No API keys. No signup. Just HTTP 402 + real USDC on Base mainnet.
53 security, DeFi, and enrichment APIs — each call settles on-chain.
Paste this into Claude Desktop, Cursor, or Windsurf. 10 tools auto-discover. First call free.
{
"mcpServers": {
"x402-registry": {
"type": "sse",
"url": "https://etherealgoodsco.store/mcp/sse"
}
}
}
First call auto-seeded free. Subsequent calls: x402 USDC.