CISA Known Exploited Vulnerabilities
CISA KEV catalog of actively exploited CVEs as JSON, filterable by vendor, with CWE and due dates
Encrypting & decrypting text messages.
Classify API is a free Security API that requires no API key, is served over HTTPS and supports CORS, so it can be called from the browser.

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CISA KEV catalog of actively exploited CVEs as JSON, filterable by vendor, with CWE and due dates
Screen crypto addresses, emails, websites, IDs and countries against OFAC, EU, UK sanctions lists
Yes. The Classify API is listed in the Security category of the public-apis directory, which only includes APIs that are free or have a free tier. Check its documentation for rate limits and paid plans.
No. The Classify API requires no authentication, so you can start making requests without signing up.
Yes. The Classify API supports CORS, so front-end JavaScript can call it directly.
Yes. The Classify API is served over HTTPS, so it's safe to use in production.