AI agents call get_daily_weigh_ins to retrieve information from Garmin Connect without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
This tool retrieves historical health data (weigh-in measurements) for a specified date. It performs a query/fetch operation without creating, modifying, deleting, or executing any actions. The blast radius is minimal—an AI agent can only read existing weight measurement records, which poses no security or operational risk beyond potential privacy concerns about data exposure.
From the tool's definition The tool name is "get_daily_weigh_ins" and the description states it "Get[s] all weigh-in entries for a specific date". The verb 'get' and the action of retrieving/querying weigh-in data indicates a read-only operation with no side effects.
Documented attack patterns abuse exactly the kind of access get_daily_weigh_ins gives an agent:
PolicyLayer is an MCP gateway — it sits between your AI agents and Garmin Connect, and nothing reaches the server without passing your rules. This is the rule we recommend for get_daily_weigh_ins:
{
"version": "1",
"default": "deny",
"tools": {
"get_daily_weigh_ins": {}
}
}get_daily_weigh_ins is read-only, so it stays allowed — but everything else on the server is denied unless you say otherwise.
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Get all weigh-in entries for a specific date. It is categorised as a Read tool in the Garmin Connect MCP Server, which means it retrieves data without modifying state.
Register the Garmin Connect MCP server in PolicyLayer and add a rule for get_daily_weigh_ins: 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 Garmin Connect. Nothing to install.
get_daily_weigh_ins 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_daily_weigh_ins 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_daily_weigh_ins. 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_daily_weigh_ins is provided by the Garmin Connect MCP server (nicolasvegam/garmin-connect-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
Deterministic rules across all 97 Garmin Connect tools. Per-identity grants. Full audit log. Live in minutes. Nothing to install.
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97 Garmin Connect tools catalogued and risk-classified — across an index of 42,500+ MCP servers.