mcp-builder

Build MCP servers with the Python or TypeScript SDK.

3|Updated Dec 28, 2025

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

Ready to run

npx skills add https://github.com/hongbietcode/synthetic-claude --skill mcp-builder-hongbietcode

💬 Prompt for ChatGPT / Claude Chat▼

Please help me install this Agent Skill.
Skill: mcp-builder
Source: https://github.com/hongbietcode/synthetic-claude/tree/main/plugins/dev-tools/skills/mcp-builder
Command: npx skills add https://github.com/hongbietcode/synthetic-claude --skill mcp-builder-hongbietcode

SYSTEM DOCUMENTATION & REQUIREMENTS

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

What problem does it solve?

This Skill provides a structured, best-practices framework for building MCP servers using the MCP Python SDK (FastMCP) or MCP TypeScript SDK, guiding teams through design, implementation, testing, and evaluation to deliver robust, reusable tools and resources.

Core Features & Use Cases

Guided server scaffolding: Outlines project structure, naming conventions, and lifecycle from setup to deployment for both Python and TypeScript MCP servers.
Tool registration patterns: Demonstrates typed input validation, annotations, and safe tool implementation to ensure predictable, chainable workflows.
Quality & security guidance: Covers error handling, pagination, structured outputs, and security considerations to reduce risk in real-world integrations.

Quick Start

Install dependencies and run the sample MCP server
Register a sample tool with proper schemas
Start the server using stdio or streamable HTTP transport

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 using the Python or TypeScript SDK?▼

To build an MCP server, you scaffold the project structure, register tools with typed input validation and annotations, and start the server using stdio or streamable HTTP transport. The framework guides you through setup, implementation, and testing for both Python and TypeScript.

What is the best way to register tools in an MCP server?▼

The best way to register tools in an MCP server is to enforce deterministic tool interfaces, explicit annotations, and structured outputs. This approach ensures predictable, chainable workflows and safe tool implementation across both Python and TypeScript SDKs.

Can I use FastMCP to deploy scalable MCP servers?▼

Yes, you can use FastMCP to deploy scalable MCP servers. The framework provides language-agnostic guidance for scalable deployments, covering project structure, lifecycle management from setup to deployment, and robust error handling to reduce risk in real-world integrations.

How do I handle input validation and errors in MCP server design?▼

To handle input validation and errors in MCP server design, you apply typed input validation schemas and implement robust error handling with pagination. This structured approach to outputs ensures predictable workflows and reduces security risks.

What security considerations should I follow when creating MCP tools?▼

When creating MCP tools, you should follow security considerations that prevent common pitfalls by enforcing deterministic tool interfaces and safe tool implementation. This reduces risk in real-world integrations and ensures robust, reusable resources.

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

Yes, the MCP server framework supports both stdio and streamable HTTP transports. You can start the sample server using either protocol after installing dependencies and registering a sample tool with proper schemas.