How to Write API Documentation

API (Application Programming Interface) documentation is technical writing that helps developers understand and utilize the interface for communicating with a specific application.

Through this documentation, developers can comprehend how to use the API, the functionalities it offers, the inputs and outputs, and possible errors along with their handling methods.

API documentation should be written clearly and systematically to ensure smooth collaboration not only with internal developers but also with external developers.

If the documentation is poorly organized, making it difficult for the client to understand required parameters for requests or response formats, this can lead to unnecessary confusion and increased communication costs.

Let's explore some common English expressions frequently used in practical API documentation writing through examples.

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