
Quotable is a free, open source quotations API.
Quotable Quotes API is a free Personality API that requires no API key, is served over HTTPS and has unconfirmed CORS support.
Random Quotes API.
Details from github.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.
Ever-growing list of James Clear quotes from the 3-2-1 Newsletter
Free MBTI personality types and OEJTS test scoring
The Quotable Quotes API is provided by lukePeavey (github.com). Random Quotes API.
Yes. The Quotable Quotes API is listed in the Personality 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 Quotable Quotes API requires no authentication, so you can start making requests without signing up.
CORS support for the Quotable Quotes API is unknown. Test a request from the browser, and fall back to a server-side call if it is blocked.
Yes. The Quotable Quotes API is served over HTTPS, so it's safe to use in production.