extract-openapi-from-code

You can extract an OpenAPI specification directly from existing API codebases using a code-first approach. This automates spec generation for frameworks like FastAPI, Spring Boot, NestJS, and Laravel, ensuring your documentation matches your code without manual writing.

Yes, OpenAPI specifications can be extracted from Flask, Django, and Rails projects. This skill supports multiple frameworks including Hono and Laravel, allowing you to generate consistent API documentation across different programming languages and tech stacks.

The best way to start code-first SDK generation is to extract an OpenAPI spec from your existing API code. Once you have the generated specification file, you can use it to automate the creation of client libraries and share API contracts with frontend teams.

Yes, the Speakeasy CLI is required to validate the extracted OpenAPI specifications and execute subsequent SDK generation workflows. You need this command-line tool installed to fully leverage the code-first specification extraction and client library creation process.

Generating an OpenAPI spec from code eliminates the need for manual spec writing and ensures consistency between your API implementation and its documentation. This code-first approach prevents documentation drift and streamlines sharing API contracts with consumers.

Supported frameworks for extracting OpenAPI specifications include FastAPI, Flask, Django, Spring Boot, NestJS, Hono, Rails, and Laravel. This broad framework support enables code-first development and subsequent SDK generation across multiple programming languages.