Documentation for developers & agents
Stunning by default, easy to update, and designed to convert.
Built for OpenAPI
Your spec is the source of truth. Push a change and your docs regenerate. No manual updates, no drift.
Agent-friendly
Serve /llms.txt and structured context so agents can use your API out of the box.
Docs as Code
Write docs in Markdown, review in GitHub, and let your CI pipeline publish updates automatically.
SEO & Performance Optimized
High-performing docs for search engines.
The level of support we receive from Fern is unparalleled; it feels like working with a local internal team rather than an external vendor. Fern's rapid turnaround on complex features demonstrates a deep commitment to our technical success and a true partnership in building our developer ecosystem.
Corey WeathersDeveloper Relations Lead
Author in multiple ways
Edit docs the way your team works. We ship a CLI, Fern Writer, and GitHub Actions so writers, engineers, and agents all contribute to the same repo.
Author in multiple ways
Edit docs the way your team works. We ship a CLI, Fern Writer, and GitHub Actions so writers, engineers, and agents all contribute to the same repo.
Synced to your specs
Docs and MCP servers all derive from the same spec. Change one thing upstream and the entire surface regenerates automatically. Nothing drifts, nothing falls out of sync, and you never spend time manually updating pages.
Plus, add SDKs in 7 supported languages at any time.
Dashboard and analytics
Edit, measure, and improve your docs from a single dashboard. See what developers search for, where they get stuck, and ship updates to resolve them.
Web analytics
Spot 404s, drop-offs, and popular paths, then redirect or rewrite to keep developers moving.
Reader insights
See what developers search, ask the AI chat, and flag as feedback in one place. Then quickly ship updates to the answers they need.
Designed for the AI era
Your docs are readable by every coding agent and easy to maintain by every human.
Readable by every AI tool
Your docs are served as clean Markdown, with an auto-generated llms.txt. Coding assistants, agents, and LLMs get accurate context about your API without any extra work from you.
Get your Agent-readiness score →Fern SDKs handle pagination automatically — list endpoints return an async iterator you can loop over directly.
AI chat in docs
Built-in AI chat lets users ask questions and get answers grounded in your docs, with no hallucinations or generic responses.
MCP server
Every Fern docs site ships with a built-in MCP server. AI agents and coding assistants can query your API reference directly, no manual setup.
@Fern Writer Write a quick start guide for my Fern generated TypeScript SDK
PR created: github.com/your-company/docs/pull/3929
AI technical writer
Tag Fern Writer to draft updates, open GitHub PRs, and keep your documentation in sync with what your team ships.
Everything you need to increase API adoption
Beautiful out of the box, easy to maintain, and built to convert users.
Enterprise-ready by default
Security, deployment, and partnership that scale with your API.
Security & access control
Gate your docs so customers see only the content relevant to them. Connect any SAML or OIDC provider and lock pages down by role, team, or plan.
Multi-source docs
Aggregate content from multiple repos into one site, with product and version switching that scales across teams without breaking IA.
Self-host
Run on our managed cloud, or self-host to meet stricter security, networking, and compliance requirements.
Localization
First-class translated content. Ship docs in multiple languages as part of the rollout, not as a bolt-on.
Compliance
SOC 2 Type II and annual pentests. Reports and supporting security documentation available for procurement.
Support & SLAs
Uptime SLA, escalation paths, and a dedicated Slack or Teams channel, with 24/7 coverage for critical incidents.