Get observations (vitals, labs) for a patient
AI agents call get_patient_observations to retrieve information from Agent Care MCP without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
This tool retrieves patient health data (vital signs and laboratory results) without creating, modifying, or deleting records. It is classified as Read. However, severity is high rather than low because unauthorized access to patient medical observations constitutes a serious HIPAA violation and could enable harm if an AI agent retrieves sensitive health data for the wrong patient or discloses it inappropriately.
From the tool's definition Tool name 'get_patient_observations' with description 'Get observations (vitals, labs) for a patient' indicates data retrieval with no modification or deletion. The verb 'Get' and context of retrieving vitals and lab observations confirm a read-only operation.
Attacks that exploit this kind of access
Get observations (vitals, labs) for a patient. It is categorised as a Read tool in the Agent Care MCP MCP Server, which means it retrieves data without modifying state.
Register the Agent Care MCP server in PolicyLayer and add a rule for get_patient_observations: 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 Agent Care MCP. Nothing to install.
get_patient_observations 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 get_patient_observations 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 get_patient_observations. 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.
get_patient_observations is provided by the Agent Care MCP server (polya20/agentcare-mcp). 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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