modify_arrangement_notes
Modify existing MIDI notes in an arrangement clip by ID. modifications is a JSON array:
This record as markdown: /tools/io-github-dreamrec-livepilot/modify-arrangement-notes.md
What modify_arrangement_notes does on Livepilot
AI agents use modify_arrangement_notes to create or update resources in Livepilot, usually the action step of a workflow, after the agent has gathered context. Every call changes real data in your Livepilot environment.
Why modify_arrangement_notes is rated Medium
This tool creates or modifies data (MIDI notes) reversibly within an Ableton Live arrangement. It does not delete, execute arbitrary code, or trigger irreversible destruction. A rogue agent could corrupt musical arrangements, but changes can be undone (standard undo functionality in DAWs), placing it in Write rather than Destructive.
From the tool's definition Tool name 'modify_arrangement_notes' and description 'Modify existing MIDI notes in an arrangement clip by ID' — directly modifies data within Ableton Live project.
Attacks that exploit this kind of access
The rule that runs modify_arrangement_notes safely
PolicyLayer is an MCP gateway: it sits between your AI agents and Livepilot, and checks every tool call against a rule you set before the call runs. Nothing changes on the server itself. For modify_arrangement_notes, this is the rule to start with:
modify_arrangement_notes 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.
The button opens the PolicyLayer dashboard: create your workspace, connect Livepilot, apply this rule, and every modify_arrangement_notes call is checked against it from then on.
Questions about modify_arrangement_notes
Modify existing MIDI notes in an arrangement clip by ID. modifications is a JSON array:. It is categorised as a Write tool in the Livepilot MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.
Register the Livepilot MCP server in PolicyLayer and add a rule for modify_arrangement_notes: 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 Livepilot. Nothing to install.
modify_arrangement_notes is a Write tool with medium risk. Write tools should be rate-limited to prevent accidental bulk modifications.
Yes. Add a rate_limit block to the modify_arrangement_notes 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.
Set action: deny in the PolicyLayer policy for modify_arrangement_notes. 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.
modify_arrangement_notes is provided by the Livepilot MCP server (livepilot). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
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