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How to set up the Code Index MCP on CursorAI

Follow these steps to integrate the Code Index MCP with CursorAI and unlock powerful documentation, code search, and agent features directly in your IDE.

Last Updated: May 13, 2025

Open Cursor settings
Navigate to the MCP server section
Click + Add new global MCP server
You should see an empty MCP servers configuration like this:

Add the Code Index MCP server to the JSON configuration. You can copy and paste this example:

{
  "mcpServers": {    
    "cidx-mcp": {
      "command": "cidx",
      "args": [
        "--mcp"
      ]
    }
  }
}

Note: If you already have other MCP servers installed, you only need to add this portion inside your mcpServers object:

  "cidx-mcp": {
    "command": "cidx",
    "args": [
      "--mcp"
    ]
  }

Example with another server:

{
  "mcpServers": {
    "cidx-mcp": {
      "command": "cidx",
      "args": ["--mcp"]
    },
    "dummy-server": {
      "command": "dummy",
      "args": ["--mcp"]
    }
  }
}

When fully installed, it should look like this (note the green light next to cidx-mcp):

You can now close the Cursor settings and start coding!

Try some example commands in CursorAI (be sure to mention mcp in your prompt):

Create a 3D game that makes use of Threejs and Rapier, please consult with the code index mcp

Setup OAUTH authentication with GitHub and be sure to look up the mcp for the right documentation.

Please fix this bug attatched and look up the mcp documentation to speed up the fix

See more usage patterns and examples for MCP →

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