> ## Documentation Index
> Fetch the complete documentation index at: https://docs.8call.co/llms.txt
> Use this file to discover all available pages before exploring further.

# Set your agent's personality and voice

> Shape how your agent sounds and communicates by choosing its tone, personality, and voice model.

<Info>
  Personality controls *how* your agent communicates; voice controls *how it sounds*. Both are edited on the agent's detail page.
</Info>

## Personality

<Steps>
  <Step title="Open the Personality tab">
    Go to `/agents`, open an agent, then select **Personality** (`/agents/:id/personality`).
  </Step>

  <Step title="Choose tones">
    Pick one or more **Tones** that describe how the agent should come across (for example, friendly, professional, concise).
  </Step>

  <Step title="Describe the personality">
    Use the **Personality** text box to add detail about how the agent behaves. Click the **generate** button (the sparkles icon) to draft a personality from the agent's language if you'd rather start from a draft.

    <Check>
      Your changes are reflected in the agent prompt the next time the agent runs.
    </Check>
  </Step>
</Steps>

## Voice

<Steps>
  <Step title="Open the Voice tab">
    Select **Voice** (`/agents/:id/voice`).
  </Step>

  <Step title="Browse and preview">
    Use the **Female** and **Male** tabs to browse available voices. Click the play button next to any voice to hear a short preview.
  </Step>

  <Step title="Select and save">
    Click a voice to select it (a green "Selected" label appears), then click **Save**.

    <Check>
      "Voice updated" confirms the selection was saved to the agent.
    </Check>
  </Step>
</Steps>

## Troubleshooting

<AccordionGroup>
  <Accordion title="The generate button is disabled">
    Personality generation needs the agent's languages set first. Add at least one language on the **Overview** tab.
  </Accordion>

  <Accordion title="Voice preview won't play">
    Previews are generated on demand. Wait for the spinner to finish, check your device volume, and try a different voice if one fails.
  </Accordion>

  <Accordion title="The Save button is greyed out on Voice">
    You must have a voice selected before saving. Click a voice in the list first.
  </Accordion>
</AccordionGroup>