Cloudflare's component library for building modern web applications.
Kumo is Cloudflare's component library for building web application interfaces with accessible, design-system-compliant UI elements. Developers use it to add components with built-in keyboard navigation, focus management, and ARIA attributes, while advanced users can access re-exported Base UI primitives. Catalogue add-ons support the library's development workflow.
This repository also configures its own agents. See what kumo tells them →
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Cloudflare product design guidance. Use when designing, implementing, or reviewing Cloudflare dashboard interfaces, Kumo UI, responsive styling, dialogs, or frontend tests.