mcp-builder

Design end-to-end MCP servers exposing external APIs to LLMs.

Updated Apr 2, 2026
One-click install
npx skills add https://github.com/lucasgaldinos/my-skills --skill mcp-builder-lucasgaldinos
Or copy as Structured Prompt for Agent▼
Please help me install this Agent Skill.
Skill: mcp-builder
Source: https://github.com/lucasgaldinos/my-skills/tree/main/skills/mcp-builder
Command: npx skills add https://github.com/lucasgaldinos/my-skills --skill mcp-builder-lucasgaldinos

SYSTEM DOCUMENTATION & REQUIREMENTS

What problem does it solve?

MCP builder helps developers design and implement MCP servers that enable LLMs to securely and efficiently interact with external services.

Core Features & Use Cases

  • Lifecycle-driven development: research, implement, test, and evaluate MCP servers.
  • Language-agnostic guidance: best practices for TypeScript and Python MCP servers.
  • Tool and transport guidance: how to design tools, schemas, and transports with robust error handling.
  • Evaluation readiness: references and templates for end-to-end evaluations.

Quick Start

Register a simple MCP tool using the TypeScript or Python SDK and run the server locally via stdio to validate a basic workflow.

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 expose external APIs to LLMs?▼

To build an MCP server, you design end-to-end tool schemas and transports that expose external APIs to LLMs. This involves research, implementation, testing, and evaluation using structured tool definitions and robust input validation.

Can I use Python and TypeScript SDKs for MCP tool development?▼

Yes, MCP tool development supports both Python and TypeScript SDKs. The guide provides language-agnostic best practices for implementing servers, designing tools, and handling errors across both environments.

What is the best way to structure MCP tool schemas and error handling?▼

The best way to structure MCP tool schemas is by enforcing structured tool definitions with robust input validation. Production-ready patterns should be applied across transports and tool schemas to ensure robust error handling.

How do I test and evaluate MCP servers locally?▼

You test and evaluate MCP servers by running them locally via stdio to validate basic workflows. The lifecycle-driven development approach includes references and templates for end-to-end evaluations.

Do I need specific dependencies to run an MCP server via stdio?▼

No specific external dependencies are required to run an MCP server. You can register a simple MCP tool using the TypeScript or Python SDK and run the server locally via stdio to validate workflows.