21st.dev Magic + Klavis AI: Complete MCP Integration
21st.dev Magic is a MCP server that Create crafted UI components inspired by the best 21st.dev design engineers..
When integrated with Klavis AI, you can:
- Generate crafted UI components using AI design patterns
- Live preview of generated components
- Full TypeScript support for generated components
This guide provides step-by-step instructions to set up 21st.dev Magic in Klavis AI, including configuration, examples, and troubleshooting.
What You'll Achieve
After completing this setup:
- 21st.dev Magic will be fully integrated and operational
- You can use 21st.dev Magic tools directly in Klavis AI
- All 21st.dev Magic capabilities will be available for your workflows
- Access to 4 different tools
Prerequisites
Before starting, ensure you have:
- 21st.dev account
- API key
- 21st.dev Magic API key for authentication
- Klavis AI installed and configured
- Compatible operating system (Cloud (klavis.ai), Self-Hosted (Docker), Python SDK, TypeScript SDK)
Installation
Step 1: Install 21st.dev Magic
Manual installation steps:
- Generate API key from 21st.dev Magic Console
- Add configuration to IDE-specific JSON config
- Restart IDE to load MCP server
Configuration
Step 2: Configure Klavis AI
- Open Klavis AI settings
- Navigate to MCP server configuration
- Add 21st.dev Magic server with appropriate settings
- Save and restart if needed
Examples
Once configured, you can use 21st.dev Magic in Klavis AI:
Create Navigation Bar
Generate a modern responsive navigation component
Ask Klavis AI: "/ui create a modern navigation bar with responsive design"
Expected Result: Responsive navigation component with mobile menu, logo placement, and styling
Generate Dashboard Card
Create a dashboard card with metrics display
Ask Klavis AI: "/ui design a dashboard card showing user analytics with charts"
Expected Result: Card component with chart integration, metrics display, and responsive layout
Build Form Component
Create a contact form with validation
Ask Klavis AI: "/ui create a contact form with validation and modern styling"
Expected Result: Form component with input validation, error states, and submit handling
Design Landing Hero
Generate a landing page hero section
Ask Klavis AI: "/ui build a hero section for a SaaS product with CTA buttons"
Expected Result: Hero component with headline, description, call-to-action buttons, and background
Testing Your Setup
- Launch Klavis AI
- Verify 21st.dev Magic is available in the tools list
- Test basic 21st.dev Magic functionality
Troubleshooting
Common Issues
API Key Invalid
Symptoms: Authentication errors, Access denied messages, Server connection failures
Cause: Invalid or expired API key
Solution:
- Generate new API key from 21st.dev Magic Console
- Update API_KEY in IDE configuration
- Restart IDE to reload configuration
IDE Not Detecting MCP Server
Symptoms: MCP commands not available, Server not listed in IDE
Cause: Incorrect configuration file or location
Solution:
- Verify config file is in correct location for your IDE
- Check JSON syntax in configuration file
- Restart IDE after configuration changes
- Use CLI installation for automatic setup
Component Generation Fails
Symptoms: Empty responses, Error messages during generation
Cause: Network issues or service limitations
Solution:
- Check internet connectivity
- Verify API key has sufficient quota
- Try simpler prompts initially
- Contact support if issues persist
TypeScript Errors in Generated Code
Symptoms: Type errors, Compilation failures
Cause: Missing dependencies or type definitions
Solution:
- Install required TypeScript dependencies
- Update @types packages
- Configure TypeScript strict mode properly
- Import necessary type definitions
API Authentication Failed
Symptoms: 401 Unauthorized errors, Invalid API key message
Cause: Missing or incorrect API key
Solution:
- Verify API key is correctly copied from klavis.ai dashboard
- Check API key is set in environment variable or code
- Ensure API key has not expired
- Regenerate API key if necessary
OAuth Authorization Errors
Symptoms: OAuth redirect failures, Authentication loop, Token refresh errors
Cause: OAuth credentials not configured or expired
Solution:
- Complete OAuth authorization flow for required services
- Check redirect URLs are correctly configured
- Verify OAuth app credentials in service provider settings
- Contact Klavis support for OAuth troubleshooting
Tool Call Failures
Symptoms: Tool not found errors, Execution timeouts, Rate limit errors
Cause: Tool not properly configured or service rate limits exceeded
Solution:
- Verify tool name matches available tools list
- Check service-specific rate limits and quotas
- Ensure required parameters are provided correctly
- Review Klavis API logs for detailed error messages
Context Window Overload
Symptoms: Too many tools error, Context length exceeded, Slow responses
Cause: Too many tools exposed to AI agent at once
Solution:
- Use Strata Progressive Discovery to expose tools hierarchically
- Reduce number of simultaneous MCP servers in Strata configuration
- Filter tools based on current task context
- Enable intelligent tool filtering in Strata settings
Docker Deployment Issues
Symptoms: Container fails to start, Port conflicts, Connection refused
Cause: Docker configuration or port binding errors
Solution:
- Ensure Docker is installed and running
- Check port 5000 is not already in use (or change port mapping)
- Verify Docker image pulled successfully
- Check container logs: docker logs <container-id>
21st.dev Magic not appearing in Klavis AI
Symptoms: Server not listed, Tools not available
Cause: Configuration or installation issue
Solution:
- Verify configuration syntax
- Check 21st.dev Magic installation
- Restart Klavis AI
- Check logs for error messages
Next Steps
Now that 21st.dev Magic is integrated with Klavis AI:
- Explore all 21st.dev Magic capabilities through Klavis AI
- Check out other MCP servers that work with Klavis AI
- Join the MCP community for tips and support
- Consider contributing to 21st.dev Magic development
Need Help?
- Search for 21st.dev Magic documentation
- Check the Klavis AI MCP guide
- Join the MCP community discussions