system-prompt-writer

What problem does it solve?

Writing effective system prompts for AI agents is challenging, often leading to vague, over-specified, or error-prone agent behavior. This skill provides expert guidance to create clear, concise, and high-performing prompts, ensuring agents consistently achieve desired outcomes.

Core Features & Use Cases

• Context Engineering Principles: Guides users on Anthropic's "minimum effective information" and "right altitude" principles for prompt design.
• Structured Prompt Templates: Offers hybrid Markdown + XML templates for organizing prompts, improving readability and machine parseability.
• Critical Escaping Rules: Emphasizes and explains the mandatory double-brace {{}} escaping for code samples within prompts, preventing common KeyError failures.
• Use Case: A developer needs to improve an agent's ability to use tools. This skill provides specific guidance on how to write unambiguous tool guidance sections, including decision trees and constraints, directly within the system prompt.

Quick Start

I need to write a system prompt for a new data analysis agent. Guide me through the best practices for structuring the prompt and writing effective tool guidance.