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AI and media

X402 Tools Mcp

io.github.mizukaizen/x402-tools-mcp · v0.1.4

melis x402 Tools — 22 pay-per-call APIs for AI agents. No accounts, no API keys. USDC on Base.

Source code Set it up

Connect Runs on your machine

Terminal
claude mcp add x402-tools-mcp -e X402_PAYMENT_HEADER=<X402_PAYMENT_HEADER> -e X402_INTERNAL_KEY=<X402_INTERNAL_KEY> -- npx -y @melis-ai/[email protected]
claude_desktop_config.json
{
  "mcpServers": {
    "x402-tools-mcp": {
      "command": "npx",
      "args": [
        "-y",
        "@melis-ai/[email protected]"
      ],
      "env": {
        "X402_PAYMENT_HEADER": "<X402_PAYMENT_HEADER>",
        "X402_INTERNAL_KEY": "<X402_INTERNAL_KEY>"
      }
    }
  }
}
~/.cursor/mcp.json
{
  "mcpServers": {
    "x402-tools-mcp": {
      "command": "npx",
      "args": [
        "-y",
        "@melis-ai/[email protected]"
      ],
      "env": {
        "X402_PAYMENT_HEADER": "<X402_PAYMENT_HEADER>",
        "X402_INTERNAL_KEY": "<X402_INTERNAL_KEY>"
      }
    }
  }
}
.vscode/mcp.json
{
  "servers": {
    "x402-tools-mcp": {
      "type": "stdio",
      "command": "npx",
      "args": [
        "-y",
        "@melis-ai/[email protected]"
      ],
      "env": {
        "X402_PAYMENT_HEADER": "<X402_PAYMENT_HEADER>",
        "X402_INTERNAL_KEY": "<X402_INTERNAL_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_PAYMENT_HEADER
Optional, secret		Signed x402 payment token from your wallet client. Set if handling payments manually.
X402_INTERNAL_KEY
Optional, secret		Bypass key for trusted internal callers — skips x402 payment flow entirely.

Details

Package@melis-ai/[email protected] (NPM, stdio)
First published15 May 2026
Last updated15 May 2026
Registry nameio.github.mizukaizen/x402-tools-mcp

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