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description Add Trunk's MCP Server to Claude Code

Claude Code (CLI)

CLI setup

Run the following command to add the MCP server configuration. If you want to only enable it for yourself, use --scope user instead.

claude mcp add --transport http trunk https://mcp.trunk.io/mcp --scope project

Once completed, reopen Claude Code.

Alternative: Update MCP configuration

Add the following configuration to your project's .mcp.json file.

{
  "mcpServers": {
    "trunk": {
      "url": "https://mcp.trunk.io/mcp",
      "type": "http"
    }
  }
}

Authentication with OAuth (default)

After the MCP server was added to Claude Code, users need to authorize to communicate with the server. Follow these steps to complete auth.

Step 1: Start Claude Code CLI

In your terminal, run claude .

Step 2: Run the mcp command

Claude Code should recognize that auth is required. Run /mcp to authenticate, select trunk, and hit Enter:

Step 3: Login & authorize

A new webpage will be opened. Log in with your Trunk account and follow the instructions to authorize Claude Code to communicate with the MCP server.

Step 4: Confirm

Follow instructions to get back to Claude Code. A confirmation should be shown:

Authentication successful. Connected to trunk.

With auth completed, Claude Code will be able to fetch the tools exposed by Trunk's MCP server.

Alternative: Authentication with API token

If you are in a CI or headless environment, or prefer not to use the OAuth browser flow, you can authenticate with your Trunk organization API token instead.

Find your token under Settings > API in the Trunk dashboard, then add it to your .mcp.json:

{
  "mcpServers": {
    "trunk": {
      "url": "https://mcp.trunk.io/mcp",
      "type": "http",
      "headers": {
        "Authorization": "Bearer ${TRUNK_API_TOKEN}"
      }
    }
  }
}

Set the TRUNK_API_TOKEN environment variable to your org API token. Claude Code interpolates environment variables in MCP configuration files automatically.