
GraphQL and REST API Engine with built in Authorization.
Hasura API is a free Development API that requires apiKey authentication, is served over HTTPS and supports CORS, so it can be called from the browser.
Hasura delivers accurate, fast, and secure data access for AI and digital experiences. Trusted by data leaders and developers at Fortune 100 companies and high-growth AI and digital natives.
Details from hasura.io.

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.
Yes. The Hasura API is listed in the Development 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 Hasura API uses apiKey authentication, so you need to register for credentials before making requests.
Yes. The Hasura API supports CORS, so front-end JavaScript can call it directly.
Yes. The Hasura API is served over HTTPS, so it's safe to use in production.