mcp-builder

Design MCP servers exposing external APIs to LLMs via tools.

Updated May 25, 2026

Search Tags:#typescript #python #validation #sdk #mcp #server #tool-registration

Ready to run

npx skills add https://github.com/Chieji/my-skills --skill mcp-builder-chieji

💬 Prompt for ChatGPT / Claude Chat▼

Please help me install this Agent Skill.
Skill: mcp-builder
Source: https://github.com/Chieji/my-skills/tree/main/mcp-builder
Command: npx skills add https://github.com/Chieji/my-skills --skill mcp-builder-chieji

SYSTEM DOCUMENTATION & REQUIREMENTS

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

What problem does it solve?

Developers need a structured, scalable approach to exposing external APIs to LLMs via MCP servers, avoiding ad-hoc adapters and inconsistent tool design.

Core Features & Use Cases

Guidance on architecture for MCP servers in Python (FastMCP) and TypeScript (MCP SDK)
Tool registration, input/output schemas, and pagination patterns
Best practices for transports (stdio vs streamable HTTP), error handling, and testing

Quick Start

Create a new MCP server project and register sample tools using the MCP SDK to begin integrating external APIs.

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 tool registrations with input/output schemas and pagination patterns using Python (FastMCP) or TypeScript (MCP SDK). This Skill provides architectural guidance to expose external APIs to LLMs via tools robustly.

What is the best way to handle transport choices for MCP servers?▼

The best way to handle transport choices for MCP servers is evaluating stdio versus streamable HTTP based on your integration scale. This Skill outlines best practices for transports, error handling, and testing scenarios to ensure safe API delivery.

How do I implement validation and tool annotations in an MCP server?▼

You implement validation and tool annotations in an MCP server by defining strict input/output schemas during tool registration. This Skill emphasizes validation, tool annotations, and security considerations to ensure safe, scalable integrations with LLMs.

Can I use TypeScript and Python to create MCP servers?▼

Yes, you can use TypeScript and Python to create MCP servers. This Skill targets both Python (FastMCP) and TypeScript (MCP SDK) stacks, covering architecture, tool design, pagination patterns, and testing scenarios for exposing external APIs.

How do I register sample tools using the MCP SDK?▼

To register sample tools using the MCP SDK, create a new MCP server project and define tool registrations with appropriate schemas. This Skill provides a quick start approach to begin integrating external APIs into LLMs safely.