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Standard checks $0.01 USDC on Base.","endpoint_url":"https://domain.hugen.tokyo/domain/whois?domain=example.com","category":"infra.security","kind":"api","price_amount":0.01,"price_currency":"USDC","chains":["base"],"status":"verified","status_changed_at":1784901610,"created_at":1784898945,"origin":"submitted","has_sample":false,"x402_version":2,"onchain_unique_payers_30d":360,"score":0.9999999999999994,"p50_latency_ms":1095.0493982506293,"probe_count":3097,"last_probed_at":1788909915,"report_score":null,"report_count":0,"distinct_payers":0,"paid_verified":true,"evidence_tier":"paid_verified","evidence_note":"We paid this endpoint real USDC and confirmed settlement on-chain; the response was inspected.","verdict_age_seconds":847},{"id":"3aa3bcf9-e3c","name":"Gotobi API — Japanese FX date data","description":"The only programmatic source for Japanese gotobi (五十日) dates: days that drive predictable USDJPY buying pressure before the 9:55 JST Nakane fixing, holiday-adjusted through 2099. Also serves Japanese public holiday data. 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Live tick data, complements daily-reference-rate feeds rather than duplicating them. $0.005 USDC per request on Base or Solana. Commercial use permitted.","endpoint_url":"https://tick.hugen.tokyo/tick/latest?symbol=EURUSD","category":"data.fx","kind":"api","price_amount":0.005,"price_currency":"USDC","chains":["base"],"status":"verified","status_changed_at":1784901614,"created_at":1784898945,"origin":"submitted","has_sample":false,"x402_version":2,"onchain_unique_payers_30d":360,"score":0.9999999999999994,"p50_latency_ms":1143.2703559158367,"probe_count":3100,"last_probed_at":1788910255,"report_score":null,"report_count":0,"distinct_payers":0,"paid_verified":true,"evidence_tier":"paid_verified","evidence_note":"We paid this endpoint real USDC and confirmed settlement on-chain; the response was inspected.","verdict_age_seconds":507},{"id":"4177ff48-267","name":"Mailcheck API","description":"Email validation for AI agents: syntax, MX record, disposable-domain (5,000+ known providers), free-provider, role-based, and typo detection combined into one 0-1 confidence score. 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Label + entity resolution, balance + activity scoring, and large-transfer monitoring. $0.01-0.02 USDC per call on Base.","endpoint_url":"https://whale.hugen.tokyo/whale/lookup?address=0x28C6c06298d514Db089934071355E5743bf21d60","category":"data.crypto","kind":"api","price_amount":0.01,"price_currency":"USDC","chains":["base"],"status":"verified","status_changed_at":1784901615,"created_at":1784898945,"origin":"submitted","has_sample":false,"x402_version":2,"onchain_unique_payers_30d":360,"score":0.9999999999999994,"p50_latency_ms":1134.8683388751929,"probe_count":3094,"last_probed_at":1788910119,"report_score":null,"report_count":0,"distinct_payers":0,"paid_verified":true,"evidence_tier":"paid_verified","evidence_note":"We paid this endpoint real USDC and confirmed settlement on-chain; the response was inspected.","verdict_age_seconds":643}]}