Base UI Overview and Quick Start

This is the entry point for Base UI knowledge in Kuzenbo. Use it before touching a specific component to confirm assumptions, version scope, and ownership.

Scope

• Overview docs: Quick start, accessibility, releases, about page
• Global index references: Handbook/handbook entries, components, utilities
• Baseline release evidence for drift checks and compatibility gates

Routing cues

• "what is Base UI", "quick start", "release notes", "about Base UI", "how to set up portal stacking", "what is in v1.2.0" → this skill
• "unstyled", "styling strategy", "customize behavior", "form patterns" with no concrete component → route to handbook/domain skills
• Concrete component/unified utility questions → route to the owning skill from references/coverage-matrix.md

Canonical references

• https://base-ui.com/react/overview/quick-start
• https://base-ui.com/react/overview/accessibility
• https://base-ui.com/react/overview/releases
• https://base-ui.com/react/overview/about
• https://base-ui.com/react/handbook/styling
• https://base-ui.com/react/handbook/composition
• https://base-ui.com/react/handbook/customization
• https://base-ui.com/react/handbook/forms
• https://base-ui.com/react/handbook/typescript
• https://base-ui.com/react/overview/releases/v1-2-0
• https://base-ui.com/llms.txt

Key operating rules

• Base UI is unstyled and composition-first; render, className, and style state callbacks are primary extension points.
• Portals should be layered with app shell isolation: isolate guidance from quick start.
• Accessibility remains opt-in beyond base semantics: labels/role attributes/keyboard behavior still need explicit integration in app-level UI.

Maintenance

• Snapshot date: 2026-02-13
• Release anchor snapshot: 1.2.0 (2026-02-12)
• Refresh cadence: quarterly or on @base-ui/react dependency update
• Upstream changelog anchor: https://github.com/mui/base-ui/blob/master/CHANGELOG.md

References

• Source map
• Release snapshot
• Coverage matrix