---
title: "Knowledge overview"
description: "How knowledge sources work, how your agent uses them to answer questions, and which source types you can add."
---

**Knowledge** is the content your agent answers from: your website, documents, notes, and ready-made answers. When a customer asks a question, your agent searches its knowledge for the most relevant parts and uses them to write its reply.

To manage knowledge, open your agent and go to **Build** > **Knowledge**.

The **Add knowledge** panel has **Files**, **Website**, **Text**, and **Q&A** tabs. Choose a tab to add that type of source.

## Source types

| Type | Best for |
| --- | --- |
| [Websites and URLs](/docs/knowledge/websites-and-urls) | Your website, help center, or blog. Find pages across a site or add one page. |
| [Sitemaps](/docs/knowledge/sitemaps) | Add pages listed in your site's sitemap. |
| [File Uploads](/docs/knowledge/file-uploads) | PDFs, Word documents, and text files such as manuals and policies. |
| [Text](/docs/knowledge/text) | Information that isn't published anywhere, pasted in directly. |
| [Questions and Answers](/docs/knowledge/questions-and-answers) | Exact answers to common questions. |

## How training works

When you add a source, Chatvox reads it and prepares it for search in the background. This is called **training**. A source shows as **Ready** once it's finished, and only then does your agent use it in answers.

If your agent has no knowledge, it answers from its [instructions](/docs/agents/instructions) only.

## Knowledge storage

Each plan includes a set amount of knowledge storage, shared by all sources on an agent. The **Knowledge base** panel shows how much you're using. If you reach the limit, remove sources you no longer need or upgrade your plan. See [Usage and Limits](/docs/billing/usage-and-limits).

## Tips for better answers

- **Add the pages customers actually ask about**: pricing, shipping, returns, setup guides, and FAQs.
- **Skip pages with little text**, such as login pages or image galleries.
- **Use Q&A for answers that must be exact**, such as opening hours or refund rules.
- **Keep knowledge up to date** by [retraining](/docs/knowledge/retraining) when your content changes.