mcp-builder

Guide building MCP servers for LLM integration with external services.

155|25|Updated Apr 27, 2025
One-click install
npx skills add https://github.com/sammcj/agentic-coding --skill mcp-builder
Or copy as Structured Prompt for Agent
Please help me install this Agent Skill.
Skill: mcp-builder
Source: https://github.com/sammcj/agentic-coding/tree/main/Claude/skills/mcp-builder
Command: npx skills add https://github.com/sammcj/agentic-coding --skill mcp-builder

SYSTEM DOCUMENTATION & REQUIREMENTS

💡 This Skill requires anthropic, mcp, pydantic, httpx, zod, axios, and includes scripts (resource) and references (resource) components.

What problem does it solve?

This Skill provides a comprehensive guide for building high-quality MCP (Model Context Protocol) servers, solving the challenge of effectively integrating LLMs with external services. It ensures that the tools exposed to LLMs are well-designed, reliable, and enable complex real-world tasks.

Core Features & Use Cases

  • Agent-Centric Design Principles: Guides the creation of tools optimized for LLM interaction, focusing on workflows, limited context, and actionable error messages.
  • Comprehensive Implementation Plan: Covers tool selection, input/output design, error handling strategies, and language-specific best practices for Python (FastMCP) and Node/TypeScript (MCP SDK).
  • Evaluation Creation: Provides guidelines for developing robust evaluations to test an MCP server's effectiveness in answering complex, realistic questions.
  • Use Case: When you need to expose an external API or service to an LLM, use this Skill to guide you through building a robust MCP server that enables the LLM to interact with that service effectively and reliably, from initial planning to comprehensive evaluation.

Quick Start

To start building an MCP server, ask: "I want to build an MCP server in Python to integrate with my company's internal CRM API. Guide me through the initial planning and setup."