prompt-engineer
Optimize prompts for LLMs. Use when crafting system prompts or improving agent performance.
What this skill does
# Prompt Engineering
Craft effective prompts for LLM applications.
## When to Use
- Creating system prompts
- Improving AI output quality
- Building AI agents
- Optimizing token usage
- Designing prompt templates
## Core Techniques
### Role Setting
```
You are an expert [role] with [X] years of experience in [domain].
Your task is to [specific goal].
```
### Chain of Thought
```
Think through this step by step:
1. First, analyze [aspect 1]
2. Then, consider [aspect 2]
3. Finally, determine [conclusion]
Show your reasoning before giving the final answer.
```
### Few-Shot Examples
```
Here are examples of the expected format:
Input: [example 1 input]
Output: [example 1 output]
Input: [example 2 input]
Output: [example 2 output]
Now process this input:
Input: {user_input}
Output:
```
### Structured Output
```
Respond in the following JSON format:
{
"analysis": "your analysis here",
"confidence": 0.0-1.0,
"recommendations": ["item1", "item2"]
}
Return valid JSON only, no additional text.
```
## Prompt Templates
### Code Review
```
You are a senior code reviewer. Review the code for:
1. Security vulnerabilities
2. Performance issues
3. Code quality and readability
4. Best practices violations
For each issue:
- Severity: Critical/High/Medium/Low
- Location: file:line
- Issue: description
- Fix: suggested solution
Code to review:
{code}
```
### Data Extraction
```
Extract the following information from the text:
- Name: person's full name
- Email: email address
- Company: organization name
- Role: job title
If information is not found, use "NOT_FOUND".
Return as JSON.
Text:
{text}
```
### Classification
```
Classify the following text into one of these categories:
- POSITIVE
- NEGATIVE
- NEUTRAL
Consider tone, sentiment, and overall message.
Respond with only the category name.
Text: {text}
Category:
```
## Best Practices
| Practice | Do | Don't |
| ------------ | ------------------------ | --------------------- |
| Instructions | Be specific and explicit | Be vague |
| Format | Specify output format | Assume format |
| Examples | Include 2-3 examples | Zero-shot for complex |
| Constraints | Set clear boundaries | Leave open-ended |
| Length | Set max length if needed | Allow unlimited |
## Testing Prompts
1. Test with edge cases
2. Try adversarial inputs
3. Check consistency across runs
4. Measure output quality
5. Track token usage
## Examples
**Input:** "Create a prompt for summarization"
**Action:** Design prompt with length constraint, key points extraction, format spec
**Input:** "Improve this prompt's output"
**Action:** Add examples, clarify instructions, specify format, test iterations
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