play_midi_file · AI Producer Hub MCP: Risk & Policy

WHAT IT DOES

What play_midi_file does on AI Producer Hub

AI agents invoke play_midi_file to trigger actions in AI Producer Hub. 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 play_midi_file needs a policy

Playing a MIDI file triggers an external operation (audio playback via hardware/software), which falls under Execute rather than a simple Read. The blast radius is medium as misuse could disrupt audio output or interfere with live production workflows. Confidence is reduced due to the empty description.

From the tool's definition Tool name 'play_midi_file' suggests triggering playback of a MIDI file; description is empty and uninformative, lowering confidence.

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

play_midi_file Rate-limited

play_midi_file 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": {
    "play_midi_file": {
      "limits": [
        {
          "counter": "play_midi_file_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 AI Producer Hub, so you can run agents against it safely.

FAQ

Questions about play_midi_file

What does the play_midi_file tool do? +

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

How do I enforce a policy on play_midi_file? +

Register the AI Producer Hub MCP server in PolicyLayer and add a rule for play_midi_file: 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 AI Producer Hub. Nothing to install.

What risk level is play_midi_file? +

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

Can I rate-limit play_midi_file? +

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

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

play_midi_file is provided by the AI Producer Hub MCP server (sandraschi/ai-producer-hub). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.