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Cursor Preflight preflight_token_risk

How to: Cursor Preflight preflight_token_risk

client:Cursor transport:streamable-http tool:preflight_token_risk

Add Preflight to Cursor

  1. 01

    Open ~/.cursor/mcp.json and merge this in. Keep any servers already there.

{
  "mcpServers": {
    "preflight": {
      "url": "https://preflight--preflight-api-mcp.modal.run/mcp"
    }
  }
}
  1. 02

    Save the file and restart Cursor.

  2. 03

    Ask for something preflight_token_risk does. Cursor lists the server's tools on connect and calls preflight_token_risk itself — you do not invoke it by name.

  3. 04

    If nothing happens, check the server is running and that Preflight's identifier in your config matches the one above exactly.

Use .cursor/mcp.json in a project root instead to scope it to that project. Cursor merges both. Cursor docs

Same tool, other clients

This list was read from the server itself, by connecting to it and calling tools/list on 14 November 2026. It is what the server actually exposes, not what its listing claims.

Mutating and Read-only are read off each tool's name, not its schema — a hint, not a guarantee. The registry stores tool names only; connect the server for its live schemas.