Get glucose/blood sugar readings for a user within a date range. Returns glucose values in mg/dL with timestamps and sources.
AI agents call get_glucose_readings to retrieve information from MCP Glucose Server without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
This tool retrieves historical glucose readings within a specified date range. It performs a query operation on health storage APIs with no side effects, no data modification, no execution of external commands, and no financial implications. The data returned is informational only.
From the tool's definition Tool name 'get_glucose_readings' and description states it 'Get glucose/blood sugar readings' and 'Returns glucose values' — retrieval of health data with no modification capability.
Attacks that exploit this kind of access
Get glucose/blood sugar readings for a user within a date range. Returns glucose values in mg/dL with timestamps and sources. It is categorised as a Read tool in the MCP Glucose Server MCP Server, which means it retrieves data without modifying state.
Register the MCP Glucose Server MCP server in PolicyLayer and add a rule for get_glucose_readings: 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 MCP Glucose Server. Nothing to install.
get_glucose_readings 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_glucose_readings 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_glucose_readings. 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_glucose_readings is provided by the MCP Glucose Server MCP server (lucas-1000/mcp-glucose). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
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