// MCP TOOL REFERENCE

voice_clone

Clone a voice using the provided audio file. New voices will incur costs when first used.\n\nNote: This tool calls MiniMax API and may incur costs. Use only when explicitly requested by the user.

ServerMiniMax MCP JS
CategoryFinancial

How to control voice_clone ↓

WHAT IT DOES

What voice_clone does on MiniMax MCP JS

AI agents use voice_clone to commit financial operations through MiniMax MCP JS — usually the final step of a payment, billing, or trading workflow. A call moves real money.

THE RISK

Critical Risk

Why voice_clone needs a policy

The tool explicitly states it incurs financial costs when cloning a voice and when the cloned voice is first used. This commits financial obligations against the user's MiniMax account, placing it in the Financial category. The severity is high because misuse could trigger repeated billing charges through voice creation operations.

From the tool's definition New voices will incur costs when first used" and "may incur costs"

Documented attack patterns abuse exactly the kind of access voice_clone gives an agent:

POLICY

How to control voice_clone

PolicyLayer is an MCP gateway — it sits between your AI agents and MiniMax MCP JS, and nothing reaches the server without passing your rules. This is the rule we recommend for voice_clone:

policy.json

{
  "version": "1",
  "default": "deny",
  "tools": {
    "voice_clone": {
      "deny_if": [
        {
          "conditions": [],
          "on_deny": "Requires human approval."
        }
      ]
    }
  }
}

Any call to voice_clone is blocked until a human approves it. The rest of the server keeps working.

Create a free account and register MiniMax MCP JS — nothing to install.
Add this policy — paste it, or build it visually.
Point your MCP client (Claude, Cursor, anything) at your gateway URL.

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Free to start. No card required.

EXPLORE

Related tools and policies

More MiniMax MCP JS tools

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Go deeper

Critical-risk tools in MiniMax MCP JS → Every critical-risk tool this server exposes, in one view.
All critical-risk MCP tools → Every critical-risk tool across the catalogue, and the policy pattern that contains them.
The MCP Attack Database → Documented attack patterns against MCP deployments — and the policies that stop them.
Human-in-the-loop → When a tool call should wait for a person — and when policy can decide alone.
Tool call approval → Approval gates on individual tool calls: auto-allow, prompt, or deny.
How to Add Spending Controls to Any MCP Agent →
Rate Limiting MCP Tool Calls: A Practical Guide →

FAQ

Questions about voice_clone

What does the voice_clone tool do? +

Clone a voice using the provided audio file. New voices will incur costs when first used.\n\nNote: This tool calls MiniMax API and may incur costs. Use only when explicitly requested by the user. It is categorised as a Financial tool in the MiniMax MCP JS MCP Server, which means it involves financial transactions. Block by default and require explicit approval.

How do I enforce a policy on voice_clone? +

Register the MiniMax MCP JS 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 MiniMax MCP JS. Nothing to install.

What risk level is voice_clone? +

voice_clone is a Financial tool with critical risk. Critical-risk tools should be blocked by default and only enabled with explicit human approval.

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 MiniMax MCP JS MCP server (minimax-ai/minimax-mcp-js). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.

Enforce policy on every MiniMax MCP JS tool call.

Start from MiniMax MCP JS, add the rest of your stack, and see everything your agents can call. Then put policy on all of it.

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10 MiniMax MCP JS tools catalogued and risk-classified — across an index of 43,000+ MCP servers.