Product / UX / Agent tools & protocols

Slack MCP Server

Actively maintained community Slack MCP server (Go) connecting AI agents to Slack workspaces over stdio/SSE/HTTP, with a 'stealth mode' needing no bot install or workspace permissions plus an OAuth mode. Exposes 18 tools (history, search, posting, reactions, channel/user management).

MIT. ~1.7k stars. There is no first-party official Slack MCP server - the original reference server was archived (servers-archived), making this the most popular maintained one.

Openness

5 high confidence

5.0

license: MIT(OSI)
source: public
core-gated: ungated

Fully MIT.

https://github.com/korotovsky/slack-mcp-server recorded 2026-06-17
MIT, ~1.7k stars, v1.3.0

Adoption

2 medium confidence

2.0

~1.7k stars (smaller community project) - stars_fallback.

https://github.com/korotovsky/slack-mcp-server recorded 2026-06-17
~1.7k stars

Capability

4 medium confidence

4.0

Broad Slack read/write surface with an unusual no-permission stealth mode.

https://github.com/korotovsky/slack-mcp-server recorded 2026-06-17
18-tool feature set

Unchanged since 2026-07-30 (last edited, not re-checked)