crop_clip · Ableton Copilot MCP: Risk & Policy

WHAT IT DOES

What crop_clip does on Ableton Copilot MCP

AI agents invoke crop_clip to trigger actions in Ableton Copilot 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 crop_clip needs a policy

crop_clip triggers real processes with real consequences. An agent gone sideways doesn't fire it once — it starts dozens of builds, sends mass notifications, or burns through compute before anyone looks up.

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

crop_clip Rate-limited

crop_clip 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": {
    "crop_clip": {
      "limits": [
        {
          "counter": "crop_clip_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 Copilot MCP, so you can run agents against it safely.

FAQ

Questions about crop_clip

What does the crop_clip tool do? +

Crops the clip. The region that is cropped depends on whether the clip is looped or not. If looped, the region outside of the loop is removed. If not looped, the region outside the start and end markers is removed. It is categorised as a Execute tool in the Ableton Copilot 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 crop_clip? +

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

What risk level is crop_clip? +

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

Can I rate-limit crop_clip? +

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

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

crop_clip is provided by the Ableton Copilot MCP server (xiaolaa2/ableton-copilot-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.