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X402 Mcp

io.github.x402node/x402-mcp · v1.0.4

Hundreds of x402-paid APIs as MCP tools, auto-discovered from Coinbase Bazaar. USDC on Base+Solana.

Connect Runs on your machine

Terminal
claude mcp add x402-mcp -e X402_PRIVATE_KEY=<X402_PRIVATE_KEY> -- npx -y [email protected]
claude_desktop_config.json
{
  "mcpServers": {
    "x402-mcp": {
      "command": "npx",
      "args": [
        "-y",
        "[email protected]"
      ],
      "env": {
        "X402_PRIVATE_KEY": "<X402_PRIVATE_KEY>"
      }
    }
  }
}
~/.cursor/mcp.json
{
  "mcpServers": {
    "x402-mcp": {
      "command": "npx",
      "args": [
        "-y",
        "[email protected]"
      ],
      "env": {
        "X402_PRIVATE_KEY": "<X402_PRIVATE_KEY>"
      }
    }
  }
}
.vscode/mcp.json
{
  "servers": {
    "x402-mcp": {
      "type": "stdio",
      "command": "npx",
      "args": [
        "-y",
        "[email protected]"
      ],
      "env": {
        "X402_PRIVATE_KEY": "<X402_PRIVATE_KEY>"
      }
    }
  }
}

Replace the values in angle brackets with your own. Keys stay on your machine; we never see them.

Tools

This server runs locally, so its tools are listed by your MCP client once it starts.

Environment variables

NameDescription
X402_PRIVATE_KEY
Required, secret
Base EOA private key (hex, 0x-prefixed) with USDC for signing x402 payments

Details

Package[email protected] (NPM, stdio)
First published18 Jul 2026
Last updated18 Jul 2026
Registry nameio.github.x402node/x402-mcp

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