Fern

Docs, SDKs, and CLIs for your API

Fern generates documentation sites, client SDKs, and a CLI from an API specification (OpenAPI, GraphQL, AsyncAPI, gRPC). Docs include search, llms.txt, an MCP server, and AI search; SDKs are generated in multiple languages. Docs-as-code workflow with Git-based review, visual editor, and Fern Agent for Slack/Teams.

Category: Developer productivity
Pricing: freemium
Free tier: yes
API: yes
MCP server: yes
SDK: yes
Open source: unknown

#api-documentation #sdk-generation #docs-as-code #mcp-server #llms.txt #cli #openapi

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Listed 2026-10-24 · last verified 2026-10-24 · extracted by @cf/zai-org/glm-5.3-flash · confidence 0.95

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