Stop Ableton Live playback. Use before editing or when the user asks to halt audio. Idempotent: already-stopped sessions return changed=false; transport state is async, so the result returns current song time and is marked unverified.
AI agents invoke stop to trigger actions in Ableton Mind. What it does depends on the arguments the agent supplies, and its effects often reach beyond the immediate call — builds kicked off, notifications sent, workflows started.
This tool executes a command that controls the runtime behavior of Ableton Live—specifically stopping audio playback and transport. While the action is idempotent and reversible (playback can be restarted), it is fundamentally an Execute operation because it triggers an external system operation whose effect depends on current application state.
From the tool's definition Tool description states it 'Stop[s] Ableton Live playback' and 'halt[s] audio', which are runtime actions that trigger external operation (transport state control) in the Ableton Live application.
Attacks that exploit this kind of access
Stop Ableton Live playback. Use before editing or when the user asks to halt audio. Idempotent: already-stopped sessions return changed=false; transport state is async, so the result returns current song time and is marked unverified. It is categorised as a Execute tool in the Ableton Mind MCP Server, which means it can trigger actions or run processes. Use rate limits and argument validation.
Register the Ableton Mind MCP server in PolicyLayer and add a rule for stop: 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.
stop is a Execute tool with high risk. Execute tools should be rate-limited and have argument validation enabled.
Yes. Add a rate_limit block to the stop 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 stop. 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.
stop 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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