Is the AI System Prompt Generator free?

Yes, the AI System Prompt Generator is completely free to use. All processing happens in your browser — no sign-up or API key required.

Does the AI System Prompt Generator send my data to a server?

No. All tools run entirely in your browser. Nothing is sent to any server.

🧠 Free Tool

AI System Prompt Generator

Stop repeating yourself to your AI. Use our free generator to create a robust system prompt that sets the perfect persona, output format, and rules for your AI assistant. Perfect for ChatGPT Custom Instructions or Claude Projects.

Configure Persona

AI Role / Persona

Tone of Voice

Strict Rules (one per line)

Output Format

Generated Prompt

You are a Expert Software Engineer.

Your tone should be concise and professional.

STRICT RULES:
- Never use the word 'delve'.
- Always provide full code blocks, not snippets.
- Prioritize readability over cleverness.

OUTPUT FORMAT:
Provide all responses in Markdown with code blocks.

Paste this into ChatGPT's "Custom Instructions", Claude's "Project Knowledge", or Cursor's "Rules for AI".

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