emotion_kurono_neko · PVV MCP Server MCP: Risk & Policy

WHAT IT DOES

What emotion_kurono_neko does on PVV MCP Server

AI agents invoke emotion_kurono_neko 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 emotion_kurono_neko needs a policy

The tool triggers an external action (making an avatar display an emotion), which constitutes executing an operation on an external system. It is not a simple read, write, or destructive action. The blast radius is moderate since it affects UI/avatar state but has no financial or irreversible consequences. Confidence is somewhat limited because the description is brief and does not detail exact mechanism.

From the tool's definition 「ユーザ(ネコ)のアバターに感情表現をさせるツール」 — triggers an external operation (avatar emotion expression) on the VOICEVOX/avatar system

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

emotion_kurono_neko Rate-limited

emotion_kurono_neko 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": {
    "emotion_kurono_neko": {
      "limits": [
        {
          "counter": "emotion_kurono_neko_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 emotion_kurono_neko

What does the emotion_kurono_neko tool do? +

ユーザ(ネコ)のアバターに感情表現をさせるツール。. 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 emotion_kurono_neko? +

Register the PVV MCP Server MCP server in PolicyLayer and add a rule for emotion_kurono_neko: 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 emotion_kurono_neko? +

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

Can I rate-limit emotion_kurono_neko? +

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

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

emotion_kurono_neko 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.