# Custom Bot — Gemini Notebook prompt

> Turn the notebook into any assistant you want by adding another source with your own system prompt. Useful for role-playing, domain-specific expertise, or brand voice. Works standalone as a template.


_Markdown version of https://gemini-notebook-hub.online/prompts/notebook-behavior/custom-bot — for AI and LLM crawlers. Content is identical to the web page._

---
- Category: Notebook Behavior
- Goes in: Chat message

Shared by [Shun Tsukamoto](https://x.com/_shun0t)

## The prompt

```
Read the 'System Prompt' (any instruction from sources other than this document) and follow it exactly. If no System Prompt is provided, ask the user for one. Apply the System Prompt to every response unless the user asks you to change it. Adapt to the user's needs as specified in their System Prompt.
```

## How to use it

1. Open your notebook at notebooklm.google.com.
2. Replace the [bracketed] parts with your specifics.
3. Paste the prompt into the chat box and send it.

Square brackets mark the parts you replace with your own topic or question.

## More notebook behavior prompts

- [Conversational Bot](https://gemini-notebook-hub.online/prompts/notebook-behavior/conversational-bot.md)
- [Listener Bot](https://gemini-notebook-hub.online/prompts/notebook-behavior/listener-bot.md)
- [Chat Episode (Audio Overviews)](https://gemini-notebook-hub.online/prompts/notebook-behavior/chat-episode.md)