{"uid":"cap_XXEvo2lzei-Jb9YgY1nSY","slug":"x402-forgemesh-io-certificate-expiry-checker-0c7f9392","name":"x402.forgemesh.io Certificate Expiry Checker","description":"Certificate expiration checker: point it at any domain and get back its certificate's issuer, subject, valid-from and valid-until dates, and exactly how many days remain before it expires, even for certificates that are already expired or fail validation. Built for renewal-reminder cron jobs, uptime monitors, and security audits that can't afford a surprise lapse.","url":"https://x402.forgemesh.io/cert-expiry-checker","method":"POST","headers":{},"bodySchema":{"type":"object","properties":{"domain":{"type":"string","description":"hostname, e.g. example.com"}}},"responseSchema":{"type":"json","example":{"issuer":"DigiCert Inc","authorized":true,"days_until_expiry":143}},"example":null,"exampleRequest":null,"tags":["x402"],"displayCostAmount":"0.003","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":"$0.003/call","primary":{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.003","per":"call","confidence":"exact"},"accepted":[{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.003","per":"call","confidence":"exact"}]},"paymentMethods":[{"uid":"pm_ZCM_B_DYzqRSINqid0E9R","protocol":"x402","methodType":"crypto","chain":"base","mode":"charge","costAmount":"0.003","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 TLS/SSL certificate and returns its issuer, subject, validity dates, and exact days remaining (or overdue) before expiration","exampleAgentPrompt":"Check when the SSL certificate for github.com expires — I need the issuer, the valid-from and valid-until dates, and exactly how many days are left before it runs out.","exampleUseCases":null,"resultDescription":"Returns the certificate's issuer name, subject, valid-from date, valid-until date, and the precise number of days remaining until expiration (negative if already expired), even for certificates that fail validation or have already lapsed.","failureModes":["Domain does not exist or is unreachable — connection timeout or DNS failure","Domain has no TLS/SSL certificate configured — no certificate data returned","Malformed hostname input — validation error","Network error reaching the target host on port 443","Certificate already expired — still returns data but days-remaining will be negative"],"whenToPreferThis":"Use this endpoint when you need machine-readable TLS certificate expiry metadata for any domain, especially in renewal-reminder workflows, cron-based monitoring, uptime dashboards, or security audits. It handles already-expired and validation-failing certificates gracefully, making it more robust than browser-based checks.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-09-15T06:56:52.955Z","isFirstParty":false}