Stitch 2026 05 04

Stitch (Google Labs)

Overview

Stitch is a Google Labs experiment that generates high-fidelity UI designs and frontend code from natural language prompts and images. Powered by Gemini models, it transforms text descriptions or wireframe sketches into interactive, responsive interfaces.

The platform supports an AI-native infinite canvas where designers can explore ideas, iterate with voice commands, and collaborate with an embedded design agent. Designs can be exported as HTML/CSS, pasted to Figma, or connected to coding agents via MCP for automated implementation.

Key integrations:

• MCP server — exposes Stitch tools to AI coding agents (Claude Code, Cursor, Gemini CLI, etc.)
• TypeScript SDK (@google/stitch-sdk) — programmatic API for projects, screens, and design systems
• CLI (@_davideast/stitch-mcp) — local preview, site building, interactive browsing
• DESIGN.md — agent-readable design system format for cross-project consistency

When to Use

• Generating UI designs from natural language descriptions or image inputs
• Creating multi-screen applications through iterative prompting
• Connecting Stitch to AI coding agents via MCP for automated design-to-code workflows
• Programmatically generating, editing, and exporting screens via the TypeScript SDK
• Maintaining design system consistency across projects with DESIGN.md
• Building complete websites by mapping generated screens to routes
• Extracting design DNA (colors, typography, layout patterns) from existing designs

Core Concepts

Projects and Screens

A project is a container for related UI screens. Each project has an ID and can hold multiple screens. A screen is a single generated UI page with associated HTML/CSS code and a screenshot image.

Project → Screens (1:N)
  ├─ Screen 1: Landing page
  ├─ Screen 2: Dashboard
  └─ Screen 3: Settings

Device Types

Screens target specific device form factors:

• MOBILE — phone-sized layouts
• DESKTOP — wide-screen layouts
• TABLET — medium-width layouts
• AGNOSTIC — responsive, device-independent

Mobile UIs tend to produce higher quality results than desktop.

Generation Models

Two Gemini models power screen generation:

• GEMINI_3_PRO — higher quality, slower
• GEMINI_3_FLASH — faster, good for exploration

Design Systems

Stitch supports design systems via DESIGN.md — a markdown file with YAML front matter containing machine-readable design tokens (colors, typography, spacing, rounded corners) and prose explaining design rationale. Design systems can be created per project and applied across screens for consistency.

Quick Start

Via MCP (recommended for coding agents)

Register the Stitch MCP server in your coding agent's config:

{
  "mcpServers": {
    "stitch": {
      "command": "npx",
      "args": ["@_davideast/stitch-mcp", "proxy"]
    }
  }
}

Then instruct your agent to:

1. Call create_project with a title
2. Call generate_screen_from_text with a prompt and the project ID
3. Call get_screen_code to retrieve the HTML/CSS

Via TypeScript SDK

import { stitch } from "@google/stitch-sdk";

// Create or reference a project
const project = await stitch.projects()[0]; // or stitch.project("project-id")

// Generate a screen from a prompt
const screen = await project.generate(
  "A modern analytics dashboard with charts and stat cards",
  "DESKTOP"
);

// Get the HTML code
const html = await screen.getHtml();

// Edit the screen
const edited = await screen.edit("Make the background dark and add a sidebar");

// Generate variants
const variants = await screen.variants("Try different color schemes", {
  variantCount: 3,
  creativeRange: "EXPLORE",
  aspects: ["COLOR_SCHEME", "LAYOUT"],
});

Via CLI

# Set up authentication (one-time)
npx @_davideast/stitch-mcp init

# Preview all screens from a project locally
npx @_davideast/stitch-mcp serve -p <project-id>

# Build an Astro site from your designs
npx @_davideast/stitch-mcp site -p <project-id>

Advanced Topics

MCP Integration: Platform-specific setup, available tools, authentication methods, virtual tools → MCP Integration

TypeScript SDK Reference: Full API reference for @google/stitch-sdk including classes, methods, AI SDK integration → SDK Reference

CLI Reference: Commands for local preview, site building, interactive browsing, and MCP proxy → CLI Reference

Prompt Engineering: Strategies for generating quality UI from text descriptions, iteration patterns → Prompt Engineering

Design Systems: DESIGN.md format, token types, cross-project consistency, linting → Design Systems

Export Workflows: Figma paste, code export, AI Studio/Antigravity integration, agent skills → Export Workflows