{"uid":"cap_y4Wl_QKg5-HsyynSsjedg","slug":"ipv4-fr-ssl-certificate-check-api-c6d92111","name":"ipv4.fr SSL Certificate Check API","description":"Fast, reliable network tools API. IP geolocation, DNS lookup, SSL check, WHOIS, email validation, port scan. Free tier available.","url":"https://ipv4.fr/x402/v1/ssl/%7Bhost%7D?utm_source=zero.xyz","method":"GET","headers":{},"bodySchema":{"type":"object","properties":{"properties":{"type":"string"}}},"responseSchema":{"type":"json","example":{"host":"example.com","valid":true,"days_remaining":120}},"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_bOm1AusVY0QJG4Zw_OOz6","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 the SSL/TLS certificate validity and days remaining for a given hostname","exampleAgentPrompt":"Can you check if the SSL certificate for stripe.com is still valid and how many days it has left before it expires?","exampleUseCases":[{"title":"Pre-launch SSL certificate check","prompt":"Before we go live, can you verify that the SSL certificate on mybusiness.com is valid and tell me how many days are left on it?"},{"title":"Monitor expiring certificates","prompt":"Check whether the SSL certificate on api.acmecorp.com is still valid — I want to know if it's going to expire soon so I can renew it in time."},{"title":"Diagnose HTTPS connection error","prompt":"A user is getting a security warning when visiting checkout.mystore.io — can you check if the SSL certificate there is valid or if it's expired?"}],"resultDescription":"Returns a JSON object with the queried host, a boolean indicating whether the certificate is valid, and the number of days remaining until the certificate expires.","failureModes":["Host does not exist or is unreachable — may return invalid status or error","Self-signed or untrusted certificates may report as invalid","Certificate already expired — days_remaining may be zero or negative","Timeout if the host is slow to respond on port 443","Invalid hostname format in the path parameter"],"whenToPreferThis":"Choose this endpoint when you need a quick, cheap ($0.003 USDC) programmatic check of SSL certificate validity and expiration for any hostname, especially for monitoring pipelines, pre-deployment checks, or diagnosing HTTPS errors. It is part of a broader network tools suite (ipv4.fr) also covering DNS, WHOIS, and port scanning, making it convenient when you already use that platform.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-10-29T12:35:21.938Z","isFirstParty":false,"canonicalSlug":"ipv4-fr-ssl-certificate-check-api-c6d92111"}