mcp-builder

Build testable MCP servers in Python or TypeScript with evaluation workflows.

Updated Aug 23, 2026
One-click install
npx skills add https://github.com/sargupta/sahayakai --skill mcp-builder-sargupta
Or copy as Structured Prompt for Agent
Please help me install this Agent Skill.
Skill: mcp-builder
Source: https://github.com/sargupta/sahayakai/tree/main/sahayakai-main/.agent/skills/mcp-builder
Command: npx skills add https://github.com/sargupta/sahayakai --skill mcp-builder-sargupta

SYSTEM DOCUMENTATION & REQUIREMENTS

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

What problem does it solve?

Building MCP servers that let LLMs interact with external services requires a structured blueprint, best practices, and tested patterns. This Skill provides a comprehensive guide to design, implement, test, and evaluate MCP servers using Python (FastMCP) or Node/TypeScript (MCP SDK), along with reference materials and example tooling.

Core Features & Use Cases

  • Language-agnostic guidance: Learn MCP server architecture and tooling patterns for both Python and TypeScript.
  • Best practices and references: Access MCP protocol guidelines, SDK usage, naming conventions, and security considerations.
  • Evaluation-ready workflow: Includes a read-only evaluation harness and templates to validate MCP server capabilities.

Quick Start

Begin by reviewing the MCP best practices and reference guides, scaffold a new MCP server following the recommended SDK patterns, implement a couple of sample tools, and run the built-in evaluation harness to confirm functionality.

Frequently Asked Questions about mcp-builder

High-intent search queries and answers about installing and using this skill.

FAQPage Schema
How do I build a robust MCP server in Python or TypeScript?

To build a robust MCP server, you need a structured blueprint with best practices for tool registration and transport configuration. This skill provides reference guides and code samples for both Python (FastMCP) and Node/TypeScript SDKs to ensure safe, scalable patterns.

What are the best practices for MCP tool registration and configuration?

MCP tool registration best practices involve using safe, scalable patterns for defining tools and configuring transports. This skill consolidates protocol guidelines, naming conventions, and security considerations to help you structure tool registration effectively.

Can I evaluate MCP server capabilities with a read-only testing harness?

Yes, you can evaluate MCP server capabilities using a read-only evaluation harness. This skill includes a ready-to-run harness and templates designed to validate your server's functionality without executing state-changing operations.

Does this MCP server development guide support both Python and TypeScript SDKs?

This MCP server development guide supports both Python (FastMCP) and Node/TypeScript SDKs. It provides language-agnostic guidance for architecture and tooling patterns, ensuring developers can implement servers in either ecosystem.

Why do I need a structured blueprint for developing MCP servers?

You need a structured blueprint for developing MCP servers to let LLMs interact with external services reliably. Without tested patterns and best practices, managing tool registration, transport configuration, and security becomes prone to errors.

What limitations exist when using the MCP evaluation harness for server testing?

The primary limitation of the MCP evaluation harness is that it is restricted to read-only evaluation tasks. It is designed to confirm server functionality safely without executing state-changing operations or modifying external services.