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MCP Builder Skill by @w95

FREE

github stars★ 286updatedFeb 2026repo@w95

$git clone https://github.com/w95/awesome-claude-corporate-skills

The skill is the 08-it-engineering/mcp-builder folder inside that repository. Copy it into the folder your agent loads skills from; check your agent's documentation for where that is.

about MCP Builder Skill by @w95

Guide for creating high-quality MCP (Model Context Protocol) servers that enable LLMs to interact with external services through well-designed tools.

our take

A workflow for creating Model Context Protocol servers that let language models use external services through well-designed tools. It runs in phases: research and planning, implementation, then review and testing.

when to use it

You want to expose an API or data source to an agent as MCP tools
You need guidance on designing tools an agent can use reliably
You want a review and test phase built into the process

before you install

A server you build can reach whatever its credentials allow, so scope them tightly
Test with realistic prompts, since tool names and descriptions drive how agents use them

what's inside

The original SKILL.md is organised into these sections:

Overview
🚀 High-Level Workflow
Phase 1: Deep Research and Planning
Phase 2: Implementation
Phase 3: Review and Test
Phase 4: Create Evaluations
📚 Documentation Library
Core MCP Documentation (Load First)
SDK Documentation (Load During Phase 1/2)
Language-Specific Implementation Guides (Load During Phase 2)
Evaluation Guide (Load During Phase 4)

source and license

Written and maintained by @w95. It is published under the MIT license, which allows reuse with attribution. SkillDirectory does not claim authorship: this page adds our own review and links back to the original, and the skill's text belongs to its author.

View the full SKILL.md on GitHub ↗

Read the opening of the original SKILL.md

# MCP Server Development Guide

## Overview

Create MCP (Model Context Protocol) servers that enable LLMs to interact with external services through well-designed tools. The quality of an MCP server is measured by how well it enables LLMs to accomplish real-world tasks.

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# Process

## 🚀 High-Level Workflow

Creating a high-quality MCP server involves four main phases:

### Phase 1: Deep Research and Planning

#### 1.1 Understand Modern MCP Design

**API Coverage vs. Workflow Tools:**
Balance comprehensive API endpoint coverage with specialized workflow tools. Workflow tools can be more convenient for specific tasks, while comprehensive coverage gives agents flexibility to compose operations. Performance varies by client—some clients benefit from code execution that combines basic tools, while others work better with higher-level workflows. When uncertain, prioritize comprehensive API coverage.

**Tool Naming and Discoverability:**
…

Excerpt only, quoted from the author's repository. Open the repository for the complete file.

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