Simple and efficient short link creation.
UrlBae API is a free URL Shorteners API that requires apiKey authentication, is served over HTTPS and supports CORS, so it can be called from the browser.
API Reference for Developers.
Details from urlbae.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 UrlBae API is provided by UrlBae (urlbae.com). API Reference for Developers.
Yes. The UrlBae API is listed in the URL Shorteners 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 UrlBae API uses apiKey authentication, so you need to register for credentials before making requests.
Yes. The UrlBae API supports CORS, so front-end JavaScript can call it directly.
Yes. The UrlBae API is served over HTTPS, so it's safe to use in production.