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mcp-builder

Develop MCP servers in Python or TypeScript for LLM integration.

Updated Nov 9, 2025
Search Tags:#typescript#python#mcp#model context protocol#llm integration#tool development#api server
One-click install
npx skills add https://github.com/xu-mengnan/bilibili --skill mcp-builder-xu-mengnan
Or copy as Structured Prompt for Agent▼
Please help me install this Agent Skill.
Skill: mcp-builder
Source: https://github.com/xu-mengnan/bilibili/tree/main/.claude/skills/mcp-builder
Command: npx skills add https://github.com/xu-mengnan/bilibili --skill mcp-builder-xu-mengnan

SYSTEM DOCUMENTATION & REQUIREMENTS

💡 This Skill includes references (resource) components.

What problem does it solve?

This Skill eliminates the inconsistent quality and missing best practices of manually built MCP servers by providing a structured, step-by-step workflow for creating servers that reliably enable LLMs to interact with external services and APIs.

Core Features & Use Cases

  • End-to-End Development Guidance: Walks you through every phase of MCP server creation, from initial API research and planning to implementation, testing, and evaluation.
  • Multi-Language Support: Includes dedicated implementation guides for both TypeScript (MCP SDK) and Python (FastMCP), with code patterns, schema examples, and quality checklists for each stack.
  • Best Practice Integration: Embeds MCP protocol best practices for tool naming, error handling, pagination, and transport selection to ensure servers are performant and intuitive for LLMs to use.
  • Use Case: For example, if you need to build an MCP server to let an LLM access your team's internal project management API, this Skill walks you through designing the tools, implementing the server, testing it with the MCP Inspector, and creating evaluations to verify it works for common user queries.

Quick Start

Use the mcp-builder skill to create a new MCP server that integrates your custom internal API for LLM access.

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 to connect an LLM to an external API?▼

To build an MCP server, you need a structured workflow covering API research, tool schema design, implementation, and testing. This skill provides step-by-step guidance for creating compliant servers that reliably enable LLMs to interact with external services.

Can I develop MCP servers using both Python and TypeScript?▼

Yes, you can develop MCP servers using both Python and TypeScript. The skill includes dedicated implementation guides for Python using FastMCP and TypeScript using the MCP SDK, providing code patterns, schema examples, and quality checklists for each stack.

What is the best way to design tool schemas for reliable LLM integration?▼

The best way to design tool schemas for LLM integration is to follow MCP protocol best practices for tool naming, error handling, pagination, and transport selection. This ensures servers are performant and intuitive for LLMs to use.

How do I test and evaluate an MCP server after implementation?▼

You test and evaluate an MCP server using the MCP Inspector and creating specific evaluations. This skill walks you through testing the server implementation and verifying it works for common user queries against your external APIs.

What are the common limitations when manually building a Model Context Protocol server?▼

Manually building a Model Context Protocol server often results in inconsistent quality and missing best practices. Without a structured workflow, servers may lack proper error handling, transport configuration, and tool schema design needed for reliable LLM interaction.

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