Radar check
What we found when we opened it. Every bar is one fact, with its date.
Last code pushed 25 Oct 2026, the same day before this check.
Latest release v8.45.0 on 25 Oct 2026.
Public since February 2020, a little over 6 years.
6,559 stars and 699 forks.
390 commits and 189 new issues in the last 90 days.
411 contributors. 386 pull requests merged in 90 days.
A security policy says how to report a problem. 42 published security advisories.
How the bars are scored
- Alive. Days since the last code push: a week or less 100, a month 90, three months 70, six months 50, a year 30, eighteen months 15, older 0.
- Releases. Age of the latest GitHub release, on a similar scale; no bar when the project publishes no releases.
- Maturity. Age of the project: eight years 100, five 90, three 70, two 55, one 40, six months 25, younger 10.
- Adoption. Stars on a log scale: 100,000 stars is 100, 10,000 is 80, 1,000 is 60, 100 is 40.
- Activity. Commits in the last 90 days: 300 or more 100, 100 85, 30 65, 10 45, any 25.
- Community. People who have contributed: 100 or more 100, 30 80, 10 60, 5 40, 2 25, one 10.
- Security. A published security policy 80, none 40; published advisories are listed, not scored.
Checked by Repo Radar on 26 Oct 2026 from the repository on GitHub.
In simple English
When you build a web app, your backend server describes its routes in a file called OpenAPI. Writing the frontend code to talk to that server takes hours of repetitive typing. This tool reads your server file and writes all the request functions and data types for you. It supports React, Angular, Vue, and many other frameworks. It is free to use and saves you from fixing typos when your backend changes.
What it is
Orval is a command-line tool that reads OpenAPI v3 or Swagger v2 files in JSON or YAML format. It outputs ready-to-use TypeScript code for client requests, data models, and query hooks.
What it is good for
Solo developers building full-stack web applications who want to keep their frontend API calls instantly synchronized with backend changes without writing manual fetch code.
- Supports major frontend frameworks including React, Vue, Svelte, and Angular.
- Generates mock data and data validation schemas automatically.
- Saves hours of manual typing every time your backend API changes.
- Requires Node.js 22.18 or newer to run natively.
- Generated code can be verbose if your OpenAPI specification is massive.
- Configuring custom output templates takes time to learn.
Writing manual fetch requests and TypeScript interfaces by hand
TanStack Query
- openapi-ts/openapi-typescript8.4k stars
Generates TypeScript types from OpenAPI files without the framework-specific query hooks.
- swagger-api/swagger-codegen18k stars
Official generator that supports dozens of programming languages beyond TypeScript.
- evanw/esbuild40k stars
Joins many JavaScript, TypeScript and CSS files into one, in well under a second.
- Textualize/textual38k stars
Lets a Python program draw a real interface inside a terminal, and serve the same thing to a browser.
- python-attrs/cattrs1.1k stars
Turns loose data into declared Python objects, and declared objects back into loose data.
npm install -D orval npx orval --config orval.config.ts