Zudoku is an open-source, developer-first platform for creating clean, consistent API documentation built on a modern stack including React, TypeScript, and Vite. The tool enables developers to auto-generate documentation from OpenAPI v2/v3 schemas (supporting both single and multi-API setups) and provides built-in authentication and authorization support for OAuth2, JWT, and more. Zudoku features an interactive playground for testing endpoints live with API keys and authentication, instant intelligent search powered by tools like Pagefind and Inkeep, and static site generation for fast, SEO-friendly documentation that can be hosted anywhere. The platform supports MDX for generating documentation from markdown files, offers supercharged plugin integration with both community and core plugins plus easy extensibility for custom creations, and includes a full suite of ready-to-use reusable components for building the ideal developer experience. With just three quick steps—installing via npm, adding your OpenAPI schema, and customizing with flexible theming and branding options—developers can go from zero to powerful API docs in minutes, making it suitable for both external API documentation and internal tools for faster development workflows.