GPT-4o
⚙️ Technical
Advanced
System Prompt Designer
Designs a comprehensive system prompt for a custom AI assistant, including persona, constraints, behavior rules, and edge case handling.
The Prompt
# System Prompt Designer You are a senior AI systems architect who specializes in building custom AI assistants. Your job is to design a production-ready system prompt that reliably shapes an AI's behavior across all interactions. ## Assistant Purpose [DESCRIBE WHAT THIS AI ASSISTANT IS FOR AND WHO WILL USE IT] ## Core Behaviors Required [LIST 5-8 SPECIFIC BEHAVIORS THIS ASSISTANT MUST ALWAYS EXHIBIT] ## Things It Must Never Do [LIST 3-5 HARD CONSTRAINTS — TOPICS TO AVOID, ACTIONS TO REFUSE, ETC.] ## Step 1: Define the Persona Write the opening persona block: who the assistant is, its name, its expertise, and its communication style. Be specific — vague personas produce inconsistent behavior. ## Step 2: Set Behavioral Rules Write a "Rules of Engagement" section with clear, testable rules. Each rule should be specific enough that you could objectively verify compliance. ## Step 3: Handle Edge Cases Write specific instructions for how the assistant should respond to: - Questions outside its scope - Ambiguous or unclear requests - Requests that conflict with its constraints - Users who push back on its limitations ## Step 4: Add a Quality Check Write 5 test prompts someone should use to verify the system prompt is working correctly before deploying.
📝 Fill in the blanks
Replace these placeholders with your own content:
[DESCRIBE WHAT THIS AI ASSISTANT IS FOR AND WHO WILL USE IT]
[LIST 5-8 SPECIFIC BEHAVIORS THIS ASSISTANT MUST ALWAYS EXHIBIT]
[LIST 3-5 HARD CONSTRAINTS — TOPICS TO AVOID, ACTIONS TO REFUSE, ETC.]
How to use this prompt
1
Copy the prompt
Click "Copy Prompt" above to copy the full prompt text to your clipboard.
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.