{"uid":"cap_jDIsAG2zs7dEESxJXpeI-","slug":"api-strale-io-1c89ef1d","name":"SSL/TLS Certificate Checker","description":"Check a domain's SSL/TLS certificate. Returns issuer, validity dates, days until expiry, protocol version, cipher, and SAN entries.","url":"https://api.strale.io/x402/ssl-check?utm_source=zero.xyz","method":"GET","headers":{},"bodySchema":{"type":"object","required":["domain"],"properties":{"domain":{"type":"string","description":"Domain name (e.g. example.com)"}}},"responseSchema":{"valid":{"type":"boolean"},"domain":{"type":"string"},"issuer":{"type":"string"},"valid_to":{"type":"string"},"is_expired":{"type":"boolean"},"days_until_expiry":{"type":"integer"}},"example":{"request":{"domain":"example.com"},"response":{"_meta":{"payment":{"method":"x402","price_usd":0.0324,"settlement_id":"0x1868fc2be59fc69e855f0f1c76c033e074749c6987cdc6ed252f5a7542b4ed42"},"capability":"ssl-check","latency_ms":8,"provenance":{"source":"tls-handshake","fetched_at":"2026-06-13T04:24:00.794Z"}},"valid":true,"domain":"example.com","issuer":"SSL Corporation","subject":"example.com","protocol":"TLSv1.3","valid_to":"2026-08-29T21:41:26.000Z","is_expired":false,"valid_from":"2026-05-31T21:39:12.000Z","cipher_name":"TLS_AES_256_GCM_SHA384","serial_number":"1AA73FEA257BE3334B9A29552E6F878E","cipher_version":"TLSv1.3","is_expiring_soon":false,"days_until_expiry":77,"subject_alt_names":["example.com","*.example.com"],"fingerprint_sha256":"BE:AB:14:CF:39:67:8F:DA:0E:F1:60:6E:ED:B8:18:C2:29:8B:A2:CC:7A:00:88:6E:7D:C2:D2:41:0F:24:CD:35"}},"exampleRequest":{"domain":"example.com"},"tags":["x402"],"displayCostAmount":"0.0324","displayCostAsset":"USDC","priceDynamic":false,"priceHint":null,"priceStatus":"priced","priceSource":"settled","requiresHandshake":false,"reviewCount":0,"rating":{"score":"0.00","successRate":"0.00","reviews":0,"stars":null,"state":"unrated"},"availabilityStatus":"unknown","priceObserved":null,"sessionDeposit":null,"pricing":{"kind":"static","summary":"$0.0324/call","primary":{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.0324","per":"call","confidence":"exact"},"accepted":[{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.0324","per":"call","confidence":"exact"}]},"paymentMethods":[{"uid":"pm_-tzJtxNczylPvxXcaCes5","protocol":"x402","methodType":"crypto","chain":"base","mode":"charge","costAmount":"0.0324","costPer":"request","priority":0,"asset":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","unit":"request","depositMicros":null,"planRef":null}],"brandName":null,"brandSlug":null,"brandBaseUrl":null,"brandDocsUrl":null,"whatItDoes":"Checks a domain's SSL/TLS certificate and returns issuer, validity dates, days until expiry, protocol version, cipher suite, and SAN entries.","exampleAgentPrompt":"Can you check the SSL certificate for stripe.com — I want to know the issuer, how many days until it expires, the TLS protocol version, and what SANs are listed?","exampleUseCases":null,"resultDescription":"Returns structured certificate data including the issuer organization, certificate validity start and end dates, number of days remaining until expiry, TLS/SSL protocol version (e.g. TLSv1.3), cipher suite in use, and the list of Subject Alternative Names (SANs) covered by the certificate.","failureModes":["Domain not found or does not resolve — returns error indicating DNS failure","Domain has no SSL certificate or serves on non-standard port — returns connection error","Certificate is self-signed or invalid — may still return data but flagged accordingly","Malformed domain input — returns validation error","Timeout if domain is unreachable or slow to respond"],"whenToPreferThis":"Use this endpoint when you need quick, structured SSL/TLS certificate metadata for a domain — especially expiry monitoring, issuer verification, protocol/cipher auditing, or SAN coverage checks. Prefer over manual openssl commands or browser inspection when programmatic, agent-accessible output is needed.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-10-12T18:45:35.260Z","isFirstParty":false,"canonicalSlug":"api-strale-io-1c89ef1d"}