npm package discovery and stats viewer.

Discover Tips

  • General search

    [free text search, go nuts!]

  • Package details

    pkg:[package-name]

  • User packages

    @[username]

Sponsor

Optimize Toolset

I’ve always been into building performant and accessible sites, but lately I’ve been taking it extremely seriously. So much so that I’ve been building a tool to help me optimize and monitor the sites that I build to make sure that I’m making an attempt to offer the best experience to those who visit them. If you’re into performant, accessible and SEO friendly sites, you might like it too! You can check it out at Optimize Toolset.

About

Hi, 👋, I’m Ryan Hefner  and I built this site for me, and you! The goal of this site was to provide an easy way for me to check the stats on my npm packages, both for prioritizing issues and updates, and to give me a little kick in the pants to keep up on stuff.

As I was building it, I realized that I was actually using the tool to build the tool, and figured I might as well put this out there and hopefully others will find it to be a fast and useful way to search and browse npm packages as I have.

If you’re interested in other things I’m working on, follow me on Twitter or check out the open source projects I’ve been publishing on GitHub.

I am also working on a Twitter bot for this site to tweet the most popular, newest, random packages from npm. Please follow that account now and it will start sending out packages soon–ish.

Open Software & Tools

This site wouldn’t be possible without the immense generosity and tireless efforts from the people who make contributions to the world and share their work via open source initiatives. Thank you 🙏

© 2026 – Pkg Stats / Ryan Hefner

x402node-mcp

v1.0.4

Published

MCP server exposing x402 paid APIs (cn402.com + x402node.dev) as MCP tools. Auto-discovers from CDP Bazaar. USDC micropayments on Base + Solana mainnet.

Vulnerabilities

Powered byPowered by Snyk
  • 0High
  • 0Medium
  • 0Low

Links

Git

Maintainers

x402nodex402node

Keywords

mcpmodel-context-protocolx402usdcbasecoinbasepaymentagentclaudeanthropicai-agentstablecoin

Readme

x402-mcp

MCP server bringing hundreds of x402-paid APIs to AI agents (Claude, Cursor, MCP-aware clients). Auto-discovers tools from CDP Bazaar; handles USDC micropayments on Base + Solana.

Features

  • Auto-discovers x402 endpoints from CDP Bazaar (no hard-coded list)
  • Reads metadata directly from Bazaar (description, schema, pricing)
  • Refreshes every 5 min — new endpoints appear without restart
  • Handles HTTP 402 + USDC payment automatically
  • Multi-chain: Base + Solana mainnet live (USDC on both); Polygon/BNB/EVM expandable

Install (Claude Desktop)

Add to claude_desktop_config.json:

{
  "mcpServers": {
    "x402-mcp": {
      "command": "npx",
      "args": ["-y", "x402node-mcp"],
      "env": { "X402_PRIVATE_KEY": "0xYOUR_BASE_PRIVATE_KEY" }
    }
  }
}

Set X402_PRIVATE_KEY to a Base EOA private key (hex, 0x-prefixed) with USDC on Base mainnet (Solana payment via SPL USDC also supported). Restart Claude Desktop. The server auto-discovers ~117 tools on first run.

Cost Safety

  • Each tool call costs $0.0001-$0.10 USDC depending on endpoint
  • Hard cap: MAX_PRICE_USD env var (default $0.10/call); calls above are blocked
  • Use a fresh burner wallet, not your main wallet

How it works

Agent calls tool -> HTTP 402 -> x402-fetch signs EIP-3009 -> CDP Facilitator settles on Base or Solana -> response returned. Buyer pays no gas.

Development

git clone https://github.com/x402node/x402-mcp
cd x402-mcp
npm install
cp .env.example .env  # edit X402_PRIVATE_KEY
node mcp-server.js

Links

  • x402 protocol: https://x402.org
  • CDP Bazaar: https://docs.cdp.coinbase.com/x402/bazaar
  • MCP: https://modelcontextprotocol.io
  • npm: https://www.npmjs.com/package/x402node-mcp
  • Glama: https://glama.ai/mcp/servers/x402node/x402-mcp

License

MIT