add_sidechain · Ableton MCP: Risk & Policy

WHAT IT DOES

What add_sidechain does on Ableton MCP

AI agents use add_sidechain 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 add_sidechain needs a policy

This tool configures sidechain compression in Ableton Live, which is a write/modify operation that adds or sets audio routing and effect parameters. It creates a new effect configuration but does not execute code, delete data, or involve financial transactions. The severity is medium as misconfiguration could disrupt a project's audio chain, but it is reversible.

From the tool's definition add_sidechain / サイドチェインコンプレッションを設定 (Set up sidechain compression)

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

add_sidechain Rate-limited

add_sidechain 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": {
    "add_sidechain": {
      "limits": [
        {
          "counter": "add_sidechain_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 add_sidechain

What does the add_sidechain tool do? +

サイドチェインコンプレッションを設定. 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 add_sidechain? +

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

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

Can I rate-limit add_sidechain? +

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

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

add_sidechain 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.