# Write a system prompt for your AI agent

> Write a system prompt for your AI customer service agent from a few details: its job, tone, rules and when to hand over to a person. Free, no sign-up.

Canonical: https://heykiko.io/tools/ai-chatbot-system-prompt-generator
Last updated: 2026-11-05

Free tool · updated 5 November 2026

Describe your business, choose the agent's job and tone, and get a system prompt ready to paste into your AI customer service agent, with the rules that keep it honest: answer only from what it knows, never invent prices, and hand over to a person. Free.

The tool is interactive and runs on the page: [AI chatbot system prompt generator](https://heykiko.io/tools/ai-chatbot-system-prompt-generator). Free, with no sign-up.

## Questions about system prompts

### What is a system prompt?

The standing instructions an AI model reads before every conversation: who it is, what it may and may not do, and how to answer. Customers never see it.

### How do I write a system prompt for a customer service chatbot?

Say who the agent is, what it helps with, how it answers, what it never does and when it hands over to a person. The generator above writes one from your details.

### Is it free?

Yes, with no sign-up, for up to 10 prompts a day.

### Does it work with ChatGPT or other AI tools?

It's plain text, so you can paste it wherever a tool takes a system prompt or custom instructions.

### Why does every prompt say to answer only from my information?

Because an AI model with no rule like that fills gaps with guesses. Grounding it in your own content, and letting it say "I don't know", is what keeps answers right.

### Can I change what it writes?

Yes. It's a starting point: edit it, add your own rules, and test it before customers see it.

### Do you keep my details?

No. What you type is sent to an AI model to write the prompt and isn't stored.

## Related

- [Try an AI chatbot on your website](https://heykiko.io/tools/try-ai-chatbot-on-your-website)
- [WhatsApp link and QR code generator](https://heykiko.io/tools/whatsapp-link-generator)
- [WhatsApp API cost calculator](https://heykiko.io/tools/whatsapp-api-cost-calculator)
- [AI chatbot ROI calculator](https://heykiko.io/tools/ai-chatbot-roi-calculator)
- [Website AI readiness checker](https://heykiko.io/tools/website-ai-readiness-checker)
- [WhatsApp chat button generator](https://heykiko.io/tools/whatsapp-chat-button-generator)
- [WhatsApp greeting and away message generator](https://heykiko.io/tools/whatsapp-away-message-generator)
- [WhatsApp template generator and checker](https://heykiko.io/tools/whatsapp-template-generator)
- [llms.txt generator](https://heykiko.io/tools/llms-txt-generator)
- [Chatbot name generator](https://heykiko.io/tools/chatbot-name-generator)
- [Website FAQ generator](https://heykiko.io/tools/website-faq-generator)