kokoro_install

THE RISK

High Risk

Why kokoro_install needs a policy

The name implies installing the Kokoro TTS package/component onto the system, which constitutes executing an installation process with system-level side effects. The sibling tool 'kokoro_uninstall' confirms this is a paired install/uninstall operation. Installing software can have significant blast radius (arbitrary code execution, system modification). Confidence is moderate due to empty description.

From the tool's definition Tool name 'kokoro_install' suggests installation of software; description is empty and uninformative.

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

POLICY

How to control kokoro_install

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

policy.json

{
  "version": "1",
  "default": "deny",
  "tools": {
    "kokoro_install": {
      "limits": [
        {
          "counter": "kokoro_install_rate",
          "window": "minute",
          "max": 10,
          "scope": "grant"
        }
      ]
    }
  }
}

kokoro_install stays usable, but rate-capped — a runaway agent can't fire it dozens of times a minute. Everything else on the server is denied unless you say otherwise.

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

RATE-LIMIT THIS TOOL →

Free to start. No card required.

EXPLORE

Related tools and policies

More Voice Mode tools

Destructive kokoro_uninstall Uninstall kokoro-fastapi and optionally remove models and data. This tool will: Destructive voice_statistics_reset Reset all voice conversation statistics and start a new session. Clears all track Destructive whisper_uninstall Uninstall whisper.cpp and optionally remove models and data. This tool will: Execute config_reload Reload configuration from .voicemode.env files and clear all caches. This tool re Execute whisper_install whisper_install Execute whisper_model_install whisper_model_install Write refresh_provider_registry Manually refresh health checks for voice provider endpoints. Useful when a servic Write update_config Update a configuration value in the voicemode.env file. Args: key: The co

All 25 Voice Mode tools →

Execute tools on other servers

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Go deeper

High-risk tools in Voice Mode → Every high-risk tool this server exposes, in one view.
All high-risk MCP tools → Every high-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.
Agent sandbox → Bounding what an agent can execute and where the boundary should sit.
Least privilege for MCP → Granting agents the minimum tool surface the task needs.
Rate Limiting MCP Tool Calls: A Practical Guide →
MCP Security: Why Prompt Guardrails Aren't Enough →

FAQ

Questions about kokoro_install

What does the kokoro_install tool do? +

kokoro_install. It is categorised as a Execute tool in the Voice Mode MCP Server, which means it can trigger actions or run processes. Use rate limits and argument validation.

How do I enforce a policy on kokoro_install? +

Register the Voice Mode MCP server in PolicyLayer and add a rule for kokoro_install: 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 Voice Mode. Nothing to install.

What risk level is kokoro_install? +

kokoro_install is a Execute tool with high risk. Execute tools should be rate-limited and have argument validation enabled.

Can I rate-limit kokoro_install? +

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

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

kokoro_install is provided by the Voice Mode MCP server (mbailey/voicemode). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.

Enforce policy on every Voice Mode tool call.

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

CHECK YOUR STACK →