OpenAPI → TypeScript Types Generator

Generate types from an OpenAPI spec

An OpenAPI specification defines an API’s data models and endpoints, and matching TypeScript types keep a client type-safe. This tool generates TypeScript types from the components.schemas of an OpenAPI spec and lists the API endpoints, so a spec becomes usable client code scaffolding.

Why generate from the spec

An OpenAPI spec is the source of truth for an API’s shape, and hand-writing TypeScript types to match it duplicates that truth and lets them drift as the API evolves. Generating the types from the spec’s schemas keeps the client aligned with the contract, and listing the endpoints gives a quick map of what the API offers. This is a focused generator for the schema types and endpoint list; a full client generator produces more, but this covers the parts most useful to have at hand.

A client aligned with the API

It runs entirely in your browser, so nothing you paste is uploaded and the result is yours to copy straight into a project. Because it works client-side, you can use it on private code and data without anything leaving your machine.

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