get_cgm_with_token
AI agents call get_cgm_with_token to retrieve information from T1D Manager without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
This tool retrieves real-time or recent blood glucose data from a CGM device via authenticated API access. It is a Read operation with no modification or deletion of data. Severity is medium because unauthorized access to a patient's glucose data could enable harmful insulin dosing decisions or privacy violations, though the tool itself performs only data retrieval.
From the tool's definition Tool name 'get_cgm_with_token' with prefix 'get_' indicates data retrieval. Sibling tools include 'get_cgm_data' and 'get_cgm_sandbox' which are clearly Read operations.
Attacks that exploit this kind of access
get_cgm_with_token. It is categorised as a Read tool in the T1D Manager MCP Server, which means it retrieves data without modifying state.
Register the T1D Manager MCP server in PolicyLayer and add a rule for get_cgm_with_token: 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 T1D Manager. Nothing to install.
get_cgm_with_token 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_cgm_with_token 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_cgm_with_token. 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_cgm_with_token is provided by the T1D Manager MCP server (junhyungkang/t1d-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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