What must be checked when performing API testing?

Question

What must be checked when performing API testing?

Answer

During the API testing process, a request is raised to the API with the known data. This way you can analyze the validation response. While testing an API, you should consider: Accuracy of data Schema validation HTTP status codes Data type, validations, order and completeness Authorization checks Implementation of response timeout Error codes in case API returns, and Non-functional testing like performance and security testing