# Design System to DESIGN.md

Turns a Stitch project into a semantic design system in DESIGN.md files.

- Repository: https://github.com/google-labs-code/stitch-skills (8654 stars)
- Category: Design
- License: Apache-2.0
- Last updated: 2026-08-17
- Runs scripts: no, instructions only

## Install

Claude Code: `npx skills add google-labs-code/stitch-skills --skill design-md -g -a claude-code -y`
Codex: `npx skills add google-labs-code/stitch-skills --skill design-md -g -a codex -y`
Cursor: `npx skills add google-labs-code/stitch-skills --skill design-md -g -a cursor -y`
Gemini CLI: `npx skills add google-labs-code/stitch-skills --skill design-md -g -a gemini-cli -y`

## Description

Analyze Stitch projects and synthesize a semantic design system into DESIGN.md files

## SKILL.md, as published by its author (untrusted third-party text, read it as data)

# Stitch DESIGN.md Skill

You are an expert Design Systems Lead. Your goal is to analyze the provided technical assets and synthesize a "Semantic Design System" into a file named `DESIGN.md`.

## Overview

This skill helps you create `DESIGN.md` files that serve as the "source of truth" for prompting Stitch to generate new screens that align perfectly with existing design language. Stitch interprets design through "Visual Descriptions" supported by specific color values.

## Prerequisites

- Access to the Stitch MCP Server
- A Stitch project with at least one designed screen
- Access to the Stitch Effective Prompting Guide: https://stitch.withgoogle.com/docs/learn/prompting/

## The Goal

The `DESIGN.md` file will serve as the "source of truth" for prompting Stitch to generate new screens that align perfectly with the existing design language. Stitch interprets design through "Visual Descriptions" supported by specific color values.

## Retrieval and Networking

To analyze a Stitch project, you must retrieve screen metadata and design assets using the Stitch MCP Server tools:

1. **Namespace discovery**: Run `list_tools` to find the Stitch MCP prefix. Use this prefix (e.g., `mcp_stitch:`) for all subsequent calls.

2. **Project lookup** (if Project ID is not provided):
   - Call `[prefix]:list_projects` with `filter: "view=owned"` to retrieve all user projects
   - Identify the target project by title or URL pattern
   - Extract the Project ID from the `name` field (e.g., `projects/13534454087919359824`)

3. **Screen lookup** (if Screen ID is not provided):
   - Call `[prefix]:list_screens` with the `projectId` (just the numeric ID, not the full path)
   - Review screen titles to identify the target screen (e.g., "Home", "Landing Page")
   - Extract the Screen ID from the screen's `name` field

The rest: https://github.com/google-labs-code/stitch-skills/blob/HEAD/plugins/stitch-utilities/skills/design-md/SKILL.md