Get information about your active FreeStyle Libre sensor including serial number, activation date, and status. Use this to check if sensor is working properly or needs replacement.
AI agents call get_sensor_info to retrieve information from LibreLink MCP Server without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
This is a pure read operation that queries sensor status information. It has no side effects, does not modify any data, and does not execute external operations. While it accesses health data from a medical device, the tool itself is non-destructive and informational. Severity is low because misuse by an AI agent would only expose existing sensor metadata, not compromise the device operation or data integrity.
From the tool's definition Tool description states 'Get information about your active FreeStyle Libre sensor' and 'Use this to check if sensor is working properly' — it retrieves sensor metadata (serial number, activation date, status) with no modification, creation, deletion, or…
Attacks that exploit this kind of access
Get information about your active FreeStyle Libre sensor including serial number, activation date, and status. Use this to check if sensor is working properly or needs replacement. It is categorised as a Read tool in the LibreLink MCP Server MCP Server, which means it retrieves data without modifying state.
Register the LibreLink MCP Server MCP server in PolicyLayer and add a rule for get_sensor_info: 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 LibreLink MCP Server. Nothing to install.
get_sensor_info 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_sensor_info 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_sensor_info. 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_sensor_info is provided by the LibreLink MCP Server MCP server (sedoglia/librelink-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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