Prompt Mastery

Craft Claude-specific XML-structured prompts for system messages and agent instructions.

476|42|Updated Oct 18, 2025

Search Tags:#Claude #structure #XML #prompt-engineering #prompt #system-prompt #CoT

One-click install

npx skills add https://github.com/taylorsatula/mira-OSS --skill prompt-mastery

Or copy as Structured Prompt for Agent▼

Please help me install this Agent Skill.
Skill: Prompt Mastery
Source: https://github.com/taylorsatula/mira-OSS/tree/main/.claude/skills/prompt-mastery
Command: npx skills add https://github.com/taylorsatula/mira-OSS --skill prompt-mastery

SYSTEM DOCUMENTATION & REQUIREMENTS

What problem does it solve?

This skill provides advanced, Claude-specific prompt engineering techniques to craft clear, structured prompts for system messages, tool descriptions, and agent instructions.

Core Features & Use Cases

XML-structured prompts: leverage Claude's native XML structure for precise control.
Context & motivation: supply background to improve model alignment and results.
Prefill & thinking-cap: techniques to guide model reasoning and force desired formats.
Role-based prompting & meta-prompting: steer tone, behavior, and iterative refinement.

Quick Start

Before writing significant prompts, invoke this skill to design an optimized prompt using XML structure and explicit output requirements.