# Fern

> Publicly sourced profile assembled by Optimly, in the Optimly AI Brand Index. Last refreshed 2026-10-04.

- **Business Profile:** https://optimly.ai/brand/fern
- **Dataset:** https://optimly.ai/brand/fern.json
- **Markdown:** https://optimly.ai/brand/fern/llms.txt
- **Official website:** https://buildwithfern.com
- **Slug:** fern
- **Categories:** developer-tools

## Overview

- **Tagline:** Built for the AI era with agent-friendly documentation, AI search, and AI-assisted authoring. Generates docs, SDKs, and CLI from one source of truth supporting multiple API protocols (REST, WebSockets, GraphQL, OpenAPI, AsyncAPI, gRPC). Offers enterprise-grade security, multi-source docs, self-hosting, and localization.
Source: Brand's website (https://buildwithfern.com) · 2026-10-04

- **Description:** Fern provides a platform for upgrading developer and agent experience by generating API documentation, SDKs, and CLIs from a single source of truth. It integrates AI capabilities for enhanced search, content creation, and agent interaction.
Source: Brand's website (https://buildwithfern.com) · 2026-10-04

## Offerings

- **Core capabilities:**
  - API Documentation (Docs)
  - SDKs
  - CLI
  - AI-powered chat in docs (Ask Fern)
  - llms.txt generation
  - MCP server
  - AI-assisted authoring (Fern Writer)
  - Postman collection generation
Source: Brand's website (https://buildwithfern.com) · 2026-10-04

- **Pricing:** Freemium/Subscription, Enterprise
Source: Brand's website (https://buildwithfern.com) · 2026-10-04

## Audience

- **Target industry:** API providers, development teams, enterprises, companies looking to improve developer experience and integrate AI into their API consumption workflows.
Source: Brand's website (https://buildwithfern.com) · 2026-10-04

## Landscape

- **Competitors:**
  - ReadMe
  - Mintlify
Source: Brand's website (https://buildwithfern.com) · 2026-10-04

Page last updated 2026-10-17.