Open Design
Local-first design app · 139 skills + 150 DESIGN.md systems · exposes projects/files/preview tools to your coding agent over stdio MCP.…
- Type
- Plugin
- Repository
- nexu-io/open-design
- GitHub stars
- 98.3k
- License
- Apache-2.0
- Repo last updated
- Sep 27, 2026
What Open Design is
Open Design is a plugin published in the nexu-io/open-design repository on GitHub, which has about 98.3k stars. The repository describes itself as: “🎨 Best DeepSeek Harness Design Plugin. The open-source Claude Design alternative. 🖥️ Local-first desktop app. 🖼️ Your coding agent becomes the design engine: prototypes, landing pages, dashboards, slides, images & video — real files, HTML/PDF/PPTX/MP4 export. 🤖 Claude Code / Codex / Cursor / DeepSeek Harness / OpenCode & 20+ CLIs via BYOK.”
A plugin is a package that bundles skills, slash commands, subagents, hooks, and MCP connectors so they install together. Plugins are plain files with a manifest at .claude-plugin/plugin.json, and they work in both Claude Code and Claude Cowork.
Installing Open Design adds everything it ships in one step. Connectors inside a plugin still need to be connected separately, and hooks and subagents only run in Cowork and Claude Code, not in regular chat.
How to install Open Design
Claude Code
- Add the repository as a plugin marketplace: claude plugin marketplace add nexu-io/open-design
- Install the plugin: claude plugin install open-design@<marketplace-name>, using the marketplace name from the repository's .claude-plugin/marketplace.json.
- Restart the session if the new skills or commands don't appear straight away.
Claude Cowork
- Open Customize → Plugins and choose Add marketplace.
- Enter nexu-io/open-design (the owner/repo shorthand works for GitHub).
- Find Open Design in the list, click Install, then connect any connectors it needs from its Connectors tab.
New to extending Cowork? Our plugins guide and Customize guide explain how skills, plugins, and connectors fit together.
Inside the source file
We couldn't retrieve the source file for this entry. Browse the repository on GitHub to find it and read the README before installing.
Before you install
- Read the whole file first. Skills, commands, and subagents are instructions Claude will follow, so make sure they match what you want.
- Check which tools, scripts, or MCP servers it uses. Local servers and scripts run with your permissions.
- Try it in a test project or a copy of your files before pointing it at real work.
- Pin the version you tested, and review changes before updating.
- Watch for instructions that fetch web content or run shell commands; those are where prompt injection risks start. See our prompt injection guide.
FAQ
What is Open Design?
Open Design is a plugin for Claude Code and Claude Cowork from the nexu-io/open-design repository on GitHub. Local-first design app · 139 skills + 150 DESIGN.md systems · exposes projects/files/preview tools to your coding agent over stdio MCP.…
How do I install Open Design in Claude Code?
Add the repository as a plugin marketplace: claude plugin marketplace add nexu-io/open-design Install the plugin: claude plugin install open-design@<marketplace-name>, using the marketplace name from the repository's .claude-plugin/marketplace.json. Restart the session if the new skills or commands don't appear straight away.
Can I use Open Design in Claude Cowork?
Open Customize → Plugins and choose Add marketplace. Enter nexu-io/open-design (the owner/repo shorthand works for GitHub). Find Open Design in the list, click Install, then connect any connectors it needs from its Connectors tab.
Is Open Design safe to install?
It is a third-party community resource, not reviewed by Anthropic or this site. Read the source file first, check which tools and connectors it uses, and install only from sources you trust.
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