• NEW AGENT
  • UPDATED AGENT
  • VOICE LIST
  • HUMAN ONLY

How to manage voice agent personalities with your AI

Connect Retell AI to your agent and start tweaking how it speaks and behaves. You can build new personas or just update existing ones.

Ask AI about this page

Short answer

How can I change my voice agent's personality?

You can use your AI to create new agents with specific instructions or update the voice and behavior of an existing one. This gives you direct control over the agent's tone and logic. You'll see how the tools handle these changes below.

The results of your requests

Where your changes land

Your AI maps your natural language requests to specific Retell AI actions.

NEW AGENT

Fresh personas

The AI sets up a brand new agent with the instructions and voice you described. You'll find the new agent waiting in your Retell AI dashboard.

UPDATED AGENT

Refined behavior

The AI modifies an existing agent's instructions or voice. This is how you fix a tone that feels wrong or change a voice without starting over.

VOICE LIST

Voice selection

The AI pulls a list of available text-to-speech voices. You can check what's available before deciding which one fits your agent's vibe.

HUMAN ONLY

Manual adjustments

If you need to perform deep architectural changes or complex logic, the AI will tell you. You'll handle those specific tasks directly in Retell AI.

The workflow

What your AI does when you ask for personality changes.

Your AI acts as the bridge between your chat interface and the Retell AI configuration.

  1. Build new personas

    The AI sets up a new agent using your specific personality descriptions and voice choices.

    create_agent

  2. Modify existing agents

    The AI updates the instructions or the voice of an agent you already have live.

    update_agent

  3. Configure the brain

    The AI creates a custom LLM configuration to ensure the agent's logic matches its personality.

    create_llm

  4. Check voice options

    The AI looks up the available text-to-speech options so you can pick the right sound.

    list_voices

Try it

Copy these to start.

Use these prompts to trigger the Retell AI tools.

Starting points

These are opening lines. Swap out the agent IDs and voice names for the ones you actually want to use.

Retell AI Connector

You're all set. Choose your MCP client and follow the setup instructions.

Connector linkhttps://edge.vinkius.com/vk_preview_7z3T4F0oJiK1uBA1iK2nSyQSG5YggPL6GvYgb38S/mcp

Claude Desktop

Follow the steps below to connect in seconds.

  1. 1In Claude Desktop, open Settings → Connectors.
  2. 2Click “Add custom connector” and paste the connector link above as the remote MCP server URL.
  3. 3Click Add and start a new chat — Retell AI capabilities are ready to use.
Configuration · claude_desktop_config.jsonCopy
{
  "mcpServers": {
    "retell-ai-mcp": {
      "url": "https://edge.vinkius.com/vk_preview_7z3T4F0oJiK1uBA1iK2nSyQSG5YggPL6GvYgb38S/mcp"
    }
  }
}
Copy into chat04

  • Create a new agent named 'Support Bot' with a professional tone and use the 'friendly_male' voice.

  • Update the agent with ID 'agent_123' to be more concise and energetic in its responses.

  • List all available voices so I can pick a new one for my sales agent.

  • Create a new LLM for my 'Concierge' agent to make it more helpful with scheduling tasks.

  • Claude
  • ChatGPT
  • Cursor
  • VS Code
  • Windsurf
  • Claude Code
  • JetBrains
  • Cline

Start here

Connect Retell AI once, then ask.

Just link your Retell AI account. Your credentials stay encrypted, and you can immediately start managing agents through your AI client.

Connect Retell AI to your AI

FAQ

How this task behaves

  • 01

    Can the AI delete my existing agents?

    No. The AI can only create or update agents. You have to handle deletions manually in Retell AI.

  • 02

    Can I change the voice of an agent?

    Yes. You can use the AI to update an existing agent with a different voice from the available list.

  • 03

    Does the AI handle the actual phone calls?

    No. The AI only manages the configuration, instructions, and voices. The actual calling is handled by Retell AI.

  • 04

    Can I see all the voices available in Retell AI?

    Yes. You can ask the AI to list the available voices so you can choose one.

  • 05

    Can the AI create a custom LLM for my agent?

    Yes. The AI can create a new LLM configuration to power your agent's personality.

  • More questions about Retell AI? The Connector page answers them. See everything the Retell AI Connector can do

Connect Retell AI to Claude, Cursor, ChatGPT & more