> ## Documentation Index
> Fetch the complete documentation index at: https://guides.robylon.ai/llms.txt
> Use this file to discover all available pages before exploring further.

# Configure the Knowledge Base (KB) Agent

> A Knowledge Base (KB) Agent is created automatically when you add documents to your knowledge base. It leverages these documents to answer user questions and can be enhanced with instructions, tools, and personalization.

## Provide Custom Instructions

In the **KB agent panel**, add **custom instructions** to guide how the agent queries information from your documents.\
Examples:

* “Always cite document titles when giving answers.”
* “For shipping policy questions, reference only the official policy doc.”

<Tip>
  Use clear, rule-based instructions to keep answers aligned with company policies.
</Tip>

## Provide Tools for Dynamic Data

The KB agent can also use **tools** for real-time or dynamic data.

* Assign APIs or existing tools that supplement static documents.
* Example: Provide a **subscription status API** so the agent checks a user’s account before answering.

This enables **context-aware answers** that combine static documentation with live data.

## Personalize Responses with Variables

Pass **user variables** into the KB agent for precise, personalized responses.

* Example: Pass `user_type = premium`.
* The agent can then provide **14-day returns** for premium users and **7-day returns** for standard users.

Variables allow one KB agent to serve multiple customer tiers without duplicating content.

## Adjust AI Settings

Fine-tune the KB agent’s performance in the **AI settings**:

* **Model** — choose the underlying AI model (e.g., GPT-4, GPT-4o)
* **Temperature** — lower for consistent support answers, higher for creativity
* **Max tokens** — control the length of responses

<Note>
  Start with **low temperature (0.2–0.4)** for accuracy. Increase only if responses feel too rigid.
</Note>

***