Slack MCP
UnknownA community server for the Slack Web API: it authenticates with workspace browser tokens (xoxc/xoxd) or a bot token (xoxb), so it skips Slack's app-approval process entirely. 18 tools cover channel and thread history, message search, posting, reactions, user groups and direct messages. Used by more than 9,000 active users; Slack's own reference server has been archived.
Why this server
- Browser tokens xoxc/xoxd need no Slack app approval — connect in minutes
- 18 tools: history, search, threads, reactions, user groups and direct messages
- Supports stdio and SSE/HTTP alike — fits both a desktop client and a server deploy
- Over 9,000 active users, but the project isn't affiliated with Slack
Usage examples
Prompt: Find today's messages about the deploy in #incidents
Result: The agent called conversations_history filtered by channel and time, returning the relevant messages with their threads.
Prompt: Post a short release update to #general and react with ✅ once confirmed
Result: The agent called chat_postMessage in #general, then reactions_add with ✅ on the confirmation message.
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