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slack-mcp-server

MCPOpen source

Powerful MCP server for Slack with stealth mode, OAuth, DMs, smart history, and no permission requirements.

1.8kMIT

The most powerful MCP Slack Server with no permission requirements, Apps support, GovSlack, DMs, Group DMs and smart history fetch logic.

Pros

  • +Stealth mode requires no Slack permissions or bot installation
  • +Supports DMs, group DMs, threads, and smart history fetching
  • +Multiple transports: Stdio, SSE, HTTP, with proxy support
  • +Enterprise Slack and GovSlack support

Cons

  • −Message posting tool disabled by default for safety
  • −Requires Slack API token or OAuth setup
  • −May have learning curve for configuration

Target audience: Developers building AI assistants or automation that need to interact with Slack workspaces via MCP.

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