Kubb is a TypeScript-based meta framework for code generation that outputs type-safe TS, Zod validators, and TanStack/React Query hooks from OpenAPI schemas. It uses a plugin-based engine and offers OpenAPI adapters and multiple deployment bindings.
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What it is
Kubb is a meta framework for code generation. Point Kubb at a schema and it generates types, clients, hooks, validators, mocks, and more.
How it works
Kubb outputs TypeScript types, type-safe clients, TanStack Query and SWR hooks, Zod validators, Faker mocks, and MSW handlers from a schema. It supports generating a typed axios or Fetch client with features like status-keyed results, auth, validation, file uploads, server-sent events, interceptors, and a pluggable transport. It can read OpenAPI 2.0, 3.0, and 3.1 via adapters such as @kubb/adapter-oas, for Node.js and Bun. Plugins can be enabled selectively (e.g., plugin-ts, plugin-axios, plugin-react-query, plugin-zod, plugin-msw, etc.). Output can be grouped by tag and written to disk, memory, or a custom storage backend. It also provides a toolkit to build custom plugins, generators, adapters, and a JSX renderer for component-based output. Generation can be run in bundlers with unplugin-kubb for Vite, Nuxt, Astro, Webpack, and more. AI-driven generation can be driven via MCP server or Claude Code.
Getting started
Install via npm, pnpm, or bun, then run the setup wizard and generation commands as shown:
bun add kubb
# or
pnpm add kubb
# or
npm install kubb
npx kubb init
npx kubb generate
See the documentation for detailed usage and advanced features.
Recent releases
Latest releases include:
- unplugin-kubb@5.0.30 (2026-08-04): Patch Changes; updated dependencies to @kubb/core@4.39.3
- kubb@3.2.3 (2026-08-04): Patch Changes; updated dependencies to @kubb/core@4.39.3, @kubb/cli@4.39.3, @kubb/mcp@4.3
- @kubb/plugin-zod@4.39.3 (2026-08-04): Patch Changes; updated dependencies to @kubb/core@4.39.3, @kubb/oas@4.39.3
- @kubb/plugin-vue-query@4.39.3 (2026-08-04): Patch Changes; updated dependencies to @kubb/core@4.39.3, @kubb/oas@4.39.3
- @kubb/plugin-ts@4.39.3 (2026-08-04): Patch Changes; updated dependencies to @kubb/core@4.39.3, @kubb/oas@4.39.3
Traction
1768 stars, 146 forks, 10 open issues as of latest data.
Behind the repo
Maintained by kubb-labs; repository focuses on code generation tooling with a modular plugin system and adapters for OpenAPI.
Caveats
License: MIT. Created 2023-01-08. Last push 2026-08-04. Language: TypeScript. Open issues: 10.