intervals_delete_event
AI agents call intervals_delete_event to permanently remove resources in FitnessMCP — typically in cleanup and lifecycle workflows. It does its job in a single call, and there is no undo.
Despite the empty description, the semantic meaning of 'delete' combined with the context of fitness event management indicates this tool performs irreversible data deletion. An AI agent misusing this tool could permanently remove important training events, race records, or scheduled workouts from a user's fitness tracking account. This cannot be undone and therefore falls under Destructive rather than Write.
From the tool's definition Tool name 'intervals_delete_event' contains the verb 'delete', which indicates irreversible removal of data. The tool operates on the Intervals.icu service (part of FitnessMCP), where events likely represent training sessions, races, or scheduled activities.
Attacks that exploit this kind of access
intervals_delete_event. It is categorised as a Destructive tool in the FitnessMCP MCP Server, which means it can permanently delete or destroy data. Block by default and require explicit approval.
Register the Fitness MCP server in PolicyLayer and add a rule for intervals_delete_event: 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 FitnessMCP. Nothing to install.
intervals_delete_event 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 intervals_delete_event 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 intervals_delete_event. 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.
intervals_delete_event is provided by the Fitness MCP server (senoj100-alt/fitnessmcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
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