>The Best API Documentation Tool

# Redocly > OpenAPI-generated documentation tool with 24k+ stars on Github - make APIs your company's superpower. ## Table of contents - [API-first design](https://redocly.com/blog/api-first.md) - [Hello world, our mission is to perfect the API Developer Portal](https://redocly.com/blog/api-dev-portal.md): ReDoc was born out of frustration with rendering my OpenAPI definitions for API reference docs. - [How to reuse schemas when required properties change across endpoints](https://redocly.com/blog/all-of-schemas.md): Answering real questions about how to use OpenAPI to design and describe APIs. - [API catalog as the AI substrate of the future | Redocly](https://redocly.com/blog/api-catalog-ai-substrate.md): Discover how API catalogs become essential infrastructure when AI agents work alongside developers. Learn why catalogs must extend beyond APIs to include services, people, and AI agents. - [The unseen economics of an API catalog | Redocly](https://redocly.com/blog/api-catalog-value.md): Discover how API catalogs deliver millions in ROI by eliminating search waste, preventing costly mistakes, and enabling faster development through automation and trust. - [API into AI](https://redocly.com/blog/api-into-ai.md): Smooth management transition and new product announcement. - [Learn OpenAPI in a day](https://redocly.com/blog/accelerated-learning-openapi.md): Accelerated learning approach applied to OpenAPI. - [Beat the Invisible Man: Unforced errors in API design | Redocly](https://redocly.com/blog/beat-the-invisible-man.md): Learn how to identify and eliminate unforced errors in API design and documentation that cause silent failures and developer frustration. - [Add OpenAPI tags for next-level API descriptions](https://redocly.com/blog/add-openapi-tags-for-next-level-api-descriptions.md): Tag your OpenAPI endpoints and help your users navigate their own path to success. - [API council: the wisdom of your API crowd](https://redocly.com/blog/api-council.md)