{"service":"email-check","network":"eip155:8453","price_per_call":"$0.002","asset":"USDC on Base","payTo":"0x48Cda0da34816Db1F997C3D3b167a4f6af850CB2","facilitator":"https://facilitator.xpay.sh","endpoints":{"/email?domain=example.com":"paid — email deliverability signals for a domain"},"protocol":"x402 v2, scheme exact (EIP-3009)"}