pause_music · Music MCP: Risk & Policy

WHAT IT DOES

What pause_music does on Music

AI agents invoke pause_music to trigger actions in Music. 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 pause_music needs a policy

Pausing music is an external operation that affects a running media player process. It has no data persistence side effects and is easily reversible (via unpause/resume), but it does trigger an action on an external system, placing it in Execute. Blast radius is minimal — only affects local music playback.

From the tool's definition '暂停播放音乐' means 'pause playing music' — triggers an external operation (controlling music playback state)

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

pause_music Rate-limited

pause_music 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": {
    "pause_music": {
      "limits": [
        {
          "counter": "pause_music_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 Music, so you can run agents against it safely.

FAQ

Questions about pause_music

What does the pause_music tool do? +

暂停播放音乐. It is categorised as a Execute tool in the Music MCP Server, which means it can trigger actions or run processes. Use rate limits and argument validation.

How do I enforce a policy on pause_music? +

Register the Music MCP server in PolicyLayer and add a rule for pause_music: 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 Music. Nothing to install.

What risk level is pause_music? +

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

Can I rate-limit pause_music? +

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

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

pause_music is provided by the Music MCP server (jxiufen/music-mcp-server). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.