API documentation

Third-party developers use your API to make their own apps or services work with your product. They need your API to access your product’s features, send or receive data, or add functionality to their systems. Good API documentation shows them exactly how to do this, so they don’t need to contact your team for help.

Strong API docs should:

• List endpoints clearly
• Show request and response examples
• Explain errors and how to handle them

Keep the structure the same for every endpoint. For example, for REST APIs include:

• The HTTP method (GET, POST, etc.)
• The URL
• Required parameters
• Example responses (both success and error cases)

Use real examples, not just vague descriptions, so developers know exactly what to send and expect. At the start of the docs, explain authentication and rate limits. Developers need to know how to authenticate requests and how many requests are allowed. Finally, add code snippets in popular languages. This saves time and helps developers get started faster.