Which programming languages are supported by this skill?

The skill provides detailed implementation guides for both Python (using FastMCP) and Node/TypeScript (using the official MCP SDK).

How does this skill help with testing tools?

It includes a dedicated phase for creating evaluation harnesses, which use complex, multi-step questions to verify that the LLM can successfully navigate the tools you've built.

What does 'agent-centric design' mean in this context?

It refers to designing tools specifically for AI usage, focusing on concise data returns, actionable error messages, and task-oriented workflows instead of raw API endpoints.

Can I use this to build tools for production environments?

Yes, the skill covers production-grade concerns including input validation (Pydantic/Zod), authentication, rate limiting, and character truncation strategies.

What is an MCP server?

An MCP (Model Context Protocol) server is a standardized interface that allows Large Language Models like Claude to securely interact with external data, APIs, and local services.

MCP Server Builder

Name: MCP Server Builder
Author: rafaelcalleja

byrafaelcalleja

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API開発

Guides the creation of high-quality Model Context Protocol (MCP) servers for seamless LLM integration with external services.

The MCP Server Builder skill provides a comprehensive development framework for building robust Model Context Protocol (MCP) servers in both Python and TypeScript. It prioritizes agent-centric design, teaching developers how to build high-impact workflow tools rather than simple API wrappers. By focusing on context window optimization, actionable error handling, and evaluation-driven development, this skill ensures that the resulting tools are highly effective for Claude and other LLMs when interacting with external APIs, databases, and services.

主な機能

01Standardized protocols for error handling, pagination, and response formatting (JSON/Markdown)

02Agent-centric design patterns to optimize tool usage for limited LLM context windows

03Step-by-step implementation guides for Python (FastMCP) and Node/TypeScript SDKs

041 GitHub stars

05Automated retrieval of the latest MCP protocol and SDK documentation

06Comprehensive evaluation framework for testing tool stability and performance

ユースケース

01Creating production-ready external service integrations with robust validation and error handling

02Building custom MCP servers to connect internal business APIs to Claude

03Refactoring existing API integrations into optimized tools for AI agents

What are Skills?·How to Install

Install with 🐟 Skill.Fish

npx skillfish add rafaelcalleja/claude-market-place mcp-builder

For use in Claude.ai and ChatGPT

Download Skill