A design workflow add-on that connects a coding agent to Google Stitch, a tool for generating user-interface screens, and guides work from ideas and research to code.

It helps create design ideas, design specifications, screen variants, and interface code for Next.js, Svelte, React, React Native, SwiftUI, or plain HTML.

It gives the agent a defined process for planning and creating multi-screen interfaces instead of producing disconnected or poorly designed screens.

stitch-kit — Plugin by gabelul

Install

Getting it into your agent

One page per mod, every tool's command on it. A separate URL per tool would split the same page into five that compete with each other.

Claude Code

/plugin marketplace add gabelul/stitch-kit

agentmods

npx agentmods add plugins/gabelul/stitch-kit/marketplace

Clone the repo

git clone --depth 1 https://github.com/gabelul/stitch-kit

Made for: Claude Code.

Per session not measured What this adds to a session before it is invoked.

When invoked not measured Not applicable: nothing here is loaded into a session.

Security scan A 0 findings. Scan, not verified.

Origin original No closer match found in the catalogue.

Security

Grade A, and why

stitch-kit scanned grade A with 0 findings against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured yesterday.

A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.

Nothing flagged

None of the 26 patterns this scan looks for appear in this file: no shell pipes, no recursive deletes, no credential paths, no hidden text, no instruction-override or anti-refusal phrasing, no agent-config snooping. That is not a guarantee, it is the absence of the things that are checkable.

.claude-plugin/marketplace.json · 57 lines

How it starts

The opening of the file, as written. The whole thing — 57 lines — stays where its author put it; the contents beside it link to each section on GitHub.

{
  "name": "stitch-kit",
  "owner": {
    "name": "gabelul"
  },
  "metadata": {
    "description": "Your agent designs terrible UI. stitch-kit wires it into Google Stitch MCP and teaches it the whole pipeline — ideation, research, multi-screen generation, design systems, and shipping to Next.js, Svelte, React, React Native, SwiftUI, or HTML.",
    "version": "1.12.0"
  },
  "plugins": [
    {
      "name": "stitch-kit",
      "description": "Everything — all 36 skills in one install.",
      "source": "./",
      "strict": true,
      "skills": [
        "./skills/stitch-orchestrator",
        "./skills/stitch-ideate",
        "./skills/stitch-ui-design-spec-generator",
        "./skills/stitch-ui-prompt-architect",
        "./skills/stitch-ui-design-variants",
        "./skills/stitch-ued-guide",
        "./skills/stitch-mcp-create-project",
        "./skills/stitch-mcp-list-projects",
        "./skills/stitch-mcp-get-project",
        "./skills/stitch-mcp-generate-screen-from-text",
        "./skills/stitch-mcp-list-screens",
        "./skills/stitch-mcp-get-screen",
        "./skills/stitch-mcp-delete-project",
        "./skills/stitch-mcp-edit-screens",
        "./skills/stitch-mcp-generate-variants",
        "./skills/stitch-mcp-create-design-system",
        "./skills/stitch-mcp-update-design-system",
        "./skills/stitch-mcp-list-design-systems",
        "./skills/stitch-mcp-apply-design-system",
        "./skills/stitch-mcp-upload-design-md",
        "./skills/stitch-mcp-create-design-system-from-design-md",
        "./skills/stitch-nextjs-components",
        "./skills/stitch-svelte-components",
        "./skills/stitch-react-components",
        "./skills/stitch-html-components",
        "./skills/stitch-shadcn-ui",
        "./skills/stitch-loop",
        "./skills/stitch-remotion",
        "./skills/stitch-react-native-components",
        "./skills/stitch-swiftui-components",
        "./skills/stitch-design-md",
        "./skills/stitch-design-syst

Read the full file on GitHub · 57 lines

Files

What ships with it

1 file beside marketplace.json in the same directory: the scripts, references and assets a skill reads on demand. Not counted in the per-session cost; read them before you install if any of them is executable.

plugin.json 400 B

Changes

What this file has done since we first saw it

Hashed on every crawl. A supply-chain change to an agent config is a question of when, not whether, so the history is kept rather than the latest state alone.

yesterday First seen · 57 lines scan A 5f6dff841e38

Subscribe to this mod's changes

stitch-kit is a plugin published in the GitHub repository gabelul/stitch-kit (43 stars, last pushed 1mo ago), licensed Apache-2.0. Its token cost is not measured: this kind of file is read by the harness, not the model. A static security scan graded it A with 0 findings. No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-30.

Frontend Mobile Research claude-code claude-code-plugin design-to-code nextjs react-native stitch

stitch-kit

Getting it into your agent

Grade A, and why

Nothing flagged

How it starts

What ships with it

What this file has done since we first saw it

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