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from $1.00 / 1,000 successful lookups

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Security Headers Lookup — HSTS, CSP & Header Grade API

Try for free

Check any website's security-relevant HTTP response headers (HSTS, CSP, X-Frame-Options, X-Content-Type-Options, Referrer-Policy, and more) and get an A-F letter grade in one request. No key, no browser, just the live headers a browser would see.

Pricing

from $1.00 / 1,000 successful lookups

Rating

0.0

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Developer

Adrian Voss

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Monthly active users

4 minutes ago

Last modified

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