Wikipedia article summary for any topic: title, extract, thumbnail, canonical URL. Instant knowledge lookup for agents. Deterministic, no key. $0.01 USDC via x402 on Base. First 3 calls FREE per wallet — send header X-WALLET: 0x<addr>. No charge on upstream failure.
| Network | Scheme | Amount | Pay To |
|---|---|---|---|
| Base | exact | $0.01 USDC | 0x15d3...1cc8 |