3 services carry this tag in their source record. Tags come from the provider, not from us — a tag is a claim about what the service does, not proof that it does it well.
Site snapshot (SEO + security + tech + email): All four quick checks in one call for a website: on-page SEO score and issues, security headers/TLS grade, tech stack, and the domain's SPF/DKIM/DMARC email authentication....
SSL/TLS certificate check (expiry, issuer, SANs, chain): Connects to host:443 and reports the certificate: trusted or not (and why), hostname match, issuer, valid from/to, days left, expired / expiring within 21 days, SA...
Base or Ethereum contract address -> ABI and function list: Sourcify verification (exact/partial match), contract name, compiler, ABI, function selectors + signatures, event topics; proxies (EIP-1967, ZeppelinOS, others...