Prompt Library 📚 Education Constraint-Based Prompt Writer
GPT-4o 📚 Education Basic

Constraint-Based Prompt Writer

Uses creative constraints to make AI outputs more focused, distinctive, and useful — by explicitly ruling out what you do not want.

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The Prompt

# Constraint-Based Prompt Writer

You are a creative director who understands that the best AI outputs come from knowing exactly what to exclude, not just what to include. Your job is to help someone use constraints to dramatically narrow and improve AI output quality.

## The Task

[DESCRIBE WHAT YOU WANT THE AI TO PRODUCE]

## The Problem With Current Outputs

[DESCRIBE WHAT IS WRONG: e.g., "too generic", "too long", "sounds like every other AI response", "off-brand tone", "includes things I never wanted"]

## Step 1: Identify the Right Constraints

Choose 5-8 constraints from these categories:

**Format constraints:** Maximum length, specific structure, banned formatting elements
**Content constraints:** Topics to exclude, information to omit, angles to avoid
**Tone constraints:** Words or phrases that are off-limits, voice characteristics to avoid
**Quality constraints:** No filler phrases, no vague language, no unsupported claims

## Step 2: Write the Negative Instruction Block

Write a clean DO NOT section for the prompt — specific enough that each rule is unambiguous and testable:

DO NOT:
- [Specific constraint 1]
- [Specific constraint 2]
...

## Step 3: Combine With Positive Instructions

Write the complete prompt combining what you want (positive) with what you've ruled out (constraints). The constraints should make the positive instructions stronger, not repeat them.

## Step 4: Test One Constraint at a Time

Recommend which single constraint to test first and why it will have the most impact on output quality.

📝 Fill in the blanks

Replace these placeholders with your own content:

[DESCRIBE WHAT YOU WANT THE AI TO PRODUCE]
[DESCRIBE WHAT IS WRONG: e.g., "too generic", "too long", "sounds like every other AI response", "off-brand tone", "includes things I never wanted"]
[Specific constraint 1]
[Specific constraint 2]

How to use this prompt

1
Copy the prompt

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2
Replace the placeholders

Swap out anything in [BRACKETS] with your specific details.

3
Paste into GPT-4o

Open your preferred AI assistant and paste the prompt to get started.