Which security headers matter most?

Content-Security-Policy and Strict-Transport-Security carry the most weight — CSP is your main defense against cross-site scripting and HSTS forces HTTPS. X-Content-Type-Options and X-Frame-Options round out the baseline.

Do AI-built apps usually have these?

Rarely. Apps generated by AI builders almost always ship without security headers, which is why adding them is one of the quickest wins before launch.

Free tool

Security Headers Checker

Enter your app's URL to grade its HTTP security headers. We check the headers that protect against XSS, clickjacking and protocol-downgrade attacks, and show you exactly what's missing.

Missing headers?

Read how to add security headers, or get a full launch-readiness review with a signed clearance:

FAQ

Which security headers matter most?: Content-Security-Policy and Strict-Transport-Security carry the most weight — CSP is your main defense against cross-site scripting and HSTS forces HTTPS. X-Content-Type-Options and X-Frame-Options round out the baseline.
Do AI-built apps usually have these?: Rarely. Apps generated by AI builders almost always ship without security headers, which is why adding them is one of the quickest wins before launch.