Tell me about your experience working with APIs. What have you encountered in practice?

I have encountered various tasks when working with APIs:

• Testing REST APIs: verifying the correctness of responses, statuses, headers, data formats (JSON, XML).
• Authentication and authorization: working with tokens (JWT, OAuth), checking access to resources.
• Error handling: verifying proper error processing by the server, validating error messages.
• Performance: load testing APIs, analyzing response times.
• Integration with external services: configuring and testing interactions with third parties.
• Automation of tests: writing scripts in Postman, RestAssured, SoapUI, or other tools.

Practical challenges included:

• Unstable test environments.
• Ambiguous API documentation.
• Handling asynchronous calls and webhooks.
• Testing API versioning and backward compatibility.

This experience allowed me to develop effective testing and automation strategies that ensure the quality and stability of API operations.