Claude Skill
Build MCP servers with MCPfy using Claude. The MCPfy Server Builder skill gives Claude the MCPfy-specific knowledge it needs to create, extend, debug, and verify MCP servers built withmcpfy-sdk.
Overview
The skill helps Claude work with MCPfy’s APIs, project structure, and development conventions so you can describe what you want to build without having to provide the MCPfy implementation details yourself. It provides guidance for:- MCP servers
- Tools
- Resources
- Prompts
- Widgets
- Authentication
- MCP clients
- Debugging and troubleshooting
- Server verification
What the Skill Does
Build MCPfy servers
Ask Claude to create a new MCPfy server based on what you want to build. For example:Add tools
The skill helps Claude create and modify MCPfy tools using the SDK’s conventions for schemas, handlers, and responses. For example:Build widgets
The skill includes guidance for MCPfy widgets and their expected project structure. For example:Work with resources and prompts
The skill also provides guidance for adding MCP resources and prompts to an existing MCPfy server. For example:Configure authentication
The skill includes MCPfy-specific guidance for authentication and helps Claude distinguish between the authentication patterns supported by the SDK. For example:Build MCPfy clients
The skill also covers the MCPfy client API, allowing Claude to help create clients that connect to MCP servers. For example:MCPfy-Specific Guidance
The skill is designed to keep Claude aligned with MCPfy’s SDK rather than generating generic MCP implementations. For example, MCPfy tools use the SDK’sschema convention:
Verification
The skill encourages verifying generated implementations rather than assuming that code is correct after generation. A typical workflow is:- The server starts successfully.
- The tool appears in MCP Inspector.
- The tool accepts the expected inputs.
- The tool returns the expected result.
Troubleshooting
The skill includes troubleshooting guidance for common MCPfy development issues. This includes problems involving:- TypeScript and build errors
- Incorrect MCPfy API usage
- Tool schemas
- Tool responses
- Widget structure and configuration
- Authentication configuration
- Server startup
- MCP connection issues
What’s Included
The MCPfy Server Builder skill contains:SKILL.mdwith the core MCPfy development instructions- MCPfy server development references
- Tool development guidance
- Widget development guidance
- Authentication guidance
- Client guidance
- Troubleshooting references
- A starter project template

