What problem does it solve?
It helps you implement Model Context Protocol (MCP) servers safely by providing clear, repeatable rules that reduce security mistakes while enabling tools, resources, and prompt templates.
Core Features & Use Cases
- Secure tool execution: Prevents command injection by enforcing allowlists and validates tool inputs with strict schemas.
- Controlled resource access: Avoids path traversal and restricts resource URIs to the intended scope and permissions.
- Prompt and output hardening: Defends against prompt injection and prevents secrets from leaking through tool responses or errors.
- Use case: Create an MCP server that reads approved workspace files, exposes a search tool, and provides structured prompt templates for code review and explanation.
Quick Start
Use the mcp skill to generate an MCP server implementation that validates every tool argument, restricts file paths to the workspace, and returns MCP-safe error codes without leaking sensitive details.