How to write excellent API documentation
How to write excellent API documentation.
Well-written documentation is a vital part of the API building process. Without it, your API service becomes more challenging to implement and understand, deterring potential users.
Here are six points to include in your documentation. First is an introduction/overview of what your API does. It should be short and precise. This could also be a getting started section.
Secondly, include code snippets throughout the docs in several different programming languages to demonstrate use.
The third point is tutorial explanations. Code snippets alone are not enough. You should also explain clearly what the code is doing, provide details on parameters and methods, and provide example HTTP requests with their expected responses.
As a fourth point, give information on authorization details, access to credentials, API Keys, tokens, etc. Remind users of all basic API security best practices.
The fifth point is always to include error details and debugging solutions. Explain common errors, which endpoints will return which error codes, and provide standard solutions.
As a final point, always provide links to external resources. If your API requires external tools such as npm, or OAuth, link the appropriate documentation. Your documentation should be accessible, regardless of the user's skill level and technical knowledge.
If you want to enhance your documentation further, consider adding a Glossary, comments section, FAQs section, and a contact section. It's essential to note that your documentation should be well structured. Avoid large blocks of text and overly technical writing. It should also be openly accessible, not only to registered users.