This is an example on how api could be tested from jest this example uses the popular Star Wars API but the process demonstrated here should be portable to any other API.
If you plan to run this test multiple times, it is recommended to run agains the local cache server, as the Star Wars API has a "Rate limiting". Check For Rate Limit here https://swapi.dev/documentation
Run yarn local:server in one terminal
And yarn test:local in the second terminal