Ssl

{
  "basis": "Certificate Transparency logs (newest valid certificate for the name), not the live TLS handshake",
  "checkedAt": "2026-10-15T06:45:34.578Z",
  "count": 2,
  "note": "A certificate that the host serves is normally the newest one issued for its name; a replaced certificate can show here a little before the server uses it. Certificates issued for a name that is not on the host's list are not shown.",
  "results": [
    {
      "certificate": {
        "daysLeft": 88,
        "dnsNames": [
          "garage.github.com",
          "gist.github.com",
          "github.com"
        ],
        "issuer": "Sectigo",
        "notAfter": "2027-01-11T23:59:59Z",
        "notBefore": "2026-10-14T00:00:00Z",
        "wildcard": false
      },
      "ctSource": "certspotter",
      "host": "github.com",
      "https": {
        "answers": true,
        "hsts": "max-age=31536000; includeSubdomains; preload",
        "status": 200
      },
      "status": "ok"
    },
    {
      "certificate": {
        "daysLeft": 71,
        "dnsNames": [
          "*.example.com",
          "example.com"
        ],
        "issuer": "SSL.com",
        "notAfter": "2026-12-25T22:56:35Z",
        "notBefore": "2026-09-26T22:49:11Z",
        "wildcard": true
      },
      "ctSource": "certspotter",
      "host": "example.com",
      "https": {
        "answers": true,
        "hsts": null,
        "status": 200
      },
      "status": "ok"
    }
  ],
  "source": "api.certspotter.com (crt.sh as fallback) and an HTTPS HEAD request to each host"
}

# bash or zsh: see the payment challenge. Nothing is charged.
curl -sS -g -i 'https://api.sitecheck-api.workers.dev/api/ssl?hosts=github.com%2Cexample.com'

# x402 v2 sends the challenge base64-encoded in the PAYMENT-REQUIRED header (v1 sends it in the body).
# To read the header:
curl -sS -g -o /dev/null -D - 'https://api.sitecheck-api.workers.dev/api/ssl?hosts=github.com%2Cexample.com' \
  | grep -i '^payment-required:' | cut -d' ' -f2 | tr -d '\r' | base64 --decode

// npm i @x402/fetch @x402/evm viem
import { wrapFetchWithPayment, x402Client } from "@x402/fetch";
import { registerExactEvmScheme } from "@x402/evm/exact/client";
import { privateKeyToAccount } from "viem/accounts";

// Pays at most $0.001 per call.
const client = new x402Client().setSpendControls({ maxAmountPerPayment: "$0.001" });
registerExactEvmScheme(client, { signer: privateKeyToAccount(process.env.EVM_PRIVATE_KEY) });
const pay = wrapFetchWithPayment(fetch, client);

// Not sure it's safe to pay? ToolVet checks it first for $0.005. Pay for that from a separate
// client: this one is capped at $0.001 per payment. GET https://toolvet.app/api/v1/check?url=https%3A%2F%2Fapi.sitecheck-api.workers.dev%2Fapi%2Fssl
const res = await pay("https://api.sitecheck-api.workers.dev/api/ssl?hosts=github.com%2Cexample.com");
console.log(res.status, await res.text());

# pip install "x402[requests,evm]"
import os
from eth_account import Account
from x402 import x402ClientSync
from x402.http.clients import x402_requests
from x402.mechanisms.evm import EthAccountSigner
from x402.mechanisms.evm.exact.register import register_exact_evm_client

# Pays at most $0.001 per call.
client = x402ClientSync().set_spend_controls({"max_amount_per_payment": "$0.001"})
register_exact_evm_client(client, EthAccountSigner(Account.from_key(os.environ["EVM_PRIVATE_KEY"])))

with x402_requests(client) as session:
    res = session.get("https://api.sitecheck-api.workers.dev/api/ssl?hosts=github.com%2Cexample.com")
    print(res.status_code, res.text)