🔒 Free API Security Scan

Know your API's security score in 30 seconds.

✨ 29 Security Checks 📋 OWASP Top 10 2023 🆓 100% Free
📊 Example scan result for threestack.io
91 Grade A
Excellent security posture
2
medium
20
pass
Sample findings:
🟡 Cacheable Response Medium
Response may be cached by intermediaries. Contains no Cache-Control header.
Add Cache-Control: no-store, no-cache for sensitive endpoints
✅ HTTPS Enforced Pass
All traffic encrypted via TLS. HSTS header present with preload.
✅ Strong Content Security Policy Pass
Restrictive CSP prevents XSS and data injection attacks.

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