intervals_delete_activity
AI agents call intervals_delete_activity 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.
The 'delete' action on activity records constitutes irreversible data destruction. Even without a detailed description, the clear semantic meaning of 'delete' in the tool name, combined with context from a fitness platform (Intervals.icu manages workout/activity records), indicates this tool permanently removes data that cannot be recovered through normal means.
From the tool's definition Tool name explicitly includes 'delete' (intervals_delete_activity). The description is empty, but the verb 'delete' combined with reference to activity data from Intervals.icu indicates irreversible removal of user data.
Attacks that exploit this kind of access
intervals_delete_activity. 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_activity: 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_activity 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_activity 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_activity. 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_activity 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.
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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