voice_clone · ElevenLabs MCP Server MCP: Risk & Policy

WHAT IT DOES

What voice_clone does on ElevenLabs MCP Server

AI agents use voice_clone to create or update resources in ElevenLabs MCP Server — usually the action step of a workflow, after the agent has gathered context. Every call changes real data in your ElevenLabs MCP Server environment.

WHY IT NEEDS A POLICY

Why voice_clone needs a policy

Based on the server description explicitly mentioning voice cloning as a core capability, this tool likely creates a cloned voice from audio samples, which is a Write operation (creates new data). Severity is high because voice cloning can be misused for impersonation or identity fraud. Confidence is reduced due to empty tool description.

From the tool's definition Tool name 'voice_clone' on a server described as enabling voice cloning capabilities ('clone voices')

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

voice_clone Rate-limited

voice_clone stays usable, but capped — an agent stuck in a loop can't make hundreds of changes a minute. Everything else on the server is denied unless you say otherwise.

View as policy code

policy.json

{
  "version": "1",
  "default": "deny",
  "tools": {
    "voice_clone": {
      "limits": [
        {
          "counter": "voice_clone_rate",
          "window": "minute",
          "max": 30,
          "scope": "grant"
        }
      ]
    }
  }
}

LIMIT THIS TOOL →

Instant setup, no code required.

PolicyLayer is an MCP gateway: every tool call is checked against your rule before it reaches ElevenLabs MCP Server, so you can run agents against it safely.

FAQ

Questions about voice_clone

What does the voice_clone tool do? +

voice_clone. It is categorised as a Write tool in the ElevenLabs MCP Server MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.

How do I enforce a policy on voice_clone? +

Register the ElevenLabs MCP Server MCP server in PolicyLayer and add a rule for voice_clone: allow, deny, rate-limit, or require approval. Point your MCP client at the PolicyLayer proxy URL and the rule is enforced on every call, before it reaches ElevenLabs MCP Server. Nothing to install.

What risk level is voice_clone? +

voice_clone is a Write tool with medium risk. Write tools should be rate-limited to prevent accidental bulk modifications.

Can I rate-limit voice_clone? +

Yes. Add a rate_limit block to the voice_clone rule in your PolicyLayer policy. For example, setting max: 10 and window: 60 limits the tool to 10 calls per minute. Rate limits are tracked per agent session and reset automatically.

How do I block voice_clone completely? +

Set action: deny in the PolicyLayer policy for voice_clone. The AI agent will receive a policy violation error and cannot call the tool. You can also include a reason field to explain why the tool is blocked.

What MCP server provides voice_clone? +

voice_clone is provided by the ElevenLabs MCP Server MCP server (nguyendinhsinh361/elevenlabs-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.