For AI agents: a documentation index is available at the root level at /llms.txt and /llms-full.txt. Append /llms.txt to any URL for a page-level index, or .md for the markdown version of any page.
Book a demoLog inStart for free
  • Getting started
    • Overview
    • How it works
    • Quickstart
    • Project structure
    • Customer showcase
    • Changelog
  • Configuration
    • Overview
    • Site-level settings
    • Page-level settings
  • Writing content
    • Markdown basics
    • Rich media in Markdown
    • Fern Editor
    • Reusable snippets
  • AI features
    • Overview
    • Fern Writer
    • AI-generated examples
    • Markdown access
      • Overview
      • Customize LLM output
      • Agent directives
      • Analytics and integration
    • MCP server
    • API catalog discovery
  • Public API
    • GETJWT from Fern API key
    • GETAlgolia search credentials
    • GETCurrent user information
  • Fern Writer API
    • GETGet Fern Writer Install Link
Checking status...
SOC2Soc 2 Type II
© 2026 Fern • Birch Solutions, Inc., a Postman company

Documentation

SDKsDocsAsk FernCLI Reference

API Definitions

OpenAPIAsyncAPIOpenRPCgRPC

Resources

BlogSupportPricing

Company

Brand KitPrivacy PolicyTerms of Service
LogoLogo
Book a demoLog inStart for free

Changelog

February 4, 2025
February 4, 2025
Was this page helpful?
Edit this page
Previous

April 27, 2025

Next

January 21, 2025

Introducing Global Language Sync: Code Language Preferences That Follow You

Starting today, when you select a programming language in any <CodeBlocks> or <Tabs>, that preference will automatically sync across all documentation pages. This means no more manually switching languages as you navigate through different sections of our docs. Whether you’re viewing implementation examples, debugging guides, or API references, your preferred language follows you. Language preference is kept in client-side local storage.

This behavior is automatically enabled for all <CodeBlocks>. To add language preferences to a <Tab>, you can add the language property. Check out language sync in the example below:

Example
Markdown
TypeScript
Python
Java

This is content specific to TypeScript.

1console.log("Hello, world!");
1console.log("This content is synced!");
Read the docs