AI agents call list_care_plans to retrieve information from Healow without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
This tool retrieves (lists) clinical CarePlan resources for a specific patient. It performs a query-like operation with no side effects, fitting the Read category. Severity is medium rather than low because care plans are sensitive personal health information (PHI) whose unauthorized exposure could harm patient privacy and inform decisions about their treatment, though the tool itself has no destructive or financial…
From the tool's definition Tool name 'list_care_plans' and description 'List CarePlan resources for the launch patient' indicate a retrieval operation with no modification or deletion of data.
Attacks that exploit this kind of access
List CarePlan resources for the launch patient. It is categorised as a Read tool in the Healow MCP Server, which means it retrieves data without modifying state.
Register the Healow MCP server in PolicyLayer and add a rule for list_care_plans: 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 Healow. Nothing to install.
list_care_plans is a Read tool with low risk. Read-only tools are generally safe to allow by default.
Yes. Add a rate_limit block to the list_care_plans 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 list_care_plans. 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.
list_care_plans is provided by the Healow MCP server (voysi-ia/healow-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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