Changelog

Error responses for unreachable target sites now return HTTP 422 with specific JSON error messages (e.g. DNS resolution failed, TLS certificate error, request timeout) instead of a generic 502. Response body includes the domain and a human-readable error description.

Added DNS Intelligence endpoint (/dns) — query A, AAAA, CNAME, MX, TXT, NS records with automatic provider fingerprinting (111 CNAME signatures).

Added SSL/TLS Certificate Check endpoint (/certificate/check) — inspect certificate issuer, expiry, chain, protocol version, and SANs for any domain.

Added Security Headers endpoint (/security) — grades websites A+ through F on CSP, HSTS, X-Frame-Options, X-Content-Type-Options, Referrer-Policy, and Permissions-Policy.

Added technology change feed (/changes) — track when monitored domains add, remove, or update technologies. Webhook alerts on changes.

Chrome extension published to Chrome Web Store — one-click tech stack detection in browser.

Added usage warnings — API responses include a warning when you reach 80% of your monthly quota.

Added /tech/{domain} pages — browse any domain's tech stack directly on detectzestack.com.

Custom domain live at detectzestack.com (migrated from detectzestack.fly.dev).

Added /analyze/batch — analyze up to 10 URLs in a single API request with optional CSV export.

Added /compare — side-by-side tech stack comparison across 2–10 sites.

Added /webhooks — HMAC-signed webhook notifications when domains are analyzed.

Added /history and /stats — view past scans and per-key usage analytics.

DetectZeStack API launched on RapidAPI with 7,200+ technology signatures via HTTP fingerprinting, DNS CNAME analysis, TLS certificate inspection, and custom header matching.