mcp-builder

Design and deploy MCP servers in Python and TypeScript with validated tools.

46|14|Updated Jan 11, 2026

Search Tags:#typescript #integration #python #sdk #mcp #server #tools

Ready to run

npx skills add https://github.com/alexdcd/Mafia-Claude-Skills --skill mcp-builder-alexdcd

💬 Prompt for ChatGPT / Claude Chat▼

Please help me install this Agent Skill.
Skill: mcp-builder
Source: https://github.com/alexdcd/Mafia-Claude-Skills/tree/main/skills/mcp-builder
Command: npx skills add https://github.com/alexdcd/Mafia-Claude-Skills --skill mcp-builder-alexdcd

SYSTEM DOCUMENTATION & REQUIREMENTS

💡 This Skill requires anthropic, mcp, and includes scripts (resource) components.

What problem does it solve?

MCP servers enable Claude/LLMs to interact with external services through well-designed tools and resources, turning ad-hoc automation tasks into repeatable, auditable workflows.

Core Features & Use Cases

Provides end-to-end scaffolding for building MCP servers in Python (FastMCP) and Node/TypeScript (MCP SDK).
Enforces strong input validation with Pydantic (Python) and Zod (TypeScript), explicit tool schemas, and typed outputs.
Supports multiple transports (stdio and streamable HTTP) and resource exposure for data access.
Embeds best-practice patterns for tool design, error handling, pagination, and security.
Use cases include integrating external APIs, automating data workflows, and powering autonomous agents.

Quick Start

Install dependencies and run the sample MCP server to see end-to-end MCP workflows with an external API.

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 external APIs?▼

An MCP server acts as a bridge that lets LLMs interact with external services through well-designed tools and resources, turning ad-hoc automation tasks into repeatable, auditable workflows. It enforces strict input validation and production-grade patterns for reliability.

Can I use TypeScript and the MCP SDK to create custom tools for Claude?▼

Yes, you can use TypeScript with the MCP SDK to create custom tools for Claude. The approach enforces strong input validation with Zod, explicit tool schemas, and typed outputs to ensure robust tool definitions and safe interactions with external services.

Does the MCP server support both stdio and streamable HTTP transports?▼

Yes, building MCP servers with this approach supports multiple transports including stdio and streamable HTTP. This allows you to expose resources for data access and integrate external APIs using the transport method that best fits your deployment context.

What is the best way to validate inputs when building MCP tools in Python?▼

The best way to validate inputs when building MCP tools in Python is using Pydantic. This enforces strong input validation, explicit tool schemas, and typed outputs, embedding best-practice patterns for tool design, error handling, pagination, and security.

Why do I need strict input validation and tool annotations for LLM workflows?▼

Strict input validation and clear tool annotations are needed to turn ad-hoc automation tasks into repeatable, auditable workflows. Enforcing typed outputs and explicit schemas with Zod or Pydantic ensures production-grade reliability and safety when LLMs interact with external services.