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mcp/harbor
Verified official

Slack MCP

v0.3.0

io.github.mindstone/mcp-server-slack

Slack MCP server: channels, messages, threads, reactions, users, files, and scheduled messages

transport:stdio runtime:npm
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Target client

run in your project directory

Held in this page only — never stored, logged, or sent anywhere but back to your screen. 

claude mcp add mcp-server-slack -e SLACK_CONFIG_PATH=<SLACK_CONFIG_PATH> -e SLACK_TEAM_ID=<SLACK_TEAM_ID> -e SLACK_CLIENT_ID=<SLACK_CLIENT_ID> -e SLACK_CLIENT_SECRET=<SLACK_CLIENT_SECRET> -e SLACK_DISABLE_REFRESH=<SLACK_DISABLE_REFRESH> -e SLACK_REQUEST_TIMEOUT_MS=<SLACK_REQUEST_TIMEOUT_MS> -e SLACK_MAX_RETRIES=<SLACK_MAX_RETRIES> -e MCP_WORKSPACE_PATH=<MCP_WORKSPACE_PATH> -- npx -y @mindstone/mcp-server-slack

Adds it for this project only. Append --scope user to make it available everywhere. Claude Code docs

This listing does not declare its tools. Connect the server and your client will discover them on the handshake.