A first FastAPI endpoint can be surprisingly quick to build. The real learning begins when the API needs to handle invalid input, communicate with a database, return consistent errors, and remain easy to test.
A useful practice project is a task-management API. Start with basic create, read, update, and delete operations, then add request validation, structured error responses, database persistence, and automated tests.
Once the fundamentals are working, consider adding an AI-powered feature, such as generating task summaries. Keeping that feature separate from core business logic makes the application easier to maintain.
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What do you prioritize first in a new API: clean structure, validation, tests, or database design?
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