Zudoku
Zudoku is a free, open-source framework for building API documentation and developer portals around OpenAPI.
What Zudoku is
Zudoku is a free, open-source framework for building API documentation and developer portals around OpenAPI. It generates documentation from one or more OpenAPI schemas and supports MDX pages for additional material. Its interactive playground lets readers try API calls, including authenticated requests using OpenID or OAuth2. Built-in search is powered by tools such as Pagefind and Inkeep, and documentation can be shipped as static pages. Teams can adjust themes and colors, use light or dark modes, add custom CSS, and extend the framework with plugins of their own. Sites can be hosted in different environments, including self-hosted deployments. Listed uses include standalone documentation sites, API references, developer portals, and internal documentation. Zudoku is MIT licensed and described as remaining free and open source. Getting started requires Node.js 22.12.0 or later, or version 20.19 or later. The maker directs users to its Discord community for support and tips.
Good
- Generates documentation from one or multiple OpenAPI schemas.
- Interactive API calls can use authentication.
- Themes, colors, and CSS are customizable.
- MIT licensed and free to use.
Watch out
- Setup requires Node.js 22.12.0+ or 20.19+.
- Support and tips are directed through a Discord community.
Who it suits
It suits developers and teams creating API references, developer portals, or internal documentation from OpenAPI schemas. It may also fit teams that want to self-host and customize their documentation site.
Verdict
Zudoku offers an open-source route to customizable OpenAPI documentation with an interactive playground. Check the Node.js prerequisite and hosting setup against your team's environment.
Plans and prices
From Zudoku's own pricing page, checked 3 Oct 2026.
| Plan | Price | What it gives you |
|---|---|---|
| Free | Free | Open-source · MIT licensed · Self-hostable |
The facts
Each one read from Zudoku's own pages, with the date it was checked.
What it does
- Authentication
- It supports authentication through OpenID or OAuth2, and its interactive API playground includes authentication.checked 3 Oct 2026
- Custom content
- It supports MDX pages for documenting additional content.checked 3 Oct 2026
- Customization
- Users can customize themes and colors, including light and dark modes, and add custom CSS.checked 3 Oct 2026
- Deployment
- The maker says Zudoku sites can be hosted anywhere and documents deploying a site when it is ready to go live.checked 3 Oct 2026
- Extensibility
- Zudoku supports plugins and allows users to create their own.checked 3 Oct 2026
- Intended use
- Listed use cases include standalone documentation sites, API references, developer portals, and internal documentation.checked 3 Oct 2026
- Interactive testing
- The integrated playground lets users test API calls, including authenticated calls.checked 3 Oct 2026
- OpenAPI support
- It generates documentation from one or multiple OpenAPI schemas.checked 3 Oct 2026
- Search
- The product site describes built-in search powered by tools such as Pagefind and Inkeep.checked 3 Oct 2026
- Setup requirement
- The quickstart lists Node.js 22.12.0+ or 20.19+ as a prerequisite.checked 3 Oct 2026
- Static pages
- The product site says Zudoku can ship documentation as static pages.checked 3 Oct 2026
- Support
- The maker directs users to its Discord community for support and tips.checked 3 Oct 2026
- What it does
- Zudoku is an open-source framework for building API documentation and developer portals around OpenAPI.checked 3 Oct 2026
Money
- License and cost
- The repository says Zudoku is MIT licensed and will always be free and open source.checked 3 Oct 2026
