Fern

Detailed overview

Fern is an API tooling platform that turns API definitions into client SDKs and developer documentation. API teams can describe endpoints and types, generate libraries for supported languages, and publish reference material from a shared source of truth. Its workflow is intended to reduce repetitive work across SDK maintenance and API documentation while preserving control over naming, organization, and presentation. Fern can fit teams building public APIs that need a consistent onboarding experience, as well as internal platform groups standardizing service clients. The generated artifacts should still be reviewed for compatibility, authentication behavior, error handling, and language-specific ergonomics before release. Fern is specialized around API producer workflows, so it is not a general-purpose application generator or an IDE coding assistant. Organizations should consult the official documentation for current language targets, hosting choices, integrations, and plan-specific capabilities.

Pricing details

Fern offers a free starting option and paid plans; current limits and enterprise terms are described on its official pricing pages.