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"What is the best practice for documenting internal APIs and how extensively should it be done?"

Internal APIs need documentation, just like public APIs, to ensure that developers within an organization can effectively use and maintain them.

The documentation should be written in plain English, avoiding excessive technical jargon.

Examples of well-documented internal APIs include Stripe's API and YouTube's API.

Tools like Swagger Inspector can automatically generate OpenAPI documentation for any API.

Swagger Inspector and SwaggerHub can help create, collaborate, and host internal API documentation for consumption.

Proper documentation should include detailed information about request-response cycles and offer additional resources for consumers.

Good API documentation practices involve providing clear explanations for domain-specific terms.

Documenting internal APIs properly allows new developers to understand the code and its functionality easily.

Internal APIs should aim for readability, maintainability, and value for third parties, just like public APIs.

Documentation is not an outcome itself, but it facilitates the desired outcomes of use and understanding of the API.

Feedback from developers is crucial during the design and development process of internal APIs.

Listening and responding to developers' feedback helps foster a sense of engagement and collaboration during the API development process.

OpenAPI Specification (OAS) provides a structured way to describe API endpoints, their supported methods, parameters, bodies, and more.

Documenting API endpoints effectively leads to better developer experiences and higher adoption rates.

Key indicators should be tracked when designing and documenting internal APIs, such as user experience, language and terminology, and opportunities for improvement.

Regularly updating and maintaining documentation ensures that it remains accurate and relevant, making it easier for developers to use the API.

Good documentation is essential for the success of an API, as it enables developers to effectively use and integrate it into their applications.

Internal API documentation should be easily accessible to all relevant stakeholders, ensuring a smooth development and integration experience.

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