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mcp-builder

Create MCP servers with Python FastMCP and TypeScript MCP SDK.

1|Updated Oct 1, 2025
Search Tags:#typescript#python#validation#sdk#mcp#server#tool-registration
One-click install
npx skills add https://github.com/GodSpeedAI/SEA --skill mcp-builder-godspeedai
Or copy as Structured Prompt for Agent▼
Please help me install this Agent Skill.
Skill: mcp-builder
Source: https://github.com/GodSpeedAI/SEA/tree/main/.claude/skills/mcp-builder
Command: npx skills add https://github.com/GodSpeedAI/SEA --skill mcp-builder-godspeedai

SYSTEM DOCUMENTATION & REQUIREMENTS

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

What problem does it solve?

This Skill helps developers accelerate building MCP servers by providing proven patterns, tooling, and best practices for registering tools, validating inputs, and configuring transports across Python and TypeScript SDKs.

Core Features & Use Cases

  • Tool registration with strict input validation using Zod (TypeScript) or Pydantic (Python)
  • Consistent tool annotations and structured outputs to optimize agent interactions
  • End-to-end MCP server scaffolding that supports stdio and streamable HTTP transports

Quick Start

Install dependencies, scaffold a simple MCP server, register a sample tool, and run locally using stdio transport. Then validate tool responses and iterate on error handling and pagination.

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 with tool registration and input validation?▼

To build an MCP server, you can use this skill to scaffold the server and register tools with strict input validation using Zod for TypeScript or Pydantic for Python. It provides proven patterns for structuring tool inputs and outputs.

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

Yes, the MCP SDK supports both stdio and streamable HTTP transports. This skill provides end-to-end scaffolding patterns to configure these transports, ensuring your server communicates effectively with autonomous agents across different environments.

What is the best way to structure MCP tool annotations for autonomous agents?▼

The best way to structure MCP tool annotations is by applying consistent annotations and structured outputs. This skill promotes best practices for optimizing agent interactions, ensuring tools provide clear, predictable responses.

Can I use Python FastMCP to expose tools for autonomous agents?▼

Yes, you can use Python FastMCP to expose tools for autonomous agents. This skill covers Python FastMCP and TypeScript MCP SDK implementations, including tool registration, error handling, and pagination best practices.

Why do I need Pydantic or Zod when registering MCP server tools?▼

You need Pydantic or Zod when registering MCP server tools to enforce strict input validation. This skill utilizes Pydantic for Python and Zod for TypeScript to ensure tools receive correctly formatted data, preventing runtime errors.

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