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open-design

Skill32 starsChanged 6 months agoMITView on GitHub

Open-source, local-first alternative to Claude Design. A daemon plus web UI or desktop app that runs design skills (web prototypes, SaaS landing pages, dashboards, mobile onboarding, decks, email, social carousels, posters, motion frames, sprite animation) and brand-grade design systems on top of your own coding-agent CLI or API key.

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SKILL.md

open-design

Catalogue stub — full platform: nexu-io/open-design

<!-- das:install:start — generated from stub.yaml by `npm run generate`; edit stub.yaml, not this block -->

Install

Open Design is an application (a local daemon with a web UI, an optional desktop app and an MCP server), not a skill the skills CLI can install. Pick one route. Desktop app (macOS Apple Silicon or Intel, Windows x64): download it from open-design.ai or github.com/nexu-io/open-design/releases; no Node, pnpm or clone needed. From source (the only route on Linux; needs Node ~24 and pnpm 10.33.x): git clone https://github.com/nexu-io/open-design.git && cd open-design && corepack enable && pnpm install && pnpm tools-dev run web, then open the URL it prints (the repository is about 3.4 GB, so add --depth 1 to the clone to shorten the download). Inside your own coding agent: run od mcp install claude (use codex, cursor, opencode and so on for other agents) to connect it to Open Design over MCP; on a macOS desktop install od can resolve to /usr/bin/od (octal dump), so copy the snippet from Settings, MCP server in the app instead.

Heads-up

  • Requires: a coding-agent CLI on your PATH (Claude Code, Codex, Cursor Agent and others) or a BYOK model API key set in the app's Settings; Node ~24 and pnpm 10.33.x, only for the from-source route
  • License: Apache-2.0
<!-- das:install:end -->

Invoke after install

Once an agent is connected over MCP, ask it in plain language, for example "Use open-design to generate a landing page with the Linear design system". In the desktop or web app, type a brief in the entry view, choose a runtime, a design template and a design system, and press Send. The daemon prints its local URL when it starts (from source, development ports are allocated dynamically).

What it does

A local-first design product. It detects the coding-agent CLIs on your PATH (or uses a BYOK API key), loads a large catalogue of functional design skills, rendering templates and design systems, and streams the generated files into a sandboxed preview. Output covers web prototypes, SaaS landing pages, dashboards, mobile onboarding flows, decks, email templates, social carousels, posters, motion frames and sprite animation. Self-hosted, with no vendor lock-in, and an MCP server so other agents can read your Open Design projects.

When NOT to use

  • Single-skill tasks where the platform overhead isn't warranted (install the individual skill directly, for example design-brief for briefs)
  • Cloud-only environments (CI, serverless) or machines where you cannot run a persistent local process
  • Linux desktops expecting a prebuilt app (there is none yet; the from-source route is the only one)

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