-10-26. Documentation review does not establish a successful connection.
Credentials and permissions
Confidential OAuth with registered Slack app; no dynamic client registration.
Set up your connection
Register a Slack app with a fixed app ID and configure confidential OAuth with your client ID and client secret. Only Slack Marketplace-published or internal apps may use MCP; unlisted apps are not supported. Dynamic client registration and SSE are not supported. Each user authorizes the required scopes; workspace administrators may need to approve the app. Runtime access has not been tested.
Server endpoint
https://mcp.slack.com/mcpTransport: Streamable HTTP
Publisher documentation
Check these sources for current account requirements and client support before connecting.