x402 Trinity

Overview

x402 Trinity is an MCP server that equips AI agents with a wallet for paying x402 resources within configurable spending limits. It supports Base and USDC transactions with gasless payments, enabling agents to autonomously handle micropayments through the Model Context Protocol.

The server runs locally via the npm package x402-trinity, communicating over stdio. You'll need to configure three environment variables: X402_PRIVATE_KEY for wallet access, X402_MAX_PER_REQUEST to cap individual transactions, and X402_TOTAL_BUDGET to set overall spending limits. The latest release is v0.1.9, and the source code is available at devmster/x402-trinity on GitHub.

x402 Trinity is listed in the Finance category on mcp.site and works with any MCP client including Claude Desktop, Claude Code, Cursor, VS Code, Windsurf, and Zed. If you maintain this project, you're welcome to claim this listing to verify ownership and keep information up to date.

Installation

// claude_desktop_config.json
{
  "mcpServers": {
    "x402_trinity": {
      "command": "npx",
      "args": [
        "-y",
        "x402-trinity"
      ],
      "env": {
        "X402_PRIVATE_KEY": "<x402-private-key>",
        "X402_MAX_PER_REQUEST": "<x402-max-per-request>",
        "X402_TOTAL_BUDGET": "<x402-total-budget>"
      }
    }
  }
}

Requires X402_PRIVATE_KEY, X402_MAX_PER_REQUEST, X402_TOTAL_BUDGET