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Fern OpenAPI Support

Fern's OpenAPI specification support for generating SDKs and docs from REST API definitions.

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Field note

What it does

Compatible with OpenAPI v3.1.1, Fern ingests JSON or YAML API specs to generate SDKs, documentation, and server integrations.

Capabilities

Available capabilities

SDK Generation OpenAPI ingestion Server framework integration Documentation generation

Tags

Tags

REST API OpenAPI

Ways to use it

Ways to use it

sdk

python / https://buildwithfern.com/learn/api-definitions/openapi/server-frameworks/fastapi

Product features

Product features

Configure your organization

Connect your agent to your organization

Customize your docs

Docs quickstart

Explore Fern’s features

Initiate your docs

Install the CLI

Preview your docs

Publish to production

Set up your coding agent

Use guided UI