x402-api

About x402-api

Use x402-api with your agent

claude mcp add x402-api -- npx -y @x402-api/mcp-server

{
  "mcpServers": {
    "x402-api": {
      "command": "npx",
      "args": [
        "-y",
        "@x402-api/mcp-server"
      ]
    }
  }
}

Frequently asked questions

What is x402-api?

x402-api is an MCP (Model Context Protocol) server by fernsugi in the Autonomous Agents category. DeFi data API for AI agents — pay-per-call via x402/USDC on Base

How do I connect x402-api to Claude, Cursor, or another MCP client?

Install x402-api from its npm package (@x402-api/mcp-server) and register it under "mcpServers" in your client's MCP configuration — for example claude_desktop_config.json or Cursor's mcp.json — then restart the client.

Is x402-api open source?

Yes — the source code is public at github.com/fernsugi/x402-api-mcp-server.

Can AI agents pay to use x402-api?

Not yet through Loomal — x402-api is listed as a free directory entry. If its maintainer verifies ownership, they can set per-call USDC pricing that agents pay over x402, with settlement on Base.