What is the key difference between 21st.dev and Magic MCP?

21st.dev belongs to the Developer Tools category with cloud HTTP/SSE execution, while Magic MCP belongs to the Developer Tools category with local stdio execution.

How do I install 21st.dev or Magic MCP in Claude Desktop or Cursor?

Copy the mcpServers JSON configuration snippet provided on this page into your claude_desktop_config.json or ~/.cursor/mcp.json file and restart your AI client.

Are 21st.dev and Magic MCP free or paid?

21st.dev operates under a Free / Open Source model (No auth required). Magic MCP operates under a Paid Service model (API Key required).

Which MCP server has more tools and community activity?

21st.dev lists 0 tools with 0 views and 0 GitHub stars. Magic MCP lists 5 tools with 13 views and 5,634 GitHub stars.

Can I use both 21st.dev and Magic MCP together in the same MCP host?

Yes! MCP hosts like Claude Desktop, Cursor, Windsurf, Cline, and VS Code support configuring multiple servers under the mcpServers object simultaneously.

How do I install 21st.dev or Magic MCP in Claude Desktop, Cursor, or Windsurf?

Both servers follow the standard Model Context Protocol configuration format. Simply copy the JSON block from the configuration section above and paste it into your AI client's mcpServers configuration object (for instance in claude_desktop_config.json or ~/.cursor/mcp.json ), then completely restart or refresh the application.

Are 21st.dev and Magic MCP free to use, or do they require API keys?

21st.dev is listed under a Free / Open Source model with No auth required . Magic MCP operates under a Paid Service model with API Key required . If environment variables are required (such as API keys), be sure to define them under the env key in your MCP client's configuration file.

Can I run both 21st.dev and Magic MCP at the same time in my AI client?

Yes! MCP clients support multi-server orchestration. You can include both 21st-dev and 21st-dev-magic-mcp as distinct keys inside the single mcpServers object in your configuration file. Your AI assistant will automatically select and call the appropriate tool from either server during chat sessions.

Which MCP server has higher directory engagement and quality ratings?

On AllMCPs, 21st.dev has a Quality Score of 30 /100 ( Emerging ) with 0 views, 0 installs, and 0 GitHub stars. Magic MCP holds a Quality Score of 51 /100 ( Good ) with 13 views, 1 installs, and 5,634 GitHub stars.

Side-by-Side Model Context Protocol Comparison

21st.dev vs Magic MCP

In-depth architectural comparison of the 21st.dev and Magic MCP MCP servers. Compare execution transports, security boundaries, tool capabilities, quality scores, and ready-to-paste client installation snippets for Claude, Cursor, Windsurf, and VS Code.

At a Glance & Executive Verdict

21st.dev

Developer Tools · Remote HTTP/SSE

Quality: 30/100 (Emerging) | Auth: No auth required

Magic MCP

Developer Tools · Local stdio

Quality: 51/100 (Good) | Auth: API Key required

Verdict Summary: Choose 21st.dev if you need specialized Developer Tools tools running via a hosted cloud SSE transport. Choose Magic MCP if your workspace requires Developer Tools integration with local subprocess execution. Both servers can be configured concurrently in your client's mcpServers manifest.

Which MCP Server Should You Choose?

Choose 21st.dev when:

You need dedicated capabilities in the Developer Tools domain.
You prefer remote streaming HTTP/SSE transport architecture.
Your security boundary fits: No auth required (Free / Open Source).

Explore 21st.dev Details

Choose Magic MCP when:

You need dedicated capabilities in the Developer Tools domain.
You prefer local stdio subprocess transport architecture.
Your security boundary fits: API Key required (Paid Service).
You have access to required keys: API_KEY, TWENTY_FIRST_API_KEY, API_KEY_21ST.
Primary tools included: Component generation and refinement, Component and theme catalog search, Logo search tool.

Explore Magic MCP Details

Feature & Specification Comparison

Specification	2 21st.dev Developer Tools	Magic MCP 21st-dev Developer Tools
Summary	Search 21st.dev UI components & themes, get their code, and generate new ones with 21st AI.	Create crafted UI components inspired by the best 21st.dev design engineers.
Category & Scope	Developer Tools	Developer Tools
Quality signal

Tools & Capabilities Breakdown

21st.dev Tools (0)

No explicit tool names declared in metadata yet. Check project README on main listing page.

Magic MCP Tools (5)

Component generation and refinement

Component and theme catalog search

Logo search tool

Bookmarks and team library management

Profile and API key management

Ready-to-Paste Client Configurations

Paste either (or both) of these JSON server blocks into your client config file (e.g. claude_desktop_config.json or ~/.cursor/mcp.json).

21st.dev Configuration

mcpServers (Claude Desktop / Cursor)

{
  "mcpServers": {
    "21st-dev": {
      "url": "https://21st.dev/mcp"
    }
  }
}

Magic MCP Configuration

mcpServers (Claude Desktop / Cursor)

{
  "mcpServers": {
    "21st-dev-magic-mcp": {
      "command": "npx",
      "args": [
        "-y",
        "@21st-dev/cli@latest"
      ],
      "env": {
        "API_KEY": "YOUR_API_KEY_HERE",
        "TWENTY_FIRST_API_KEY": "YOUR_TWENTY_FIRST_API_KEY_HERE",
        "API_KEY_21ST": "YOUR_API_KEY_21ST_HERE"
      }
    }
  }
}

Frequently Asked Questions

21st.dev is categorized under Developer Tools and uses a remote streaming HTTP/SSE transport. In contrast, Magic MCP belongs to Developer Tools using local stdio subprocess. Select 21st.dev when you need capabilities focused on developer tools and Magic MCP when you require tools for developer tools.

More alternatives to 21st.dev More alternatives to Magic MCP Developer Tools category hub