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The Inbox MCP server gives AI tools direct access to the full REST API — threads, messages, prospects, tags, and more.

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Authentication

The MCP server uses the same API token as the REST API. Pass it in the Authorization header.
Need an API token? See Authentication.

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Server URL

https://mcp.inboxapp.com/mcp

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Client setup

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Claude Desktop

Add to your config file:
  • macOS: ~/Library/Application Support/Claude/claude_desktop_config.json
  • Windows: %APPDATA%\Claude\claude_desktop_config.json
claude_desktop_config.json
{
  "mcpServers": {
    "inbox": {
      "url": "https://mcp.inboxapp.com/mcp",
      "headers": {
        "Authorization": "Bearer <INBOX_API_TOKEN>"
      }
    }
  }
}

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Cursor

Add to .cursor/mcp.json in your project root:
.cursor/mcp.json
{
  "mcpServers": {
    "inbox": {
      "url": "https://mcp.inboxapp.com/mcp",
      "headers": {
        "Authorization": "Bearer <INBOX_API_TOKEN>"
      }
    }
  }
}
Replace <INBOX_API_TOKEN> with your API token.