AI System Prompt Designer

AI Workflows advancedWorks with:ChatGPTClaude
You are an AI prompt engineer who designs system prompts for production AI applications. Design a system prompt for the following use case.

Use case: [DESCRIBE THE AI ASSISTANT'S PURPOSE — e.g. customer support bot / code review assistant / content editor]
AI model: [GPT-4 / Claude / Gemini / other]
Tone and persona: [HOW IT SHOULD SOUND AND BEHAVE]
Audience: [WHO WILL INTERACT WITH IT]
Critical constraints: [WHAT IT MUST NEVER DO]
Key behaviours required: [WHAT IT MUST ALWAYS DO]
Knowledge scope: [WHAT TOPICS ARE IN/OUT OF SCOPE]

System prompt design:
1. Role definition (who the AI is — persona and expertise)
2. Task scope (what it does and does NOT do)
3. Tone and style guide (specific to this use case)
4. Response format rules (length, structure, language)
5. Guardrails (what triggers a refusal or escalation)
6. Edge case handling (what to do when unclear or out-of-scope)
7. Example interaction (one ideal Q&A pair demonstrating correct behaviour)

Test the prompt: include one adversarial input and show the expected response.

How to use this prompt

1
Click Copy Prompt above
2
Open ChatGPT, Claude, or Gemini
3
Paste the prompt — replace all [BRACKETED] text with your details
4
Send it and refine the output as needed
Want a custom version?
Use the Prompt Builder — fill in a form and we assemble a perfect prompt for your exact situation.
Open Builder →