Summarize changes between schedules for a given endpoint/table (INSERT/UPDATE/DELETE).
AI agents call pbs-summary-of-changes to permanently remove resources in Medical MCP Server — typically in cleanup and lifecycle workflows. It does its job in a single call, and there is no undo.
An AI agent that decides to call pbs-summary-of-changes doesn't hesitate, doesn't double-check, and doesn't stop at one. Whatever it removes from Medical MCP Server is gone — there is no undo for destructive operations.
Attacks that exploit this kind of access
Summarize changes between schedules for a given endpoint/table (INSERT/UPDATE/DELETE). It is categorised as a Destructive tool in the Medical MCP Server MCP Server, which means it can permanently delete or destroy data. Block by default and require explicit approval.
Register the Medical MCP Server MCP server in PolicyLayer and add a rule for pbs-summary-of-changes: 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 Medical MCP Server. Nothing to install.
pbs-summary-of-changes 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 pbs-summary-of-changes 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 pbs-summary-of-changes. 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.
pbs-summary-of-changes is provided by the Medical MCP Server MCP server (thrownlemon/medical-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.