Delete a FHIR resource from HealthLake
AI agents call delete_fhir_resource to permanently remove resources in Amazon ElastiCache Memcached MCP Server — typically in cleanup and lifecycle workflows. It does its job in a single call, and there is no undo.
This tool permanently deletes healthcare data from AWS HealthLake. Deletion of FHIR resources is irreversible and cannot be undone, making it Destructive rather than Write. The severity is high because unauthorized deletion of protected health information (PHI) in HealthLake could cause significant harm to patients and breach HIPAA/regulatory compliance.
From the tool's definition Tool name is 'delete_fhir_resource' with description 'Delete a FHIR resource from HealthLake'. The verb 'Delete' combined with 'FHIR resource' indicates irreversible removal 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 Amazon ElastiCache Memcached MCP Server MCP Server, which means it can permanently delete or destroy data. Block by default and require explicit approval.
Register the Amazon ElastiCache Memcached 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 Amazon ElastiCache Memcached 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 Amazon ElastiCache Memcached MCP Server MCP server (awslabs.memcached-mcp-server). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.