AugmentClaude
OfficialMCP server · httpRequires credentials

💬Slack

By Slack

Slack's official hosted MCP server. Gives Claude access to your workspace — search messages and channels, send messages, work with canvases, and look up people — over a secure OAuth connection. Nothing to self-host and no tokens to manage.

Installation

Before you start
  1. Check with your Slack workspace admin that the Slack MCP integration is approved for your workspace (many already allow it).
  2. Install using either option below, then complete the OAuth sign-in in your browser when prompted — no tokens, no bots to create.
  1. Make sure Claude is on your device and in your terminal.

    MCP servers register with Claude Code via claude mcp add. You need Claude Code installed first:

    npm i -g @anthropic-ai/claude-code
  2. Pick a mode and run its install.
    Option 1Claude Code plugin (easiest)

    Installs Slack's official plugin, which configures the MCP server and walks you through the OAuth sign-in automatically.

    Claude Code plugin (easiest)
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    Option 2Direct MCP add

    Adds the remote server directly. Afterwards run /mcp inside Claude Code and pick slack to sign in to your workspace.

    Direct MCP add
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  3. Configure credentials.

    No API keys — authenticates through Slack's OAuth flow in your browser. Your workspace admin must have the Slack MCP integration approved.

  4. Restart Claude Code.

    Quit and reopen Claude Code so it picks up the new MCP registration. Run /mcp inside Claude Code to confirm the server is connected.

  5. Use it.

    Ask Claude naturally. It will call the server's tools when your request matches one. Tool calls show up inline so you can see exactly what Claude is doing.

Prefer to read the source first? Open on GitHub.