io.github.x402node/x402-mcp
Hundreds of x402-paid APIs as MCP tools, auto-discovered from Coinbase Bazaar. USDC on Base+Solana.
Open source Open in the app JSON README (API)
About
Hundreds of x402-paid APIs as MCP tools, auto-discovered from Coinbase Bazaar. USDC on Base+Solana.
Details
- Kind
- MCP servers
- Topic
- Finance & crypto
- Publisher
- x402node
- Origin
- official
- Category
- ferramentas
- Transport
- local
- Version
- 1.0.4
- Stars
- 1
- Last push
- 2026-07-18T20:36:16Z
- Repository state
- ativo
- Language
- JavaScript
- License
- MIT
- Added
- 2026-08-29 04:01:41
- Updated
- 2026-08-29 04:01:41
- Origin id
io.github.x402node/x402-mcp
README
<!-- mcp-name: io.github.x402node/x402-mcp -->
# 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`:
```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
```bash
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