Remove a workout from the Garmin calendar without deleting the workout definition.
AI agents call unschedule_workout to permanently remove resources in Garmin — typically in cleanup and lifecycle workflows. It does its job in a single call, and there is no undo.
Unscheduling removes a calendar entry irreversibly (there's no indication of an undo mechanism). While the workout definition itself is preserved, the scheduled calendar entry is permanently removed. This qualifies as Destructive since the calendar event cannot be restored without re-scheduling. Severity is medium because only a calendar entry is lost, not the underlying workout data.
From the tool's definition Remove a workout from the Garmin calendar without deleting the workout definition
Attacks that exploit this kind of access
Remove a workout from the Garmin calendar without deleting the workout definition. It is categorised as a Destructive tool in the Garmin MCP Server, which means it can permanently delete or destroy data. Block by default and require explicit approval.
Register the Garmin MCP server in PolicyLayer and add a rule for unschedule_workout: 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 Garmin. Nothing to install.
unschedule_workout is a Destructive tool with critical risk. Critical-risk tools should be blocked by default and only enabled with explicit human approval.
Yes. Add a rate_limit block to the unschedule_workout 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 unschedule_workout. 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.
unschedule_workout is provided by the Garmin MCP server (marcelohensantos/garmin-mcp). 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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