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DetectZeStack icon

DetectZeStack

API suite for website intelligence: tech stack detection (Wappalyzer fingerprinting + DNS + TLS + HTTP headers), SSL/TLS certificate inspection, DNS intelligence with provider enrichment, security header analysis with letter grading, and technology change monitoring.

Cost / License

  • Freemium (Subscription)
  • Proprietary

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Platforms

  • Online
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What is DetectZeStack?

DetectZeStack is an API suite for website intelligence. It provides 5 core products through a single REST API:

  1. Tech Stack Detection — Pass any URL and get back the full technology stack: frameworks, CMS, CDNs, analytics, payment processors, and more. Combines Wappalyzer fingerprinting, DNS CNAME analysis, TLS certificate inspection, and HTTP header matching in a single call. Includes batch analysis (up to 10 URLs), side-by-side tech comparison, and CPE 2.3 identifiers for NVD vulnerability mapping.

  2. SSL/TLS Certificate Inspection — Full certificate details including subject, issuer, validity dates, signature algorithm, public key info, Subject Alternative Names, and the complete certificate chain. Useful for security audits and expiration monitoring.

  3. DNS Intelligence — Retrieve A, AAAA, CNAME, MX, NS, TXT, and SOA records for any domain, with automatic provider enrichment that identifies email providers (Google Workspace, Microsoft 365, Zoho, etc.) and DNS providers (Cloudflare, AWS Route 53, etc.) from raw records.

  4. Security Header Analysis — Analyze security headers and get a letter grade (A+ through F) based on Mozilla Observatory methodology. Checks Content-Security-Policy, HSTS, X-Frame-Options, X-Content-Type-Options, Referrer-Policy, and Permissions-Policy with actionable recommendations.

  5. Technology Change Monitoring — Track technology changes over time with webhook notifications. Get alerted when websites add or remove technologies.

Free tier offers 100 requests per month. Available on RapidAPI and as a Chrome extension on the Chrome Web Store.