Calculate the current Insulin on Board (IOB) - the amount of active insulin still working in the body. Uses recent insulin doses from the logbook and calculates decay based on Duration of Insulin Action (DIA). Useful for dosing decisions and understanding current insulin activity.
AI agents call get_iob to retrieve information from Diabetes:M MCP Server without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
This tool retrieves and calculates values from existing health data (insulin doses, DIA) without creating, modifying, or deleting any records. It performs a read-only statistical computation on historical insulin data to inform the user. While the information could be medically consequential, the tool itself has no side effects on the system or data state.
From the tool's definition Tool description states it 'Calculate[s] the current Insulin on Board' and 'Uses recent insulin doses from the logbook and calculates decay'.
Attacks that exploit this kind of access
Calculate the current Insulin on Board (IOB) - the amount of active insulin still working in the body. Uses recent insulin doses from the logbook and calculates decay based on Duration of Insulin Action (DIA). Useful for dosing decisions and understanding current insulin activity. It is categorised as a Read tool in the Diabetes:M MCP Server MCP Server, which means it retrieves data without modifying state.
Register the Diabetes:M MCP Server MCP server in PolicyLayer and add a rule for get_iob: 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 Diabetes:M MCP Server. Nothing to install.
get_iob 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_iob 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_iob. 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_iob is provided by the Diabetes:M MCP Server MCP server (sedoglia/diabetes-m-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.
Teams ship this data inside their own products. See what a licence covers →