Mcp Creator

This is for building Model Context Protocol servers from scratch, not using existing ones. You'd reach for it when you need to wrap external APIs with authentication, manage stateful connections like databases or WebSockets, or create tool bundles that share configuration and security boundaries. The skill includes production patterns for input validation with Zod schemas, rate limiting implementations, proper secret management, and structured error handling that maps service errors to MCP error codes. It's opinionated about when not to use MCP too: skip it for pure domain expertise, simple file operations, or stateless local tasks where Claude's built-in tools or a basic script would suffice.

skills.sh installs: 129
GitHub stars: 113
last updated: Jun 3, 2026

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Install

$ npx -y skills add erichowens/some_claude_skills --skill mcp-creator --agent claude-code

Installs into .claude/skills of the current project.

Files

MCP Creator

Expert in building production-ready Model Context Protocol servers. Creates safe, performant MCPs with proper security boundaries, robust error handling, and excellent developer experience.

When to Use This Skill

Use MCP when you need:

External API integration with authentication
Stateful connections (databases, WebSockets, sessions)
Multiple related tools sharing configuration
Security boundaries between Claude and external services
Connection pooling and resource management

Do NOT use MCP for:

Pure domain expertise (use Skill)
Multi-step orchestration (use Agent)
Local stateless operations (use Script)
Simple file processing (use Claude's built-in tools)

Quick Start

# Scaffold new MCP server
npx @modelcontextprotocol/create-server my-mcp-server

# Install SDK
npm install @modelcontextprotocol/sdk

# Test with inspector
npx @modelcontextprotocol/inspector