x402 Preflight for Cursor

io.github.chico10117/x402-preflight

Check an x402 endpoint's payment challenge and discovery metadata before paying.

client:Cursor transport:streamable-http tools:3

Install x402 Preflight in Cursor

~/.cursor/mcp.json · windows: %USERPROFILE%\.cursor\mcp.json

{
  "mcpServers": {
    "x402-preflight": {
      "url": "https://x402.chikocorp.com/mcp"
    }
  }
}

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