Delete a FHIR resource from HealthLake
AI agents call delete_fhir_resource to permanently remove resources in AWS Labs postgres 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 records from AWS HealthLake, a HIPAA-compliant medical data repository. Deletion of FHIR resources (patient records, clinical observations, etc.) cannot be undone and affects sensitive personally identifiable health information. This is Destructive rather than Execute because it explicitly performs irreversible removal, not arbitrary command execution.
From the tool's definition Tool name is 'delete_fhir_resource' and description states 'Delete a FHIR resource from HealthLake'. The verb 'delete' and explicit statement of permanent removal from a healthcare data store (HealthLake, which stores HIPAA-regulated medical records)…
Documented attack patterns abuse exactly the kind of access delete_fhir_resource gives an agent:
PolicyLayer is an MCP gateway — it sits between your AI agents and AWS Labs postgres MCP Server, and nothing reaches the server without passing your rules. This is the rule we recommend for delete_fhir_resource:
{
"version": "1",
"default": "deny",
"hide": [
"delete_fhir_resource"
]
}delete_fhir_resource disappears from the agent's tool list entirely, and any attempt to call it is denied. The rest of the server keeps working.
Free to start. No card required.
Delete a FHIR resource from HealthLake. It is categorised as a Destructive tool in the AWS Labs postgres MCP Server MCP Server, which means it can permanently delete or destroy data. Block by default and require explicit approval.
Register the AWS Labs postgres 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 postgres 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 postgres MCP Server MCP server (awslabs.postgres-mcp-server). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
Start from AWS Labs postgres MCP Server, add the rest of your stack, and see everything your agents can call. Then put policy on all of it.
Free to start. No card required.
805 AWS Labs postgres MCP Server tools catalogued and risk-classified — across an index of 43,000+ MCP servers.