{"uid":"cap_M1n54gB-ebHUSiDVQbutN","slug":"ssl-certificate-checker-3893fc98","name":"SSL Certificate Checker","description":"SSL certificate check: validity, issuer, expiry date and days left, SANs and TLS version. Input: a domain.","url":"https://minty-sprout.onrender.com/v1/ssl-cert?utm_source=zero.xyz","method":"POST","headers":{},"bodySchema":{"type":"object","properties":{"input":{"type":"string","maxLength":8000,"description":"A domain"}}},"responseSchema":{"type":"json","example":{"san":["coinbase.com","*.cdp.coinbase.com"],"host":"coinbase.com","valid":true,"cipher":"TLS_AES_256_GCM_SHA384","issuer":"Google Trust Services","expires":"2026-12-20T02:34:19+00:00","subject":"coinbase.com","days_left":49,"not_before":"Sep 21 01:34:31 2026 GMT","tls_version":"TLSv1.3"}},"example":null,"exampleRequest":null,"tags":["x402"],"displayCostAmount":"0.001","displayCostAsset":"USDC","priceDynamic":false,"priceHint":null,"priceStatus":"priced","priceSource":"probe","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":"$0.001/call","primary":{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.001","per":"call","confidence":"exact"},"accepted":[{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.001","per":"call","confidence":"exact"}]},"paymentMethods":[{"uid":"pm_YDfTY0o3x14oxVyVO8rS_","protocol":"x402","methodType":"crypto","chain":"base","mode":"charge","costAmount":"0.001","costPer":"request","priority":0,"asset":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","unit":"request","depositMicros":null,"planRef":null}],"brandName":null,"brandSlug":null,"brandBaseUrl":null,"brandDocsUrl":null,"whatItDoes":"Checks an SSL certificate for a given domain, returning validity, issuer, expiry date, days remaining, SANs, cipher, and TLS version.","exampleAgentPrompt":"Can you check the SSL certificate for stripe.com — is it valid, who issued it, when does it expire, and what TLS version is it using?","exampleUseCases":[{"title":"Pre-launch HTTPS security audit","prompt":"Before we go live, check the SSL certificate for app.mycompany.com — I need to know if it's valid, who issued it, and how many days are left before it expires."},{"title":"Monitor certificate expiry for client site","prompt":"Can you check the SSL cert on clientportal.acmecorp.com and tell me if it's going to expire in the next 30 days? I need the exact expiry date and days remaining."},{"title":"Verify TLS version and cipher for compliance","prompt":"I need to confirm that api.fintech-partner.com is using TLS 1.3 and a strong cipher — can you pull the full SSL certificate details for that domain?"}],"resultDescription":"A JSON object containing: host, valid (boolean), issuer, subject, expiry timestamp, not_before date, days_left (integer), SANs array, TLS version string, and cipher suite name.","failureModes":["Invalid or non-existent domain returns an error or empty result","Domain has no SSL certificate (HTTP-only) may return an error","Network timeout if the target domain is unreachable","Malformed domain string causes a validation error","Wildcard or multi-level subdomain resolution may differ from root domain"],"whenToPreferThis":"Use this endpoint when you need a quick, structured summary of an SSL certificate — including expiry, issuer, SANs, and TLS version — for a single domain. Prefer it over manual browser inspection or general DNS tools when an agent needs machine-readable certificate metadata for monitoring, compliance checks, or security audits.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-11-01T06:57:43.056Z","isFirstParty":false,"canonicalSlug":"ssl-certificate-checker-3893fc98"}