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Cursor FiatDock search_x402

How to: Cursor FiatDock search_x402

client:Cursor transport:streamable-http tool:search_x402

Add FiatDock to Cursor

  1. 01

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

{
  "mcpServers": {
    "fiatdock-mcp": {
      "url": "https://fiatdock.com/mcp"
    }
  }
}
  1. 02

    Save the file and restart Cursor.

  2. 03

    Ask for something search_x402 does. Cursor lists the server's tools on connect and calls search_x402 itself — you do not invoke it by name.

  3. 04

    If nothing happens, check the server is running and that FiatDock'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

Set these first

FiatDock will not start until these are set, so search_x402 never becomes available.

  • FIATDOCK_URL
  • FIATDOCK_TOOLS
  • AGENT_PRIVATE_KEY
  • FIATDOCK_MAX_PRICE_USD

Same tool, other clients

This list was read from the server itself, by connecting to it and calling tools/list on 24 September 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.