set_all_clips_length · Ableton MCP: Risk & Policy

WHAT IT DOES

What set_all_clips_length does on Ableton MCP

AI agents use set_all_clips_length to create or update resources in Ableton MCP — usually the action step of a workflow, after the agent has gathered context. Every call changes real data in your Ableton MCP environment.

WHY IT NEEDS A POLICY

Why set_all_clips_length needs a policy

This tool modifies clip lengths in an Ableton Live project, which alters audio/MIDI data properties reversibly. The change can be undone in Ableton (Write operation). While it affects multiple clips at once, the impact is confined to clip duration metadata, not irreversible deletion or financial consequences.

From the tool's definition Tool name 'set_all_clips_length' and description indicating it unifies the length of all clips by specifying measure count. This modifies clip properties across the project.

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

set_all_clips_length Rate-limited

set_all_clips_length stays usable, but capped — an agent stuck in a loop can't make hundreds of changes a minute. Everything else on the server is denied unless you say otherwise.

View as policy code

policy.json

{
  "version": "1",
  "default": "deny",
  "tools": {
    "set_all_clips_length": {
      "limits": [
        {
          "counter": "set_all_clips_length_rate",
          "window": "minute",
          "max": 30,
          "scope": "grant"
        }
      ]
    }
  }
}

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 set_all_clips_length

What does the set_all_clips_length tool do? +

全クリップの長さを統一する（小節数を指定）. It is categorised as a Write tool in the Ableton MCP MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.

How do I enforce a policy on set_all_clips_length? +

Register the Ableton MCP server in PolicyLayer and add a rule for set_all_clips_length: 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 set_all_clips_length? +

set_all_clips_length is a Write tool with medium risk. Write tools should be rate-limited to prevent accidental bulk modifications.

Can I rate-limit set_all_clips_length? +

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

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

set_all_clips_length 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.