Mcp Builder

This is your blueprint for building Model Context Protocol servers that let LLMs talk to external APIs. It walks you through four phases: research (including when to favor comprehensive API coverage over workflow shortcuts), implementation in TypeScript or Python, testing with MCP Inspector, and creating evaluations with 10 complex questions to verify your server actually works. The guide pushes TypeScript with streamable HTTP for remote servers, emphasizes actionable error messages, and includes specifics like using Zod for schemas and structuredContent for responses. If you're wiring up a service to work with Claude or other LLMs through MCP, this gives you the opinionated process and technical details to do it right the first time.

skills.sh installs: 186
GitHub stars: 824
last updated: Aug 21, 2026

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Install

$ npx -y skills add warpdotdev/oz-skills --skill mcp-builder --agent claude-code

Installs into .claude/skills of the current project.

Files

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.

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: Clear, descriptive tool names help agents find the right tools quickly. Use consistent prefixes (e.g., github_create_issue, github_list_repos) and action-oriented naming.

SKILL.md on GitHub