AI features

Your documentation site comes with automatic optimizations for AI tools, plus features you can install to help users find answers and keep your content up to date.

Find answers

Users can chat with Ask Fern to get instant answers from your documentation. It’s available as an embedded chat widget, via the API for custom integrations, and as a Slack app for your community workspace. Ask Fern understands context and provides citations so users can verify information and explore further.

Create and update content

Fern Writer is a technical writing agent powered by Devin AI available in beta. Tag @Fern Writer in Slack to request documentation updates, and it drafts targeted edits via GitHub pull requests. Fern Writer learns your writing style and adapts to your team’s workflow.

Optimize for AI

Your site is automatically optimized for AI tools and search engines. Fern serves Markdown instead of HTML to AI agents, reducing token consumption and helping these tools process your content faster. Your site hosts llms.txt and llms-full.txt files so LLMs can index your documentation efficiently.

Developers using your products can connect AI clients like Claude Desktop, Cursor, and Windsurf directly to your docs through the MCP server that Fern hosts for your site. This gives users up-to-date information about your product right where they need it.