Technical Writing · 5 min read · 5 October 2026
Writing API documentation developers love
Great API docs answer three questions fast: what can I do, how do I authenticate, and what happens when it goes wrong?
Developers read API documentation with a goal and a deadline. They skim, copy an example, run it, and only read closely when something breaks. Good documentation is designed for exactly that behaviour.
Lead with a working example
The fastest path to trust is a request a developer can copy and run in under a minute, with the exact response they should expect.
curl -X POST https://example.com/api/inquiry \
-H "Content-Type: application/json" \
-d '{"name":"Ada","email":"ada@example.com","message":"Hello"}'Document errors as carefully as success
Every status code your API can return deserves a row in a table: what it means, the most likely cause and how to fix it. Error documentation is where most support tickets are prevented.
A reference structure that scales
- Overview and authentication
- Quick start
- Endpoint reference (method, path, parameters, body, responses)
- Error reference
- Changelog
See these patterns applied in the interactive documentation demonstration in the Experience Lab.
Working on something similar?
Let's talk about how to make it clear, effective and genuinely useful.