> For the complete documentation index, see [llms.txt](https://docs.knowbase.ai/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.knowbase.ai/ai-assistants/behavior.md).

# Behavior & Personality

## System prompt

The system prompt tells your assistant how to behave. Use it to set tone, role, and rules.

**Quick tone presets:** Click "Professional", "Friendly", or "Formal" to add a starting template.

## Response language

Choose whether the assistant:

* **Auto-detects** the visitor's language and responds in the same language
* **Always responds** in a specific language (English, Polish, German, French, Spanish, etc.)

## Topic guardrails

Restrict the assistant to specific topics. Enter a comma-separated list (e.g., "product support, billing, shipping"). Questions outside these topics will be politely declined.

## Follow-up suggestions

When enabled, the assistant suggests follow-up questions after each answer. Helps visitors explore the topic further.

## Fallback email collection

When the assistant can't answer a question, it can ask the visitor for their email. These leads appear in the [Leads](/ai-assistants/leads.md) tab.

## Document viewing

Toggle whether visitors can click source citations to view the actual document content. Disable this if your documents are confidential.