Is your vibe-coded app safe, seen, and cited?
One URL in — security, SEO, AEO and site-health out. Get a full report in seconds, with a copy-paste AI fix for every issue. Free, forever.
Four scanners, one URL
SiteCheck runs the same classes of check a security engineer, an SEO consultant and an AI-visibility specialist would — automatically, in one pass.
Security scanner
40+ live checks for the risks that actually bite AI-built apps: exposed API keys in your JS bundles, missing security headers, weak TLS, open CORS, unprotected forms, publicly served .env / .git, and Supabase / Firebase misconfigurations.
- Exposed secrets (OpenAI, Anthropic, Stripe, AWS…)
- Security headers, HSTS, CSP
- Supabase RLS & Firebase rules
- OWASP-style common holes
SEO checker
See exactly how Google reads your page: titles, meta descriptions, canonicals, headings, structured data, sitemaps, robots, social cards and mobile-readiness — each graded with a concrete fix.
- Title, description & canonical
- Structured data (JSON-LD)
- robots.txt & XML sitemap
- Open Graph & Twitter cards
AEO / AI visibility
Answer Engine Optimization grades how likely ChatGPT, Claude and Perplexity are to cite you: llms.txt, AI crawler access, extractable content depth, semantic markup and Q&A schema.
- llms.txt & AI crawler rules
- Extractable content depth
- FAQ / Q&A schema
- Semantic HTML structure
Health & performance
Post-launch hygiene: server response time, compression, caching, document weight and script bloat — the signals behind Core Web Vitals and a fast first paint.
- Server response time
- Compression & caching
- Document weight
- Script count
From URL to fix in three steps
Paste your URL
No signup, no install. Just the address of the site you want to check.
We scan it live
We fetch your page and its JS bundles and run 40+ real checks in seconds.
Fix with AI
Every issue comes with plain guidance and a copy-paste prompt for Claude, Cursor or any agent.
Every issue ships with an AI fix prompt
You didn't hand-write your app, so you shouldn't have to hand-fix it. Each finding includes a ready-to-paste prompt you drop into Claude, Cursor, or any coding agent — it explains the problem and asks for the fix in your stack.
Run a free scan# AI fix prompt
I found secret keys shipped in my client JavaScript. Help me rotate them, move all secret-side calls behind a server API route, and replace client usage with only publishable/anon keys. Walk me through it for my stack.
Questions
Is it really free?
Yes. Every check, every category, every AI fix prompt and the full report are free — no signup, no credit card, no locked findings. Scan as often as you like.
What do you actually scan?
We fetch your page and up to eight of its JavaScript bundles, then run live checks: security headers, TLS, exposed secrets, CORS/CSRF, BaaS misconfig, SEO metadata and structured data, AI-crawler visibility (AEO), and performance/health signals.
Do you store my data?
The scan runs on demand and the report is generated for you in the moment. We don't require an account, so there's nothing tying a scan to you.
Can I scan any website?
Only scan sites you own or are authorized to test. SiteCheck performs lightweight, read-only requests — it doesn't attack or exploit anything — but you're responsible for having permission.
How is this different from a full pentest?
SiteCheck is fast, automated coverage of the common, high-impact mistakes AI-built apps ship with. It's a great first line of defense, not a replacement for a manual security audit of a high-risk application.
Scan your site now — it's free
Find the security holes, SEO gaps and AI-visibility misses in your app before your users (or attackers) do.