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

# Knowledge sources

> Give a chatbot the files, web pages and videos it answers from, and keep them up to date.

A chatbot answers only from its knowledge sources. A source can be a document, a spreadsheet, a slide deck, a web page or a YouTube video. Each source belongs to one chatbot. When you add one, Vera reads it and the chatbot can answer from it once it shows as **Ready**. You can manage one chatbot's sources from its page, or every source in the workspace under **Knowledge**.

## Before you start

You need a [chatbot](/products/vera/chatbots). Tenant Owners, Workspace Admins and Workspace Members can add and remove sources.

## Add a file

<Steps>
  <Step title="Open the chatbot's sources">
    Select **Chatbots**, open the chatbot, then select **Manage Sources →**.
  </Step>

  <Step title="Start adding">
    Select **Add Source**, then **Upload File**.
  </Step>

  <Step title="Choose the file">
    Drag the file into the window. The accepted file types and sizes are listed below **Choose file**.
  </Step>

  <Step title="Or browse for it">
    To pick the file without dragging, select **Choose file** instead.
  </Step>

  <Step title="Add it">
    Select **Add Source**.
  </Step>
</Steps>

The file appears in the list as **Pending**, then **Processing**, and then **Ready** once Vera has read it. The list updates by itself while Vera reads it. Next, [try the chatbot](/products/vera/chatbots#try-it-in-live-preview) with a question the file answers.

## Add a web page or video

<Frame>
  <img src="https://mintcdn.com/intellikon-ai-ltd/wM16d87Um0QW2CyJ/images/vera/add-url.png?fit=max&auto=format&n=wM16d87Um0QW2CyJ&q=85&s=6f44f9ea91b33c49ff99ace7669220f2" alt="The Add Knowledge Source window on Add URL, with the URL box, the supported links, Cancel and Add Source." width="1010" height="524" data-path="images/vera/add-url.png" />
</Frame>

<Steps>
  <Step title="Open the chatbot's sources">
    Select **Chatbots**, open the chatbot, then select **Manage Sources →**.
  </Step>

  <Step title="Start adding">
    Select **Add Source**, then **Add URL**.
  </Step>

  <Step title="Enter the address">
    Under **URL**, paste the address of a web page or a YouTube video.
  </Step>

  <Step title="Add it">
    Select **Add Source**.
  </Step>
</Steps>

The page or video appears in the list and moves to **Ready** once Vera has read it. Vera reads one page per address, so add each page you need. It reads web pages again every seven days, so the chatbot keeps up with changes to them. Next, [see all your sources](#see-all-your-sources).

## Add a source from Knowledge

<Frame>
  <img src="https://mintcdn.com/intellikon-ai-ltd/wM16d87Um0QW2CyJ/images/vera/add-source.png?fit=max&auto=format&n=wM16d87Um0QW2CyJ&q=85&s=ab357f946d24aac3c99eb1555af50784" alt="The Add Knowledge Source window, with a chatbot chosen and Upload File selected." width="1010" height="890" data-path="images/vera/add-source.png" />
</Frame>

You can also add a source without opening the chatbot first.

<Steps>
  <Step title="Start adding">
    Select **Knowledge**, then **Add Resource**.
  </Step>

  <Step title="Choose the chatbot">
    Under **Choose a chatbot**, pick the chatbot it is for.
  </Step>

  <Step title="Add the source">
    Carry on as in [add a file](#add-a-file) or [add a web page or video](#add-a-web-page-or-video).
  </Step>
</Steps>

Next, [see all your sources](#see-all-your-sources).

## See all your sources

**Knowledge** lists the sources of every chatbot in the workspace. The figures at the top count all your sources, whenever they were added. Choose an account under **Account** to narrow the figures and the list to that account.

* Select a chatbot's name above the list to see only its sources, or **All** to see every source. Each button shows how many sources it covers.
* Use **Search sources…**, the type, status and freshness filters, and the sort to find a source.
* The list shows the sources added during the **Reporting period** at the top of the page. Choose a longer period, or **Custom**, to see older ones.

A source marked **Stale** has not been read again for more than 90 days. Its content may be out of date. Next, [keep your sources up to date](#keep-sources-up-to-date).

## Keep sources up to date

Each source in a list has buttons for what you can do with it next:

| Button         | When it shows              | What it does                                   |
| -------------- | -------------------------- | ---------------------------------------------- |
| **Retry**      | The source has **Failed**. | Vera tries to read it again.                   |
| **Re-ingest**  | The source is **Stale**.   | Vera reads it again, so it is no longer stale. |
| **Re-process** | The source is **Ready**.   | Vera reads it again.                           |

Select the eye icon on a web page or video to open the original. Next, [remove a source](#remove-a-source) you no longer need.

## Remove a source

<Warning>Removing a source deletes it and everything Vera read from it. You cannot get it back. To use it again, add it again.</Warning>

<Steps>
  <Step title="Remove it">
    Select **Remove** next to the source.
  </Step>

  <Step title="Confirm">
    Confirm that you want to remove it.
  </Step>
</Steps>

The source leaves the list and the chatbot stops answering from it. Next, go back to the [Vera overview](/products/vera/overview).

## Troubleshooting

<Accordion title="Vera says &#x22;Choose a supported file type from the list below.&#x22;">
  Save the file as one of the types listed in the window, such as PDF, Word or plain text, then add it again.
</Accordion>

<Accordion title="Vera says &#x22;This file exceeds its size limit&#x22;">
  Each file type has its own limit, shown in the window: 50 MiB for PDF, 25 MiB for Word, Excel and PowerPoint, and 5 MiB for text and web files. Split the file into smaller parts and add each one.
</Accordion>

<Accordion title="Vera says &#x22;Enter a valid HTTP or HTTPS URL.&#x22;">
  Paste the full address, starting with https\://.
</Accordion>

<Accordion title="A source will not add">
  A chatbot can have up to 100 sources. Remove one you no longer need, then add the new one.
</Accordion>

<Accordion title="A source shows Failed">
  Select **Retry**. If it fails again, check that the file opens on your computer, or that the web page opens in your browser.
</Accordion>