Use when you need callable agent services for a capability across protocols: x402 listings ranked by relevance weighted by 30-day paying wallets, plus hosted MCP servers from the Official MCP Registry (a capped subset, count in coverage; those naming x402, L402, MPP or pay-per-call first; that registry publishes no prices). L402 and MPP listings are not covered. ?q= required. $0.002 USDC per call. Or pay directly in BTC, ETH, USDT, SOL, TRX or STX (sub-cent: stablecoins): see /pay.
| Network | Scheme | Amount | Pay To |
|---|---|---|---|
| Base | exact | $0.002000 USDC | 0xECa8...5354 |
| Arbitrum One | exact | $0.002000 USDC | 0xECa8...5354 |
| Polygon | exact | $0.002000 USDC | 0xECa8...5354 |
| eip155:43114 | exact | 0.00 tokens | 0xECa8...5354 |
| Optimism | exact | $0.002000 USDC | 0xECa8...5354 |
| Celo | exact | 0.00 tokens | 0xECa8...5354 |
| Arbitrum One | exact | 0.00 tokens | 0xECa8...5354 |
| Ethereum | exact | $0.002000 USDC | 0xECa8...5354 |
| stacks:1 | exact | 0.00 tokens | SP34GH...W986 |