Fern Fern
Fern is an API-first developer experience platform that generates documentation, SDKs, and CLIs from a single API specification. It is designed to keep technical content, code libraries, and AI agents synchronized through a docs-as-code workflow.
Launched Fern Agent (August 2026), an AI-driven tool for managing documentation updates, navigation, and site analytics via Slack, Dashboard, or MCP-connected coding agents.
As of
- Automatic SDK generation in 9+ languages
- AI-powered documentation authoring and chatbot (Ask Fern)
- Docs-as-code via Git with Markdown and custom React components
- Agent-native integrations including an MCP server and llms.txt
- Unified API catalog with multi-source and multi-language support
API-first companies that need to keep documentation, SDKs, and CLI tools synchronized and AI-ready.
Teams looking for simple static site hosting without a need for SDK generation, or those who prefer a no-code visual editor over a Git-centric workflow.
Offers a free Hobby plan for individuals, a Team plan at $150/month (yearly), and custom-priced Enterprise plans for scaling organizations.
Fern is a robust, all-in-one platform for high-performance developer tools, effectively reducing maintenance overhead for teams that treat documentation as a core product.
Is Fern free?
Fern is Freemium. Offers a free Hobby plan for individuals, a Team plan at $150/month (yearly), and custom-priced Enterprise plans for scaling organizations. Check the official site for current plans.
What is Fern best for?
API-first companies that need to keep documentation, SDKs, and CLI tools synchronized and AI-ready.
Who makes Fern?
Fern is developed by Fern. It is listed in the AI Codebase Knowledge & Generation category on ai.dosa.dev.
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