AgnosticUI

Copy the source · Own the code · Framework-agnostic · Built for humans and AI agents

One component library. Every framework.

Documentation · Login AI Playbook · Onboarding AI Playbook · Dashboard AI Playbook · Components · Quick Start

Source-first architecture

AgnosticUI components are copied into your project at install time.

They live in your repo (not hidden inside node_modules):

Full control over the source
Native integration with your framework
AI-readable, high-fidelity context

You own the source (and the Context)

cd your-project
npx agnosticui-cli init --framework vue  # or react, lit, svelte
npx agnosticui-cli add Button Card Input

The component source lands directly in your project. Readable, editable, and yours.

src/
components/
ag/
Button/
Button.vue ← your file now
Button.css ← your tokens now
Button.test.ts ← your tests now

Components land under src/components/ag/ by default: a dedicated namespace that keeps AgnosticUI components separate from your own. Configurable if you prefer otherwise.

🤖 AI-Native by Design

Because the code is local, it solves the "Black Box" problem of traditional libraries hidden in node_modules.

Cursor · Claude · Copilot · Windsurf · Aider · Gemini · Replit · Kiro · Antigravity

Every tool sees the raw source. This creates a high-fidelity environment for Generative UI and Agent-driven interfaces:

Reduce Hallucination: No more "invented" props or APIs. Since the LLM reads local files like any other code, it knows exactly what is possible.
Better Token Efficiency: Using semantic HTML and standard CSS provides "clean context." Agents spend fewer tokens to understand the UI, leading to faster, more accurate generations.
Agent Skills: Treat AgnosticUI Playbooks as pre-defined skills. Use them to prompt an agent to scaffold complex, accessible workflows (Login, Onboarding, Discovery Dashboard, Support Center, Data Grids) using the local components it already "sees."

This is the architecture for the next era of development: context-aware, framework-agnostic, and AI-ready.

The schema-driven layer ships with three companion documents:

v2/docs/sdui-architecture.md — full system architecture: codegen pipeline, node graph model, renderers, CI gates, and key design decisions
v2/docs/llm-prompt-guide.md — copy-paste system prompt template and few-shot examples for generating valid AgNode[] graphs
v2/docs/schema-coverage.md — per-component SDUI coverage registry, renderer parity status, and omission reasons

Built once. Runs everywhere.

AgnosticUI's components are authored as Lit Web Components, a standards-based layer over native Custom Elements. The CLI wraps them for your framework at copy time.

AgnosticUI Architecture: AI Playbooks direct the Lit Core, which the CLI ejects into React, Vue, and Svelte

Your design system doesn't fork when your tech stack does. Supports agent-generated UI workflows directly from Playbooks.

...

	AgnosticUI	Typical component library
Source in your repo	✅	❌
Framework agnostic core	✅	❌
LLM-readable locally	✅	❌
AI & agent-driven Playbooks included	✅	❌
Multiple theme skins	✅	Limited
Zero runtime dependency	✅ after ejection	❌

AI Playbooks: AI-Prompt-Driven UI Components

Playbooks (Login Form, Onboarding Wizard, Discovery Dashboard, Support Center, Data Grid, Blog / Article Reader, Landing / Marketing Page) demonstrate modular, prompt-driven UI components. Each Playbook can be used in agent systems, for context-aware applications, or to create generative UI patterns.

Playbook	What it builds
Login Form	Responsive login: mobile, floating card, two-column desktop; works with AI prompt-driven generation
Onboarding Wizard	Multi-step flow with progress, validation, and skip logic; supports agent-assisted workflows
Discovery Dashboard	Dashboard shell with header, sidebar, and data regions — ideal for agent-generated interfaces
Support Center	Help center with search, categories, and article layout; integrates with prompt-driven workflows
Data Grid	Responsive, interactive data grid with sorting, filtering, and multiple view modes; compatible with agent-driven and context-aware interfaces
Blog / Article Reader	Typography-first editorial layout with scroll-aware components and in-article search highlighting; theme switcher, dark/light mode, React/Vue/Lit demos
Landing / Marketing Page	Polished product marketing page with hero, features, testimonials, pricing, and FAQ; animated components, theme switcher, dark/light mode, React/Vue/Lit demos

Each Playbook on the docs site includes live StackBlitz examples for React, Vue, and Lit, and ships with:

PROMPT-3-FRAMEWORKS.md: one prompt to generate the pattern across all three frameworks
Skin switcher to preview your theme tokens instantly

Fully prompt-ready for agent-driven UI generation. Drop a Playbook prompt into Cursor, Claude Code, or Copilot and watch it assemble Input, Button, Card, and FormGroup correctly on the first try — because it has the full recipe, not just a component reference.

The prompts are yours to adapt. Feed one to your LLM as a crash course in AgnosticUI's patterns, fork it for your own stack, or use it as a blueprint for writing Playbooks around your own UI patterns.

Theme skins via CSS custom properties

AgnosticUI components expose their entire visual surface through CSS custom properties. Swap a skin and every component updates; no code changes, no find-and-replace.

/* Base tokens are required, then layer your skin on top */
@import "./components/ag/styles/ag-tokens.css";
@import "./components/ag/styles/ag-tokens-dark.css";
@import "./components/ag/styles/brutalist-light.css";
@import "./components/ag/styles/brutalist-dark.css";

Hand it to a designer. Get back a token file. Import it. Done.

Quick Start

React

cd my-react-app
npx agnosticui-cli init --framework react
npx agnosticui-cli add Button Card Input

Vue

cd my-vue-app
npx agnosticui-cli init --framework vue
npx agnosticui-cli add Button Card Input

Svelte

cd my-svelte-app
npx agnosticui-cli init --framework svelte
npx agnosticui-cli add Button Card Input

Lit / Web Components directly

cd my-lit-app
npx agnosticui-cli init --framework lit
npx agnosticui-cli add Button Card Input

After running add, your terminal prints the exact import path for your project. No guessing. Supports agent-driven and prompt-ready UI workflows.

Accessibility first, not last

Semantic HTML
WAI-ARIA patterns validated
Keyboard navigation across all interactive components
AA-validated color contrast
Reduced motion support
Focus management built in

55 components. Production-ready.

Core UI

Accordion · Alerts · AspectRatio · Avatar · Badge · Breadcrumb · Button · Card · Checkbox · Collapsible · Combobox · CopyButton · Dialog · Divider · Drawer · EmptyState

Forms & Inputs

Fieldset · Input · Radio · Rating · Select · SelectionButtonGroup · SelectionCardGroup · Slider · Toggle

Navigation & Layout

Header · Menu · Pagination · Tabs

Feedback & Status

Loader · Progress · ProgressRing · ScrollProgress · Skeleton Loader · Spinner · Toast

Content & Display

Icon · Icon Button · Image · IntlFormatter · Kbd · Link · Mark · MessageBubble · Popover · ScrollToButton · Table · Tag · Timeline · Tooltip · VisuallyHidden

Lab (experimental)

BadgeFx · ButtonFx · Flex · IconButtonFx

Contributing

AgnosticUI is open source and welcomes contributions. See CONTRIBUTING.md for component authoring guidelines, the token system, and how to write Playbook entries.

License

Apache License 2.0 © AgnosticUI

Where is v1?

AgnosticUI v2 is a complete rewrite and is not compatible with v1. If you need v1, it remains available via git tags:

Packages: agnostic-angular, agnostic-react, agnostic-vue, agnostic-svelte, etc.
Tag: v1-legacy