Expert guidance for crafting effective LLM prompts using proven techniques like chain-of-thought and few-shot learning
View on GitHubcameronsjo/claude-marketplace
prompt-engineering
January 21, 2026
Select agents to install to:
npx add-skill https://github.com/cameronsjo/claude-marketplace/blob/main/plugins/prompt-engineering/skills/prompt-engineering/SKILL.md -a claude-code --skill prompt-engineeringInstallation paths:
.claude/skills/prompt-engineering/# Prompt Engineering Skill Expert guidance for crafting effective prompts for LLMs and AI systems using proven techniques and patterns. ## Overview This skill provides comprehensive expertise for designing, testing, and optimizing prompts across different LLM models and use cases. ## When to Use This Skill Trigger this skill when: - Designing prompts for Claude, GPT, or other LLMs - Optimizing existing prompts for better performance - Building AI features that require LLM interactions - Creating system prompts for agents or chatbots - Implementing chain-of-thought reasoning - Testing prompt variations for consistency - Building prompt pipelines or chains - Designing few-shot learning examples - Creating role-based AI personas - Troubleshooting poor LLM outputs **Keywords:** prompt engineering, LLM, Claude, GPT, few-shot learning, chain-of-thought, prompt optimization, AI prompts, system prompts ## Core Principles ### Prompt Engineering Fundamentals 1. **Clarity and Specificity**: Be explicit about what you want 2. **Context Provision**: Give the model necessary background 3. **Format Specification**: Define exact output format desired 4. **Constraint Setting**: Establish boundaries and guidelines 5. **Example Inclusion**: Show rather than just tell (when appropriate) 6. **Iterative Refinement**: Test and improve based on outputs ### Model Characteristics to Consider - **Context Window**: How much text the model can process - **Training Cutoff**: What knowledge the model has - **Capabilities**: What the model can and cannot do - **Biases**: Known limitations or tendencies - **Temperature**: Creativity vs determinism trade-off ## Prompting Techniques ### 1. Zero-Shot Prompting Direct instruction without examples. Best for simple, well-defined tasks. ``` Analyze the sentiment of this customer review: Review: "The product arrived quickly and works great. Very satisfied!" Sentiment: ``` **When to use:** - Task is straightforward and unambiguous - Model