mcp-builder

Build MCP servers in Python or TypeScript with validation and transport wiring.

10|2|Updated Jan 22, 2026

Search Tags:#security #validation #sdk #mcp #model-context-protocol #tool-registration #mcp-server

Ready to run

npx skills add https://github.com/Yrzhe/telegram-claude-bot --skill mcp-builder-yrzhe

💬 Prompt for ChatGPT / Claude Chat▼

Please help me install this Agent Skill.
Skill: mcp-builder
Source: https://github.com/Yrzhe/telegram-claude-bot/tree/main/.claude/skills/mcp-builder
Command: npx skills add https://github.com/Yrzhe/telegram-claude-bot --skill mcp-builder-yrzhe

SYSTEM DOCUMENTATION & REQUIREMENTS

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

What problem does it solve?

MCP development can be error-prone due to the complexity of safely exposing external services to LLMs, requiring rigorous validation, error handling, and transport orchestration.

Core Features & Use Cases

Tool registration with typed input validation and rich annotations
Support for multiple transports (stdio and streamable HTTP)
Structured outputs and pagination patterns for scalable responses
Real-world use: scaffold and enforce best practices for MCP servers that integrate external APIs

Quick Start

Install dependencies and start the MCP server scaffold to begin building an MCP server.

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 that safely exposes external APIs to LLMs?▼

To build a robust MCP server, you need rigorous input validation, structured error handling, and proper transport wiring. This Skill scaffolds servers in Python or Node/TypeScript, enforcing best practices for safely integrating external services with LLMs.

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

Yes, the MCP server builder supports both local stdio and remote streamable HTTP transports. It provides the necessary transport wiring to deploy your server across different communication environments.

How do I add typed input validation and annotations when registering MCP tools?▼

Tool registration includes typed input validation and rich annotations directly within the MCP server scaffold. This ensures that parameters passed to your tools are strictly validated before execution.

Can I use FastMCP to implement an MCP server with structured outputs and pagination?▼

Yes, FastMCP is fully supported for Python implementations. The builder enables structured outputs and pagination patterns, allowing your MCP server to handle scalable responses from external APIs.

What is the best way to handle errors when exposing external services through an MCP server?▼

Handling errors effectively requires structured error handling integrated into your tool registration logic. This Skill applies best practices for tooling design to manage exceptions and safely expose external services to LLMs.

Why does my MCP server return unvalidated inputs when integrating external APIs?▼

Unvalidated inputs occur when tool registration lacks typed validation. This Skill solves this by enforcing rigorous input validation and rich annotations during the MCP server scaffolding process.