design
The canonical 12ui CLI, SDK, MCP server, and visual interface design skills
Install design in your MCP client
design is a Model Context Protocol server. Add it to your MCP client config once, restart, and the server's tools become available to your AI assistant. The same JSON snippet below works across all four major clients — only the config file path differs.
- Locate your client's MCP config file.
- Cursor:
~/.cursor/mcp.json - Claude Desktop (macOS):
~/Library/Application Support/Claude/claude_desktop_config.json - Claude Desktop (Windows):
%APPDATA%\Claude\claude_desktop_config.json - VS Code:
Settings → Extensions → MCP - Windsurf:
Settings → MCP Servers
- Cursor:
- Add design to the mcpServers map — paste the snippet below into your config file. If you already have other MCP servers, merge the entry into the existing
mcpServersobject. - Restart your client so it picks up the new server.
- Verify — ask the assistant to list available tools; design's tools should appear.
{
"mcpServers": {
"design": {
"command": "npx",
"args": [
"-y",
"@12ui/design"
]
}
}
}Install design in Cursor
Open ~/.cursor/mcp.json in your editor, paste the snippet above into mcpServers, save, and restart Cursor. design will show up in the assistant's tool list on next launch.
Install design in Claude Desktop (macOS)
Open ~/Library/Application Support/Claude/claude_desktop_config.json in your editor, paste the snippet above into mcpServers, save, and restart Claude Desktop (macOS). design will show up in the assistant's tool list on next launch.
Install design in Claude Desktop (Windows)
Open %APPDATA%\Claude\claude_desktop_config.json in your editor, paste the snippet above into mcpServers, save, and restart Claude Desktop (Windows). design will show up in the assistant's tool list on next launch.
Install design in VS Code
Open Settings → Extensions → MCP in your editor, paste the snippet above into mcpServers, save, and restart VS Code. design will show up in the assistant's tool list on next launch.
npm package: @12ui/design
Transport
design supports the following MCP transports. Most AI clients use stdio by default for locally-installed servers.
From the design README
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Browse the full MCP server directory or use Stork's one-line install to let your agent pick the right server automatically.
