402MCP.org — HTTP 402 & Agent Payment Registry for Cursor

org.402mcp/registry

Decode HTTP 402 challenges (L402, x402, MPP) and choose agent payment rails from an open registry.

client:Cursor transport:streamable-http runtime:npm tools:7

Install 402MCP.org — HTTP 402 & Agent Payment Registry in Cursor

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

{
  "mcpServers": {
    "registry": {
      "url": "https://402mcp.org/api/v1/mcp"
    }
  }
}

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