auto_play_scenes · Ableton MCP: Risk & Policy

WHAT IT DOES

What auto_play_scenes does on Ableton MCP

AI agents invoke auto_play_scenes to trigger actions in Ableton MCP. 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 auto_play_scenes needs a policy

This tool triggers external operations in Ableton Live by automatically playing all scenes sequentially. It is an Execute category action as it controls real-time playback in a DAW environment. Misuse could cause unintended audio output or disrupt a live session, warranting medium severity.

From the tool's definition 全シーンを自動的に順番に再生 (automatically plays all scenes in sequence) — triggers playback operations in Ableton Live via OSC connection

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

auto_play_scenes Rate-limited

auto_play_scenes 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": {
    "auto_play_scenes": {
      "limits": [
        {
          "counter": "auto_play_scenes_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 Ableton MCP, so you can run agents against it safely.

FAQ

Questions about auto_play_scenes

What does the auto_play_scenes tool do? +

全シーンを自動的に順番に再生（各シーンの小節数を指定）. It is categorised as a Execute tool in the Ableton MCP MCP Server, which means it can trigger actions or run processes. Use rate limits and argument validation.

How do I enforce a policy on auto_play_scenes? +

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

What risk level is auto_play_scenes? +

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

Can I rate-limit auto_play_scenes? +

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

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

auto_play_scenes is provided by the Ableton MCP server (keigotak/abletonmcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.