// MCP TOOL REFERENCE

text_to_audio

ServerMiniMax MCP JS
CategoryFinancial

WHAT IT DOES

What text_to_audio does on MiniMax MCP JS

AI agents use text_to_audio 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 text_to_audio needs a policy

The description explicitly states the tool calls the MiniMax API and may incur costs. While its primary function is a Write operation (generating and saving an audio file), the financial implication of API usage costs elevates it to the Financial category per the severity hierarchy. Misuse by an AI agent could result in repeated API calls generating unexpected charges.

From the tool's definition This tool calls MiniMax API and may incur costs.

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

POLICY

How to control text_to_audio

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 text_to_audio:

policy.json

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

Any call to text_to_audio 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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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 text_to_audio

What does the text_to_audio tool do? +

Convert text to audio with a given voice and save the output audio file to a given directory. If no directory is provided, the file will be saved to desktop. If no voice ID is provided, the default voice will be 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 text_to_audio? +

Register the MiniMax MCP JS MCP server in PolicyLayer and add a rule for text_to_audio: 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 text_to_audio? +

text_to_audio 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 text_to_audio? +

Yes. Add a rate_limit block to the text_to_audio 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 text_to_audio completely? +

Set action: deny in the PolicyLayer policy for text_to_audio. 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 text_to_audio? +

text_to_audio 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.

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