Find or create a track by name and type. Use when a workflow needs a named target track but should avoid duplicates. Idempotent: returns changed=false when the track already exists; verified by returned name/type.
AI agents use track_upsert to create or update resources in Ableton Mind — usually the action step of a workflow, after the agent has gathered context. Every call changes real data in your Ableton Mind environment.
This tool creates or modifies music production state by adding new tracks to an Ableton Live set. It is reversible (tracks can be deleted) and has no permanent destructive effects. It does not execute arbitrary code, delete data, or move money.
From the tool's definition Tool description uses 'create' and 'upsert' (update/insert pattern), indicating it modifies state by creating new tracks or ensuring their existence.
Attacks that exploit this kind of access
Find or create a track by name and type. Use when a workflow needs a named target track but should avoid duplicates. Idempotent: returns changed=false when the track already exists; verified by returned name/type. It is categorised as a Write tool in the Ableton Mind MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.
Register the Ableton Mind MCP server in PolicyLayer and add a rule for track_upsert: 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 Mind. Nothing to install.
track_upsert 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 track_upsert 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 track_upsert. 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.
track_upsert is provided by the Ableton Mind MCP server (ableton-mind). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
Every MCP server has a record like this.
Type a name, get the same breakdown: verified identity, auth posture, risk grade, capabilities, recommended policy.
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