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io.github.mizukaizen/x402-tools-mcp MCP Server

io.github.mizukaizen/x402-tools-mcp

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What is the io.github.mizukaizen/x402-tools-mcp MCP server?

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

How to install io.github.mizukaizen/x402-tools-mcp

Copy-paste configuration for popular MCP clients.

transport: stdio
Config generated by PluginBench — verify against the source before use.
Environment / auth
  • X402_PAYMENT_HEADER
    secret

    Signed x402 payment token from your wallet client. Set if handling payments manually.

  • X402_INTERNAL_KEY
    secret

    Bypass key for trusted internal callers — skips x402 payment flow entirely.

Claude Desktop
~/Library/Application Support/Claude/claude_desktop_config.json
{
  "mcpServers": {
    "x402-tools-mcp": {
      "command": "npx",
      "args": [
        "-y",
        "@melis-ai/x402-tools-mcp"
      ],
      "env": {
        "X402_PAYMENT_HEADER": "<YOUR_X402_PAYMENT_HEADER>",
        "X402_INTERNAL_KEY": "<YOUR_X402_INTERNAL_KEY>"
      }
    }
  }
}
Cursor
~/.cursor/mcp.json
{
  "mcpServers": {
    "x402-tools-mcp": {
      "command": "npx",
      "args": [
        "-y",
        "@melis-ai/x402-tools-mcp"
      ],
      "env": {
        "X402_PAYMENT_HEADER": "<YOUR_X402_PAYMENT_HEADER>",
        "X402_INTERNAL_KEY": "<YOUR_X402_INTERNAL_KEY>"
      }
    }
  }
}
Windsurf
~/.codeium/windsurf/mcp_config.json
{
  "mcpServers": {
    "x402-tools-mcp": {
      "command": "npx",
      "args": [
        "-y",
        "@melis-ai/x402-tools-mcp"
      ],
      "env": {
        "X402_PAYMENT_HEADER": "<YOUR_X402_PAYMENT_HEADER>",
        "X402_INTERNAL_KEY": "<YOUR_X402_INTERNAL_KEY>"
      }
    }
  }
}
VS Code
.vscode/mcp.json
{
  "servers": {
    "x402-tools-mcp": {
      "type": "stdio",
      "command": "npx",
      "args": [
        "-y",
        "@melis-ai/x402-tools-mcp"
      ],
      "env": {
        "X402_PAYMENT_HEADER": "<YOUR_X402_PAYMENT_HEADER>",
        "X402_INTERNAL_KEY": "<YOUR_X402_INTERNAL_KEY>"
      }
    }
  }
}
Claude Code
claude mcp add x402-tools-mcp --env X402_PAYMENT_HEADER=<YOUR_X402_PAYMENT_HEADER> --env X402_INTERNAL_KEY=<YOUR_X402_INTERNAL_KEY> -- npx -y @melis-ai/x402-tools-mcp

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io.github.mizukaizen/x402-tools-mcp MCP Server | PluginBench