Tech Stack Detection

Analyze a website's technology stack through eight detection layers. Start with Layer 1–5 (fast, shell + web fetch only, no browser), then escalate to Layer 6–7 (browser-based) for deep JS and network analysis. Report confidence per finding.

The layered order matters: each layer is cheaper than the next, and earlier layers often make later ones unnecessary. Do not jump to the browser before exhausting the fast layers — most stacks are fully identified by L1+L2+L3+L5 in under 10 seconds.

Execution Order (Mandatory)

1. L1: HTTP Response Headers (shell)
2. L2: Cookies from Set-Cookie header (same L1 request, zero extra cost)
3. L3: robots.txt (one web fetch)
4. L4: DNS records MX/TXT/NS (shell — nslookup)
5. L5: HTML Source + Meta Tags (web fetch)
6. L6: JS Globals + Version Extraction (browser_navigate + browser_evaluate)
7. L7: Network Requests (browser_network on → reload → off → read captures)
8. Report: Structured output with categories and confidence