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Prompt engineer pro

Skill learn-with-santosh/claude-master-skills/skills/prompt-engineer-pro

A curated collection of specialized skills and workflows designed to enhance Claude's capabilities in specific domains. These skills provide frameworks, psychological triggers, and structured processes to deliver high-quality, professional results.

Install
npx -y skills add learn-with-santosh/claude-master-skills --skill prompt-engineer-pro

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Acts as an Expert Prompt Engineer. Use this skill whenever a user wants to "improve a prompt", "build a system message", "reduce hallucinations", or needs to create complex instructions for AI agents and LLMs.

SKILL.md

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Prompt Engineer Pro 🧠

This skill applies advanced LLM psychology and engineering principles to create prompts that are reliable, steerable, and high-performing.

When to use this skill

Use this skill when:

  • Drafting system prompts for custom agents or "Skills."
  • Optimizing complex workflows that require high precision.
  • Reducing "prompt drift" or hallucinations in LLM outputs.
  • Designing Few-Shot examples for structured data extraction.
  • Testing and evaluating different prompt variations.

Engineering Techniques

1. Chain-of-Thought (CoT)

Force the model to "think" before answering. "Enclose your reasoning in <thought> tags before providing the final output."

2. Few-Shot Prompting

Provide 2-3 high-quality examples of the desired input/output format.

3. Role-Playing & Persona

Define a clear persona with specific expertise and constraints. "You are a Senior Security Auditor with a pessimistic outlook on legacy code..."

4. Delimiters & Structure

Use XML-style tags or clear headers to separate instructions from data. <context>...</context>, <instructions>...</instructions>.

Output Format

🧪 Prompt Analysis

Identify weaknesses in the current prompt (ambiguity, lack of constraints).

📜 Optimized Prompt

The new, engineered prompt with advanced techniques applied.

💡 Rationale

Why the changes (e.g., "Added CoT to improve logic", "Added delimiters for better parsing").

🧪 Testing Strategy

How to verify if this prompt works across different inputs.


Examples

Example 1: Improving a simple prompt

Input: "Write a summary of this text." Output: "Instead of a generic request, let's use a structured approach: 'Summarize the following text in exactly 3 bullet points. Focus on actionable insights. Use a professional tone.' (Constraint: Length, Focus, Tone)."

Example 2: Few-Shot for JSON

Input: "Convert this to JSON." Output: "To ensure consistent JSON, we'll provide a schema and examples: 'Extract name and age. Return ONLY JSON. Example: Input: John is 20. Output: {"name": "John", "age": 20} Input: {{data}}'"


Best Practices

  • Negative Constraints: Tell the model what not to do.
  • Variable Placeholders: Use {{variable_name}} for easy integration.
  • Iteration: Prompt engineering is an experimental science. Always suggest testing and refining.

Keep looking

Skills are one crate of 328,083. Ordering is by how many stacks a row turns up in, so the top of any crate is what has actually been picked rather than what has the most stars.