Inspect the security certificate of any host: issuer, subject, validity window, days remaining, expiry flags, alternative names, serial number, fingerprint, negotiated protocol and the full chain. Built for expiry monitoring and renewal alerts.
{"host":"google.com","port":443,"authorized":true,"authorization_error":null,"protocol":"TLSv1.3","alpn":"h2","subject_cn":"*.google.com","issuer":"Google Trust Services","valid_from":"Jun 22 08:35:23 2026 GMT","valid_to":"Sep 14 08:35:22 2026 GMT","days_remaining":65,"expired":false,"not_yet_valid":false,"serial_number":"AE068DC8BDF3E7570A0C6AFB39C2E9C5","fingerprint_sha256":"DC:53:B5:AD:68:0E:E4:41:6D:AC:DF:1A:CD:1F:59:2A:FA:78:43:B8:DC:D8:CB:63:98:E7:A9:7C:F9:DB:34:94","subject_alt_names":["*.google.com","*.appengine.google.com","*.bdn.dev","*.origin-test.bdn.dev","*.cloud.google.com","*.crowdsource.google.com","*.datacompute.google.com","*.google.ca","*.google.cl","*.google.co.in","*.google.co.jp","*.google.co.uk","*.google.com.ar","*.google.com.au","*.google.com.br","*.google.com.co","*.google.com.mx","*.google.com.tr","*.google.com.vn","*.google.de","*.google.es","*.google.fr","*.google.hu","*.google.it","*.google.nl","*.google.pl","*.google.pt","*.gemini.cloud.google.com","*.gstatic.com","*.metric.gstatic.com","*.gvt1.com","*.gcpcdn.gvt1.com","*.gvt2.com","*.gcp.gvt2.com","*.url.google.com","*.youtube-nocookie.com","*.ytimg.com","ai.android","android.com","*.android.com","*.flash.android.com","g.co","*.g.co","goo.gl","www.goo.gl","google-analytics.com","*.google-analytics.com","google.com","googlecommerce.com","*.googlecommerce.com","urchin.com","*.urchin.com","youtu.be","youtube.com","*.youtube.com","music.youtube.com","*.music.youtube.com","youtubeeducation.com","*.youtubeeducation.com","youtubekids.com","*.youtubekids.com","yt.be","*.yt.be","android.clients.google.com","*.aistudio.google.com"],"chain":[{"subject":"*.google.com","issuer":"WR2"},{"subject":"WR2","issuer":"GTS Root R1"},{"subject":"GTS Root R1","issuer":"GlobalSign Root CA"}]}
curl --location --request GET 'https://zylalabs.com/api/13152/website+security+certificate+checker+api/26698/check+certificate+of+a+host' --header 'Authorization: Bearer YOUR_API_KEY'
Después de registrarte, a cada desarrollador se le asigna una clave de acceso a la API personal, una combinación única de letras y dígitos proporcionada para acceder a nuestro endpoint de la API. Para autenticarte con el Website Security Certificate Checker API simplemente incluye tu token de portador en el encabezado de Autorización.
| Encabezado | Descripción |
|---|---|
Autorización
|
Requerido
Debería ser Bearer access_key. Consulta "Tu Clave de Acceso a la API" arriba cuando estés suscrito.
|
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Never let a certificate expire in production again. One call inspects the security certificate of any host and returns everything a monitoring pipeline needs.
Ideal for certificate expiry monitoring and renewal alerts, post-deploy checks in delivery pipelines, and auditing issuers across a domain portfolio. Expired or invalid certificates are still returned in full so you can diagnose them.
The endpoint returns detailed information about a host's security certificate, including the issuer, subject, validity window, days remaining, expiry flags, alternative names, serial number, fingerprint, negotiated protocol, and the full certificate chain.
Key fields in the response include "host," "authorized," "valid_from," "valid_to," "days_remaining," "expired," "not_yet_valid," "serial_number," "fingerprint_sha256," and "subject_alt_names," providing comprehensive certificate details.
The response data is structured in JSON format, with key-value pairs representing various attributes of the security certificate. This allows for easy parsing and integration into monitoring systems.
The endpoint provides information on certificate validity, trust verification, detailed certificate attributes, and handshake protocol details, making it suitable for monitoring and auditing purposes.
Typical use cases include monitoring certificate expiry, setting up renewal alerts, conducting post-deployment checks in CI/CD pipelines, and auditing certificates across multiple domains for compliance.
Users can customize requests by specifying the host they want to inspect in the endpoint URL. This allows for targeted checks on specific domains or services.
Data accuracy is maintained through regular updates and checks against trusted certificate authorities, ensuring that the information returned reflects the current status of the security certificates.
Los usuarios pueden esperar patrones de datos consistentes, como fechas de validez y expiración formateadas en GMT, indicadores booleanos para el estado del certificado y listas estructuradas para nombres alternativos, lo que facilita el análisis y monitoreo straightforward