GuidesTroubleshooting
Debugging Your Prompts
Learn how to identify and fix common prompt engineering mistakes. Troubleshoot like a pro.
Loomi Team
Dec 20, 2025
7 min read
Debugging Your Prompts
Even experienced prompt engineers encounter issues. Here's how to systematically debug and improve your prompts.
Common Problems and Solutions
Problem: Output is Too Generic
Symptoms:
- Responses feel like they could apply to anything
- Lack of specific details
- Missing personality or voice
Solutions:
- Add specific details to your prompt
- Include examples of what you want
- Specify the target audience
- Request concrete examples in the output
Before:
2 lines
Write about productivity tips.
After:
2 lines
Write 5 productivity tips specifically for remote software developers who struggle with context-switching between coding and meetings. Include one actionable technique for each tip.
Problem: Output is Too Long/Short
Solutions:
- Specify exact word counts
- Request a specific number of items/paragraphs
- Use phrases like "be concise" or "elaborate on each point"
Problem: Wrong Tone or Style
Solutions:
- Provide example sentences in your desired tone
- Name specific writers/brands to emulate
- List words to avoid or include
- Specify formality level (1-10 scale)
Problem: Hallucinations/Inaccuracies
Solutions:
- Ask the AI to cite sources
- Request confidence levels
- Tell it to say "I don't know" when uncertain
- Break complex questions into verifiable parts
Problem: Inconsistent Outputs
Solutions:
- Use structured templates
- Lower temperature settings (if available)
- Be more specific about requirements
- Use few-shot examples
The Debugging Process
Step 1: Identify the Gap
Compare expected vs. actual output. What specifically is wrong?
Step 2: Isolate the Cause
- Is the role unclear?
- Is the intent ambiguous?
- Are constraints missing?
- Does it need examples?
Step 3: Make One Change
Change only one element at a time. This helps you understand what works.
Step 4: Test and Compare
Run the modified prompt and compare results.
Step 5: Document What Works
Build a library of successful patterns.
Quick Fixes
| Issue | Quick Fix |
|---|---|
| Too formal | Add "conversational tone" |
| Too casual | Add "professional language" |
| Too long | Add "in 3 sentences or less" |
| Off-topic | Add "Focus only on..." |
| Missing structure | Add format template |
When to Start Over
Sometimes it's faster to rewrite than debug:
- The output is completely off-base
- You've made 5+ iterations without improvement
- Your requirements have changed significantly
Prevention > Debugging
Use templates like RISEN to prevent issues before they occur. Structured prompts have fewer bugs.