Fraud detection API offering highly accurate browser fingerprinting.
FingerprintJS Pro API is a free Security API that requires apiKey authentication, is served over HTTPS and supports CORS, so it can be called from the browser.
How to quickly add Fingerprint device intelligence to your website or mobile app.
Details from dev.fingerprintjs.com.

Unified API suite · now live
Geocode an address, validate an email, track a flight or pull stock data with one account, one dashboard and one API key.
The FingerprintJS Pro API is provided by Fingerprint Docs (dev.fingerprintjs.com). How to quickly add Fingerprint device intelligence to your website or mobile app.
Yes. The FingerprintJS Pro 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.
Yes. The FingerprintJS Pro API uses apiKey authentication, so you need to register for credentials before making requests.
Yes. The FingerprintJS Pro API supports CORS, so front-end JavaScript can call it directly.
Yes. The FingerprintJS Pro API is served over HTTPS, so it's safe to use in production.