P402

Overview

P402 is a Model Context Protocol server that routes requests across multiple AI providers while handling x402 micropayment settlement on Base L2, all with a simple 1% flat fee structure. By integrating P402 into your MCP client, you unlock provider routing and payment infrastructure as tools your AI assistant can invoke directly.

The server runs locally via the npm package @p402/mcp-server, communicating over stdio. You'll need to set the P402_API_KEY environment variable to authenticate. Version 1.0.0 is available under the MIT license, with full source code at Z333Q/p402-protocol on GitHub.

P402 belongs in the AI & Agents category and works with MCP clients including Claude Desktop, Claude Code, Cursor, VS Code, Windsurf, and Zed. If you maintain this project, claim your listing on mcp.site to earn the Verified badge and keep information accurate.

Installation

// claude_desktop_config.json
{
  "mcpServers": {
    "p402": {
      "command": "npx",
      "args": [
        "-y",
        "@p402/mcp-server"
      ],
      "env": {
        "P402_API_KEY": "<p402-api-key>"
      }
    }
  }
}

Requires P402_API_KEY