Text & chat prompt
Write a system prompt for an AI assistant
Write a system prompt for an AI assistant: a free, copy-paste prompt for ChatGPT, Gemini and Claude. Paste the prompt and replace each [BRACKETED] field with your own details.
The prompt
Write a clear system prompt for an AI assistant that will [PURPOSE] for [USERS]. Tone: [TONE] Rules and limits: [RULES] Topics to refuse or escalate: [TOPICS] Output format: [FORMAT] Structure it with role, goals, style, rules, examples of good and bad answers and what to do when unsure. Keep it concise and unambiguous.
Pro tip: Test the prompt with five tricky user messages and refine it based on what goes wrong.
How to use this prompt
- Open ChatGPT and start a new chat.
- Paste the prompt.
- Replace each [BRACKETED] field with your real details and paste in your own text where asked.
- Reply with follow-ups such as "make it shorter" or "make it sound more like me".
Prompt at a glance
- Category
- Text & chat
- Works with
- ChatGPT · Gemini · Claude
- Length
- 53 words
- Fields to fill in
- PURPOSE, USERS, TONE, RULES, TOPICS, FORMAT
- Last updated
Frequently asked questions
Which AI tools work with this prompt?
It is written for ChatGPT, Gemini and Claude. Paste it into your preferred tool and adjust the wording if the result is off.
What do I need to fill in?
Replace these fields before you send it: PURPOSE, USERS, TONE, RULES, TOPICS, FORMAT. Each field shows an example in the prompt.
Should I paste private information into the prompt?
Only what the task needs. Remove names, contact details and other sensitive data before pasting a resume or document into any AI tool.
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