SSL Certificate Checker

SSL Certificate Checker API

Domain DataIncluded in Subscription

SSL Checker is a simple tool for checking SSL certificates. It returns the SSL certificate details of a website.

Online
1 credit/call
99.9% uptime
Docs
avg: 859ms|p50: 802ms|p75: 897ms|p90: 1010ms|p99: 1237ms
Start for Free
Online
1 credit/call
99.9% uptime
Docs
avg: 859ms|p50: 802ms|p90: 1010ms|p99: 1237ms

Live Test API

Try out the SSL Certificate Checker with a live request and see the response in real-time.

API Request

GET
https://api.apiverve.com
Parameters

API Response

200 OK
1234567891011121314151617181920212223242526272829303132
{
  "status": "ok",
  "error": null,
  "data": {
    "subject": {
      "C": "US",
      "ST": "California",
      "O": "eBay, Inc.",
      "CN": "ebay.com"
    },
    "issuer": {
      "C": "GB",
      "O": "Sectigo Limited",
      "CN": "Sectigo Public Server Authentication CA OV R36"
    },
    "subjectaltname": "DNS:ebay.com, DNS:befr.ebay.be, DNS:benl.ebay.be, DNS:cafr.ebay.ca, DNS:e-bay.it, DNS:ebay.at, DNS:ebay.be, DNS:ebay.ca, DNS:ebay.ch, DNS:ebay.co.uk, DNS:ebay.com.au, DNS:ebay.com.hk, DNS:ebay.com.my, DNS:ebay.com.sg, DNS:ebay.de, DNS:ebay.es, DNS:ebay.fr, DNS:ebay.ie, DNS:ebay.in, DNS:ebay.it, DNS:ebay.nl, DNS:ebay.ph, DNS:ebay.pl, DNS:ebay.us, DNS:ebay.vn, DNS:wwww.ebay.co.uk, DNS:wwww.ebay.com, DNS:wwww.ebay.com.au, DNS:wwww.ebay.de, DNS:wwww.ebay.in, DNS:wwww.ebay.it",
    "infoAccess": {
      "CA Issuers - URI": [
        "http://crt.sectigo.com/SectigoPublicServerAuthenticationCAOVR36.crt"
      ],
      "OCSP - URI": [
        "http://ocsp.sectigo.com"
      ]
    },
    "ca": false,
    "bits": 2048,
    "valid_from": "Jul 28 00:00:00 2025 GMT",
    "valid_to": "Jul 28 23:59:59 2026 GMT",
    "serialNumber": "99F408949A6416EDC3B8F5EC77B2EBE5",
    "domain": "ebay.com"
  }
}

Multiple Access Methods

REST API with multiple response formats, GraphQL, and MCP for AI agents

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JSON

JavaScript Object Notation

XML

Extensible Markup Language

YAML

Human-readable data format

CSV

Comma-separated values

BETA

GraphQL

Query language for APIs

NEW

MCP

AI agent integration

Zero-Code Integration

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Developer SDKs

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NuGet

.NET / C#
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NuGetDocs

PyPI

Python
Ready
PyPIDocs

NPM

Node.js / JavaScript
Ready
NPMDocs
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Frequently Asked Questions

Get answers to common questions about the SSL Certificate Checker API

What does the SSL Certificate Checker API do?

SSL Checker is a simple tool for checking SSL certificates. It returns the SSL certificate details of a website. The API returns structured data in JSON, XML, or YAML format, making it easy to integrate into any application or workflow.

How fast is the SSL Certificate Checker API?

The SSL Certificate Checker API has an average response time of 859ms, with a median (p50) of 802ms and 99th percentile of 1237ms. Our infrastructure maintains 99.9% uptime with servers distributed globally for low latency.

How much does the SSL Certificate Checker API cost?

Each call to the SSL Certificate Checker API uses 1 credit. The free tier includes 100 credits per month. Paid plans start at $29.99/month with higher limits, and enterprise plans offer custom pricing with priority support.

How do I authenticate SSL Certificate Checker API requests?

Include your API key in the request header as X-API-Key: your_key_here. All requests are made over HTTPS for security. You can get your API key by signing up for a free account.

What HTTP methods does SSL Certificate Checker support?

The SSL Certificate Checker API supports GET requests. Simply pass your parameters as query strings in the URL. Check our documentation for detailed parameter specifications.

Ready to integrate SSL Certificate Checker API?

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