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fern

Instant Docs and SDKs for your API
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Fern SDK and Documentation Platform

Fern helps you elevate your developer experience with two powerful products:

  • SDKs - Automatically generates production-ready SDKs that respect the idioms of each language. We support TypeScript, Python, Go, Java, Ruby, C#, PHP, and Swift, with Rust coming soon.

  • Docs - Creates interactive API documentation that developers actually want to use. Features include AI-powered search and chat, content migration tools, docs-as-code workflows, API key injection, access control (RBAC), and versioning.

Both products work with OpenAPI, AsyncAPI, OpenRPC, gRPC, or our simpler Fern Definition format, and can be deployed in the cloud or self-hosted for enterprise security and compliance requirements.

Join the many companies that have chosen Fern as their preferred solution for SDK generation and API documentation.

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  1. fern fern Public

    Input OpenAPI. Output SDKs and Docs.

    TypeScript 3.3k 248

  2. docs-starter docs-starter Public template

    Publish beautiful documentation from OpenAPI and markdown (MDX)

    MDX 33 12

  3. docs docs Public

    Documentation for Fern

    MDX 2 2

Repositories

Showing 10 of 52 repositories
  • fern Public

    Input OpenAPI. Output SDKs and Docs.

    fern-api/fern’s past year of commit activity
    TypeScript 3,324 Apache-2.0 248 289 (1 issue needs help) 38 Updated Oct 1, 2025
  • fern-platform Public

    Beautiful, interactive documentation websites powered by MDX and OpenAPI. Build, deploy, and maintain a developer documentation site.

    fern-api/fern-platform’s past year of commit activity
    TypeScript 39 Apache-2.0 21 0 39 Updated Oct 1, 2025
  • docs Public

    Documentation for Fern

    fern-api/docs’s past year of commit activity
    MDX 2 Apache-2.0 2 12 7 Updated Oct 1, 2025
  • package-seed-test Public

    Repo for GitHub Action to package seed tests

    fern-api/package-seed-test’s past year of commit activity
    TypeScript 0 MIT 0 0 3 Updated Sep 30, 2025
  • lattice-sdk-go Public Forked from anduril/lattice-sdk-go

    Anduril's Lattice Go SDK

    fern-api/lattice-sdk-go’s past year of commit activity
    Go 0 3 0 2 Updated Sep 30, 2025
  • generator-cli-go Public

    The Go library used to call Fern's generator-cli

    fern-api/generator-cli-go’s past year of commit activity
    Go 0 0 0 0 Updated Sep 30, 2025
  • lattice-sdk-python Public Forked from anduril/lattice-sdk-python

    Anduril's Lattice Python SDK

    fern-api/lattice-sdk-python’s past year of commit activity
    Python 0 12 0 0 Updated Sep 29, 2025
  • lattice-sdk-java Public Forked from anduril/lattice-sdk-java

    Anduril's Lattice Java SDK

    fern-api/lattice-sdk-java’s past year of commit activity
    Java 0 3 0 0 Updated Sep 29, 2025
  • lattice-sdk-javascript Public Forked from anduril/lattice-sdk-javascript

    Anduril's Lattice Javascript SDK

    fern-api/lattice-sdk-javascript’s past year of commit activity
    TypeScript 0 3 0 0 Updated Sep 29, 2025
  • fastapi-starter Public

    A starter repo for FastAPI + React, using Fern

    fern-api/fastapi-starter’s past year of commit activity
    JavaScript 17 15 1 5 Updated Sep 29, 2025
View all repositories

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