Delete a FHIR resource from HealthLake
AI agents call delete_fhir_resource to permanently remove resources in AWS Labs CloudWatch MCP Server — typically in cleanup and lifecycle workflows. It does its job in a single call, and there is no undo.
The tool performs an irreversible deletion operation on a FHIR resource in AWS HealthLake. This is a destructive action with critical severity due to: (1) data loss is permanent and cannot be undone, (2) FHIR resources typically contain sensitive healthcare/PHI data whose loss has compliance and operational consequences, (3) an AI agent misusing this could destroy patient records or medical data at scale.
From the tool's definition Tool name explicitly contains 'delete' and description states 'Delete a FHIR resource from HealthLake', indicating irreversible deletion of healthcare data.
Attacks that exploit this kind of access
Delete a FHIR resource from HealthLake. It is categorised as a Destructive tool in the AWS Labs CloudWatch MCP Server MCP Server, which means it can permanently delete or destroy data. Block by default and require explicit approval.
Register the AWS Labs CloudWatch MCP Server MCP server in PolicyLayer and add a rule for delete_fhir_resource: 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 AWS Labs CloudWatch MCP Server. Nothing to install.
delete_fhir_resource 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 delete_fhir_resource 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 delete_fhir_resource. 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.
delete_fhir_resource is provided by the AWS Labs CloudWatch MCP Server MCP server (awslabs.cloudwatch-mcp-server). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.