---
title: "Update Voice Agent"
description: "Update a voice agent."
---

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

# Update Voice Agent

Use the Speak AI MCP server tool `update_voice_agent` to update a voice agent.

## What does it do?

Update a voice agent. Requires the OWNER or ADMIN role. Send only the fields you
want to change; agentId, companyId, and userId are immutable and silently dropped if
sent.

## Parameters

`update_voice_agent` takes 10 parameters, 1 of them required.

| Name | Type | Required | Description |
| --- | --- | --- | --- |
| `agentId` | string | Yes | ID of the voice agent to update (from `list_voice_agents`) |
| `name` | string | No | Required on create. Trimmed, non-empty. |
| `personality` | string | No | Required on create. Free text describing the agent's tone. |
| `instructions` | string | No | Required on create. The agent's system instructions. |
| `voice` | object | No | Required on create. |
| `llm` | object | No |  |
| `avatar` | object | No | Set to attach a video avatar; avatarUrl/provider are derived server-side from the catalog row. |
| `conversationMode` | enum: voice_only, video_avatar | No |  |
| `folderId` | string | No | Folder to file this agent's conversations under. |
| `enableWebSearch` | boolean | No | Let the agent search the web mid-call, separate from any attached knowledge base. |

## Behaviour

The Speak AI MCP server publishes these behaviour hints for `update_voice_agent`.

- Can change data in your workspace.
- Can delete or overwrite data. Use with care.
- Repeating an identical call can have an extra effect.
- Stays inside Speak AI. Does not reach other systems.

## Related

- [Voice agents](/mcp/tools/voice-agents/) lists the rest of the Voice agents
  category.
- [Tool reference](/mcp/tools/) lists every Speak AI MCP server tool.
- [MCP server](/mcp/) covers setup, supported clients, and what agents can do once
  connected.

Source: https://docs.speakai.co/mcp/tools/voice-agents/update_voice_agent/index.mdx