prompt-engineering

Design robust, reusable prompts with roles, rules, and XML-based contracts for LLMs.

Updated Apr 2, 2026
One-click install
npx skills add https://github.com/CutTheChexx/open-rx --skill prompt-engineering-cutthechexx
Or copy as Structured Prompt for Agent
Please help me install this Agent Skill.
Skill: prompt-engineering
Source: https://github.com/CutTheChexx/open-rx/tree/main/skills/prompt-engineering
Command: npx skills add https://github.com/CutTheChexx/open-rx --skill prompt-engineering-cutthechexx

SYSTEM DOCUMENTATION & REQUIREMENTS

What problem does it solve?

Prompts often fail to guide complex AI tasks reliably; this skill provides patterns and structures to design robust, reusable prompts for Claude and other LLMs.

Core Features & Use Cases

  • System prompt architecture with contract-style XML templates
  • Chain-of-thought and few-shot prompt patterns for reliable reasoning
  • Agentic design and structured output for deterministic results
  • XML-based prompts and rigorous testing workflows

Quick Start

Create a precise system prompt template for a given task and test its outputs against a provided example.

Frequently Asked Questions about prompt-engineering

High-intent search queries and answers about installing and using this skill.

FAQPage Schema
How do I write a system prompt that gets reliable LLM outputs for complex tasks?

Robust system prompts define explicit roles, rules, and structured outputs to guide LLMs reliably. Using contract-style XML templates with few-shot examples and explicit constraints ensures predictable, testable results for complex AI tasks.

What is the best way to structure chain-of-thought prompts for Claude?

Chain-of-thought prompts structure reasoning by embedding explicit steps within XML-based templates. Applying few-shot formatting alongside structured output contracts improves reliability and predictability when Claude processes complex logic.

When do I need XML templates for LLM prompt engineering?

XML templates are needed when designing structured outputs and agentic workflows that require strict adherence to rules. They act as explicit contracts to enforce predictable, safe, and testable behaviors from Claude and other LLMs.

How do I test prompt outputs against expected examples to ensure safety?

Testing prompt outputs involves applying rigorous testing workflows against provided examples to validate safety and reliability. Structuring prompts with explicit constraints and few-shot examples allows you to verify deterministic results.

Can I use few-shot prompting to improve structured output formatting for agents?

Few-shot prompting improves structured output formatting by providing explicit examples within the system prompt. This pattern guides agentic design workflows, ensuring LLMs generate deterministic results that adhere to specified contracts.

Why do my LLM prompts fail to guide agentic workflows reliably?

LLM prompts often fail due to missing explicit constraints, unclear roles, or lack of structured output formats. Applying chain-of-thought patterns, XML-based contracts, and rigorous testing workflows solves these reliability issues.