Library: API docs
API deprecation guide: timelines, notices, and migration docs
Learn how to deprecate an API without breaking customers. Set a timeline, communicate changes, and write a migration guide that makes switching easy.
SDK documentation best practices: from quickstart to migration guides
Learn how to write SDK documentation with installation guides, authentication examples, troubleshooting steps, and migration guides that stay up to date.
What is an API playground? How interactive API documentation works
Learn how API playgrounds turn OpenAPI specifications into interactive documentation, with live requests, authentication, responses, and code examples.
Redocly alternatives: 6 better OpenAPI documentation tools in 2026
Six Redocly alternatives compared on OpenAPI ingestion, SDK support, hosting, AI readiness, and pricing, with guidance for your API documentation program.
How to write API documentation: a step-by-step guide
A step-by-step guide to planning, writing, testing, and maintaining API documentation, from authentication and quickstarts to references and changelogs.
OpenAPI vs Swagger: what's the difference between the two specs?
Swagger 2.0 and OpenAPI 2.0 are the same spec. Learn how Swagger became OpenAPI, how the versions differ, and which one to use for a new API.
5 API documentation examples worth studying
A look at five of the greatest API documentation examples built on Mintlify from Anthropic, Resend, Browserbase, Perplexity, and PayPal.
Best Swagger Docs Alternatives 2026
Swagger UI is a free OpenAPI renderer that helps API teams quickly publish their first reference docs. Swagger works well for internal testing and early API ...
Mintlify vs Fern: Which Platform Should You Choose for API Documentation in 2026?
Fern is a strong choice for API teams that primarily need to generate and maintain multi-language SDKs from OpenAPI or Fern Definition. Mintlify is the stron...
Best API Docs & SDK Generation Tools in 2026
Five tools that generate both API documentation and SDKs, compared on how well the docs match the typed client libraries developers actually use.
API Developer Portals for Enterprise: What to Look for in 2026
Compare API developer portal providers for enterprise on branding, governance, API reference quality, docs maintenance, AI-agent readiness, and analytics.
Best API Documentation Chat Tools in 2026
Developers expect to ask a question in their documentation and receive a grounded, cited answer in seconds. This guide compares five API documentation chat platforms.
API documentation guide: what it is and how to build it
Learn what makes API documentation great, how to structure endpoint references, and how to keep them accurate as your API changes.
Why Trophy chose Mintlify vs. Fern for documentation
Trophy, a gamification platform for developers, moved its docs from Fern to Mintlify in about a week. Here's why the team switched and what changed.
Our recommendations for creating API documentation (with examples)
Developers stick with APIs they can understand quickly, try without friction, and trust to behave as expected. That experience starts with clear, structured documentation written for humans and large language models (LLMs).
Best API documentation tools in 2026
Here's our shortlist if you're looking for API documentation tools to keep up with fast-changing APIs and modern developer needs.
Top GitBook alternatives for API documentation in 2026
Compare GitBook alternatives for API documentation, including Stoplight, Postman, Redocly, API Hub, and ReadMe, and see which fits your API team.