{"service":"http-headers","network":"eip155:8453","price_per_call":"$0.002","asset":"USDC on Base","payTo":"0x48Cda0da34816Db1F997C3D3b167a4f6af850CB2","facilitator":"https://facilitator.xpay.sh","endpoints":{"/headers?url=https://example.com":"paid — HTTP security headers analysis of a URL"},"protocol":"x402 v2, scheme exact (EIP-3009)"}