create_chords · Ableton MCP: Risk & Policy

WHAT IT DOES

What create_chords does on Ableton MCP

AI agents use create_chords 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 create_chords needs a policy

This tool creates chord progressions in Ableton Live. It writes/generates new musical data (chord patterns) into the DAW project. This is reversible (chords can be deleted or undone), placing it in the Write category. Misuse could result in unwanted modifications to a music project, but the blast radius is limited to the current Ableton session.

From the tool's definition Tool name 'create_chords' and description 'コード進行を生成' (meaning 'Generate chord progression') indicate creation of musical data.

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

create_chords Rate-limited

create_chords 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": {
    "create_chords": {
      "limits": [
        {
          "counter": "create_chords_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 create_chords

What does the create_chords tool do? +

コード進行を生成. 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 create_chords? +

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

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

Can I rate-limit create_chords? +

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

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

create_chords 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.