{"currency":"USD","payment_asset":"USDC","protocol":"x402","x402_version":2,"network":"eip155:84532","network_name":"Base Sepolia (test funds)","mode":"testnet","available":true,"tiers":[{"id":"quick","usd":"0.10","sources":3,"queries":1,"chars":5000},{"id":"standard","usd":"0.50","sources":6,"queries":2,"chars":7000},{"id":"deep","usd":"1.50","sources":10,"queries":3,"chars":9000}],"billing":"Per completed research request, including insufficient_evidence. Provider errors before settlement are not charged."}