Mcp X402 Pay

Overview

Mcp X402 Pay is a Model Context Protocol (MCP) server: MCP server that pays x402-gated HTTP endpoints — fetch, and on a 402 authorize, sign, retry. In practice that means any MCP-compatible AI assistant can call Mcp X402 Pay's tools directly — the model decides when to use them in a conversation or agent run.

It runs locally: the npm package @cryptoapis-io/mcp-x402-pay speaks MCP over stdio on your machine. No credentials are required — it works out of the box. The current release is v0.4.0, published under the MIT license, with source at CryptoAPIs-io/cryptoapis-mcp-x402-pay on GitHub.

Mcp X402 Pay is listed under Development on mcp.site and works with any MCP client — Claude Desktop, Claude Code, Cursor, VS Code, Windsurf, Zed and the rest of the ecosystem — using the install snippets below. If you maintain Mcp X402 Pay for CryptoAPIs-io, claim this listing to verify ownership, earn the Verified badge, and keep the details current.

Installation

// claude_desktop_config.json
{
  "mcpServers": {
    "mcp_x402_pay": {
      "command": "npx",
      "args": [
        "-y",
        "@cryptoapis-io/mcp-x402-pay"
      ]
    }
  }
}