Cancel a running PPDM activity.
AI agents call cancel_activity to permanently remove resources in Ppdm — typically in cleanup and lifecycle workflows. It does its job in a single call, and there is no undo.
Cancelling a running backup activity is an irreversible action — once cancelled, the in-progress backup job is terminated and cannot be resumed. This could result in missed backup windows, data protection gaps, or loss of recovery points. The action cannot be undone, placing it in the Destructive category. Severity is high because misuse could leave systems without valid backups during a critical window.
From the tool's definition Cancel a running PPDM activity
Attacks that exploit this kind of access
Cancel a running PPDM activity. It is categorised as a Destructive tool in the Ppdm MCP Server, which means it can permanently delete or destroy data. Block by default and require explicit approval.
Register the Ppdm MCP server in PolicyLayer and add a rule for cancel_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 Ppdm. Nothing to install.
cancel_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 cancel_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 cancel_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.
cancel_activity is provided by the Ppdm MCP server (moodswing9/ppdm-mcp-server). 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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