speak_tumugi_reimu · PVV MCP Server MCP: Risk & Policy

WHAT IT DOES

What speak_tumugi_reimu does on PVV MCP Server

AI agents invoke speak_tumugi_reimu to trigger actions in PVV MCP Server. What it does depends on the arguments the agent supplies, and its effects often reach beyond the immediate call — builds kicked off, notifications sent, workflows started.

WHY IT NEEDS A POLICY

Why speak_tumugi_reimu needs a policy

This tool triggers text-to-speech synthesis via the VOICEVOX Web API, which constitutes executing an external operation (audio generation/playback). It is not a simple read or write — it actively invokes an external service to produce audio output. Severity is medium because misuse could generate unwanted audio content or abuse the external API, but the blast radius is limited.

From the tool's definition 「博麗霊夢」として発話を行うツール (tool that performs speech as Reimu Hakurei)

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

speak_tumugi_reimu Rate-limited

speak_tumugi_reimu 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.

View as policy code

policy.json

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

RATE-LIMIT THIS TOOL →

Instant setup, no code required.

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

FAQ

Questions about speak_tumugi_reimu

What does the speak_tumugi_reimu tool do? +

東方Projectのキャラクター「博麗霊夢」として発話を行うツール。通常会話用。. It is categorised as a Execute tool in the PVV MCP Server MCP Server, which means it can trigger actions or run processes. Use rate limits and argument validation.

How do I enforce a policy on speak_tumugi_reimu? +

Register the PVV MCP Server MCP server in PolicyLayer and add a rule for speak_tumugi_reimu: 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 PVV MCP Server. Nothing to install.

What risk level is speak_tumugi_reimu? +

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

Can I rate-limit speak_tumugi_reimu? +

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

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

speak_tumugi_reimu is provided by the PVV MCP Server MCP server (lambda-tuber/pvv-mcp-server). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.