21st.dev Magic MCP — Instalar & Demo en vivo

Por qué usarlo

Características clave

v0-style component generation backed by 21st.dev's library
shadcn/ui, Tailwind, and Framer Motion patterns
Refine an existing component in place
Browse 5000+ pre-made components
Free tier with paid scaling

Demo en vivo

Cómo se ve en la práctica

magic-mcp.replay ▶ listo

0/0

Instalar

Elige tu cliente

~/Library/Application Support/Claude/claude_desktop_config.json · Windows: %APPDATA%\Claude\claude_desktop_config.json

{
  "mcpServers": {
    "magic-mcp": {
      "command": "npx",
      "args": [
        "-y",
        "@21st-dev/magic@latest"
      ]
    }
  }
}

Abre Claude Desktop → Settings → Developer → Edit Config. Reinicia después de guardar.

~/.cursor/mcp.json · .cursor/mcp.json

{
  "mcpServers": {
    "magic-mcp": {
      "command": "npx",
      "args": [
        "-y",
        "@21st-dev/magic@latest"
      ]
    }
  }
}

Cursor usa el mismo esquema mcpServers que Claude Desktop. La configuración del proyecto prevalece sobre la global.

VS Code → Cline → MCP Servers → Edit

{
  "mcpServers": {
    "magic-mcp": {
      "command": "npx",
      "args": [
        "-y",
        "@21st-dev/magic@latest"
      ]
    }
  }
}

Haz clic en el icono MCP Servers de la barra lateral de Cline y luego en "Edit Configuration".

~/.codeium/windsurf/mcp_config.json

{
  "mcpServers": {
    "magic-mcp": {
      "command": "npx",
      "args": [
        "-y",
        "@21st-dev/magic@latest"
      ]
    }
  }
}

Mismo formato que Claude Desktop. Reinicia Windsurf para aplicar.

~/.continue/config.json

{
  "mcpServers": [
    {
      "name": "magic-mcp",
      "command": "npx",
      "args": [
        "-y",
        "@21st-dev/magic@latest"
      ]
    }
  ]
}

Continue usa un array de objetos de servidor en lugar de un mapa.

~/.config/zed/settings.json

{
  "context_servers": {
    "magic-mcp": {
      "command": {
        "path": "npx",
        "args": [
          "-y",
          "@21st-dev/magic@latest"
        ]
      }
    }
  }
}

Añádelo a context_servers. Zed recarga en caliente al guardar.

claude mcp add magic-mcp -- npx -y @21st-dev/magic@latest

Un solo comando. Verifica con claude mcp list. Quita con claude mcp remove.

Casos de uso

Usos del mundo real: 21st.dev Magic MCP

Generate a polished landing-page hero in under a minute

👤 Frontend engineers shipping fast ⏱ ~15 min intermediate

Cuándo usarlo: You need a hero section right now and don't want to start from a blank file.

Requisitos previos

Server/skill installed and authenticated — See repo README

Flujo

Search for inspiration

Search 21st for hero sections that mix gradient + product screenshot.✓ Copiado

→ 5–10 starter components
Generate the final one

Create a Hero component: dark gradient bg, headline 'Ship faster.' subhead 'AI for serious teams.' a primary CTA + secondary CTA, social proof row.✓ Copiado

→ A complete tsx file using shadcn primitives

Resultado: A real production-shape component in one prompt.

Errores comunes

Generated components assume shadcn primitives are installed — Generated components assume shadcn primitives are installed — run npx shadcn add button card first.

Combinar con: filesystem · flyonui-mcp

Combinaciones

Combínalo con otros MCPs para multiplicar por 10

magic-mcp + filesystem

Pair with filesystem for complementary capabilities

Use this server together with filesystem to complete a multi-step task.✓ Copiado

magic-mcp + flyonui-mcp

Pair with flyonui-mcp for complementary capabilities

Use this server together with flyonui-mcp to complete a multi-step task.✓ Copiado

Herramientas

Lo que expone este MCP

Herramienta	Entradas	Cuándo llamar	Coste
create_component	description, framework	Need a new UI component	21st credits
refine_component	component_code, instruction	Tweak an existing component	21st credits
search_components	query	Find a pre-made starting point	1 API call

Coste y límites

Lo que cuesta ejecutarlo

Cuota de API: See provider docs for rate limits
Tokens por llamada: Varies by tool
Monetario: See repo README for pricing details
Consejo: Cache tool results and avoid repeated identical calls.

Seguridad

Permisos, secretos, alcance

Almacenamiento de credenciales: Use environment variables; never commit secrets

Salida de datos: Tool calls go to the provider's API as documented

Resolución de problemas

Errores comunes y soluciones

API key invalid

Get a key at 21st.dev/settings/api and set TWENTY_FIRST_API_KEY.

Verificar: search_components returns results

component uses missing shadcn import

Run npx shadcn add <component> for each unresolved import.

Verificar: Vite/Next builds cleanly

Alternativas

21st.dev Magic MCP vs otros

Alternativa	Cuándo usarla	Contrapartida
v0.dev	You prefer the v0 web UI	Outside your editor; different style

Más

Recursos

📖 Lee el README oficial en GitHub

🐙 Ver issues abiertas

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