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Claude Desktop

402MCP.org — HTTP 402 & Agent Payment Registry for Claude Desktop

org.402mcp/registry

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

client:Claude Desktop transport:streamable-http runtime:npm tools:7

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

~/Library/Application Support/Claude/claude_desktop_config.json · windows: %APPDATA%\Claude\claude_desktop_config.json

{
  "mcpServers": {
    "registry": {
      "command": "npx",
      "args": [
        "-y",
        "mcp-remote",
        "https://402mcp.org/api/v1/mcp"
      ]
    }
  }
}

Claude Desktop has no remote transport in its config file, so this bridges through mcp-remote. Restart the app after saving. Claude Desktop docs

What Claude Desktop can do once it is connected

402MCP.org — HTTP 402 & Agent Payment Registry in other clients