mcp-builder

Build MCP servers with Python FastMCP and Node TypeScript SDKs.

1|Updated Dec 22, 2025
One-click install
npx skills add https://github.com/HanLi0705/lead_agent --skill mcp-builder-hanli0705
Or copy as Structured Prompt for Agent
Please help me install this Agent Skill.
Skill: mcp-builder
Source: https://github.com/HanLi0705/lead_agent/tree/main/Mini-Agent-main/mini_agent/skills/mcp-builder
Command: npx skills add https://github.com/HanLi0705/lead_agent --skill mcp-builder-hanli0705

SYSTEM DOCUMENTATION & REQUIREMENTS

What problem does it solve?

This Skill guides developers through building high-quality MCP servers that enable LLMs to interact with external services via well-designed tools. It covers both Python (FastMCP) and Node/TypeScript (MCP SDK) implementations and provides end-to-end patterns for tool registration, error handling, and security.

Core Features & Use Cases

  • Tool design and registration best practices to ensure clarity, safety, and scalability.
  • SDK integration guidance for Python and TypeScript with strict input validation and typed interfaces.
  • Production-ready MCP server patterns supporting read-only, idempotent, and open-world tool interactions.
  • Use Case: Scaffold a minimal MCP server and expose a sample read-only tool to demonstrate the end-to-end workflow.

Quick Start

Use the mcp-builder to scaffold a minimal MCP server and register a sample read-only tool using the provided templates.

Frequently Asked Questions about mcp-builder

High-intent search queries and answers about installing and using this skill.

FAQPage Schema
How do I build an MCP server with Python and TypeScript SDKs?

To build an MCP server, this skill provides end-to-end patterns for both Python (FastMCP) and Node/TypeScript SDKs, covering tool registration, typed interfaces, and strict input validation to ensure clarity and scalability.

What are the best practices for MCP tool registration and error handling?

Best practices for MCP tool registration include implementing strict input validation, typed interfaces, and robust error handling. This skill provides production-ready patterns supporting read-only, idempotent, and open-world tool interactions for safety.

Can I scaffold a minimal MCP server and expose a sample read-only tool?

Yes, you can scaffold a minimal MCP server and register a sample read-only tool using the provided templates. This demonstrates the end-to-end workflow for enabling LLMs to interact with external services.

Does this MCP server builder support security patterns for external service interactions?

Yes, this MCP server builder supports security patterns for external service interactions. It provides production-ready patterns that ensure safe tool design through strict input validation and controlled read-only or idempotent operations.

When do I need specific patterns for idempotent and open-world MCP tool interactions?

You need specific patterns for idempotent and open-world MCP tool interactions when building production-ready servers. This skill provides the necessary design patterns to ensure your tools handle external service interactions safely and predictably.