
Vimeo Developer API.
Vimeo API is a free Video API that requires OAuth authentication, is served over HTTPS and has unconfirmed CORS support.
Build something great. Vimeo's API supports flexible, high-quality video integration with your custom apps.
Details from developer.vimeo.com.

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The Vimeo API is provided by Vimeo Developer API (developer.vimeo.com). Build something great. Vimeo's API supports flexible, high-quality video integration with your custom apps.
Yes. The Vimeo API is listed in the Video 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 Vimeo API uses OAuth authentication, so you need to register for credentials before making requests.
CORS support for the Vimeo API is unknown. Test a request from the browser, and fall back to a server-side call if it is blocked.
Yes. The Vimeo API is served over HTTPS, so it's safe to use in production.