Get the most recent glucose reading from your FreeStyle Libre sensor. Returns current glucose value in mg/dL, trend direction (rising/falling/stable), and whether the value is in target range. Use this for real-time glucose monitoring.
AI agents call get_current_glucose 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 tool only queries and returns glucose readings from the user's FreeStyle Libre sensor. It has no side effects, does not modify data, and does not execute commands or trigger external operations. Although the data returned is health-sensitive, the classification reflects the tool's action (Read), not the sensitivity of the domain.
From the tool's definition Tool retrieves 'the most recent glucose reading' and 'returns current glucose value' with trend data; described as 'real-time glucose monitoring' with no capability to modify, delete, or execute external operations. Pure data retrieval from a sensor/API.
Attacks that exploit this kind of access
Get the most recent glucose reading from your FreeStyle Libre sensor. Returns current glucose value in mg/dL, trend direction (rising/falling/stable), and whether the value is in target range. Use this for real-time glucose monitoring. 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_current_glucose: 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_current_glucose 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_current_glucose 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_current_glucose. 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_current_glucose 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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