OPEN SOURCE PROTOCOL

User Interface Context Protocol

The missing contract between AI and your interface. Build deterministic, context-aware generative UI that scales from prototype to production.

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MIT License•TypeScript•v1.0.0

BY THE NUMBERS

Built for Production

100%
Deterministic Rendering
Zero
Component Hallucinations
Type-Safe
Schema Validation
Universal
Framework Agnostic
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THE PROBLEM

Generative UI Shouldn't Be This Hard

Current approaches to AI-driven interfaces are brittle, unpredictable, and impossible to maintain at scale:

Models hallucinate component names and invent non-existent APIs
Brittle parsing logic breaks with every model update
No single source of truth between frontend and LLM context
Custom glue code for every UI component integration
Security nightmares from executing unvalidated model output
Impossible to maintain consistency across conversations

UICP provides the missing contract—a structured protocol that makes your components discoverable, deterministic, and safe for AI to use.

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FEATURES

Why UICP?

Stop fighting with brittle parsing logic and model hallucinations. UICP provides a structured contract between your AI and your interface.

UID-Based Component Mapping

Each UI element gets a globally unique identifier and machine-readable schema. Models reference components via UIDs, guaranteeing determinism and eliminating hallucinations.

Unified UI Definitions

All component metadata—description, schema, file path, and examples—live in a single source of truth. Keep your LLM and frontend perfectly aligned without custom glue code.

UI Options Tooling

Models gain introspection tools to query available components and generate validated UI blocks. Replace prompt-guessing with grounded discovery.

Deterministic Rendering

Standardized UICP blocks encode component UIDs and data. Your frontend parses and renders them safely and predictably, every time.

HOW IT WORKS

Simple. Powerful. Universal.

Define your components once, and they become instantly accessible to any AI system.

Define Your Component

{
  "uid": "button-primary",
  "name": "Primary Button",
  "description": "A primary action button",
  "schema": {
    "type": "object",
    "properties": {
      "label": { "type": "string" },
      "onClick": { "type": "string" }
    }
  }
}

AI Generates Valid UI

<uicp uid="button-primary">
{
  "label": "Get Started",
  "onClick": "navigate(/docs)"
}
</uicp>

USE CASES

Build the next generation of AI interfaces

From chatbots to dashboards, UICP powers deterministic UI generation across every use case

AI Chatbots

Build chat interfaces where the AI can dynamically generate validated UI components in response to user queries.

Generative Dashboards

Create adaptive dashboards where layouts and visualizations respond to natural language requests.

Design Systems

Make your component library AI-discoverable with machine-readable schemas and examples.

Developer Tools

Build AI-powered dev tools that can scaffold, modify, and reason about UI code.

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ARCHITECTURE

Three Interoperable Layers

UICP connects model reasoning, bridge infrastructure, and surface rendering through a single unified schema.

1

Model Layer

UI Options Tooling

Expose real-time component definitions; generate valid UI instructions.

2

Bridge Layer

UI Bridge API

Serve component definitions to models dynamically (via local or remote API).

3

Surface Layer

Parser and Renderer

Detect, validate, and render UICP blocks into live UI elements.

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OPEN SOURCE

Built by Indigo AI Labs

UICP is developed and maintained by a dedicated team of engineers building the future of AI-powered interfaces.

Stefan Johnson
Corey Epstein
Lizzie Liu
Yousuf Kalim
Zahin Afsar
Shawon Majid
Background

Ready to build deterministic AI interfaces?

Join developers building the future of generative UI with open-source tools designed for production.

Get StartedStar on GitHub