API documentation

API versioning best practices

Implementing API versioning strategies that protect existing integrations while enabling safe updates.

By Matt WilliamsAugust 20, 2025

llms.txt is overhyped

We built it, tested it, and checked the logs. llms.txt isn’t the “robots.txt for AI” — it’s mostly ignored. Here’s what actually matters.

By Adam AltmanAugust 20, 2025

How to optimize your docs for LLMs

Let's dig into a few practical strategies to make your API documentation work better with AI tools.

By Adam AltmanAugust 14, 2025

API documentation essentials

Discover how great API documentation helps developers succeed and sets your API apart. Learn the essentials of great API docs.

By Taylor KrusenDecember 15, 2024

What to do when your API changes

APIs change, that's reality. What matters is how you communicate that; get it right and create a winning API experience by adding a changelog and API description versions.

By Lorna MitchellMay 22, 2024

What's an API?

API is an acronym for application programming interface.

By Adam AltmanFebruary 11, 2022

SEO the API docs

SEO is an excellent API marketing technique.

By Adam AltmanNovember 30, 2021

Announcing Reference docs 2.0

Presenting the redesign and release of Reference docs 2.0

By Ivana Isadora DevcicJuly 07, 2021