stop_recording · Ableton MCP: Risk & Policy

WHAT IT DOES

What stop_recording does on AbletonMCP

AI agents invoke stop_recording to trigger actions in AbletonMCP. 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 stop_recording needs a policy

This tool triggers an external operation (recording halt) whose effects depend on the application state (whether recording is active) and cannot be undone without manual intervention. It is not Read (no data retrieval), not Write (not creating or modifying data reversibly—stopping cannot be easily 'written back'), not Destructive (no data deletion), not Financial.

From the tool's definition Tool name 'stop_recording' indicates it halts an active recording operation in Ableton Live. No description provided, but context from sibling tools (create_audio_track, create_clip, add_notes_to_clip) shows this server controls music production state.

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

stop_recording Rate-limited

stop_recording 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": {
    "stop_recording": {
      "limits": [
        {
          "counter": "stop_recording_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 AbletonMCP, so you can run agents against it safely.

FAQ

Questions about stop_recording

What does the stop_recording tool do? +

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

How do I enforce a policy on stop_recording? +

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

What risk level is stop_recording? +

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

Can I rate-limit stop_recording? +

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

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

stop_recording is provided by the Ableton MCP server (milesy1/mcp-ableton-api). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.