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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:

  1. Add specific details to your prompt
  2. Include examples of what you want
  3. Specify the target audience
  4. 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:

  1. Provide example sentences in your desired tone
  2. Name specific writers/brands to emulate
  3. List words to avoid or include
  4. Specify formality level (1-10 scale)

Problem: Hallucinations/Inaccuracies

Solutions:

  1. Ask the AI to cite sources
  2. Request confidence levels
  3. Tell it to say "I don't know" when uncertain
  4. Break complex questions into verifiable parts

Problem: Inconsistent Outputs

Solutions:

  1. Use structured templates
  2. Lower temperature settings (if available)
  3. Be more specific about requirements
  4. 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

IssueQuick Fix
Too formalAdd "conversational tone"
Too casualAdd "professional language"
Too longAdd "in 3 sentences or less"
Off-topicAdd "Focus only on..."
Missing structureAdd 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.

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