Slack for Claude Code

io.github.aaronsb/slack-mcp

Read and write Slack with session tokens — no OAuth, no bot, no admin approval.

client:Claude Code transport:stdio runtime:npm

Install Slack in Claude Code

run in your project directory

claude mcp add slack-mcp -e SLACK_MCP_XOXC_TOKEN=<SLACK_MCP_XOXC_TOKEN> -e SLACK_MCP_XOXD_TOKEN=<SLACK_MCP_XOXD_TOKEN> -- npx -y @aaronsb/slack-mcp

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