AI agents call get_latest_weight 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 personal health data (weight metric) from Garmin Connect without modifying, deleting, or executing any operations. It is purely informational and read-only, making it a Read category tool with low severity since unauthorized access to weight data, while a privacy concern, has minimal blast radius compared to tools that could delete activities or modify training records.
From the tool's definition Tool name 'get_latest_weight' and description 'Get the most recent weight entry' indicate a retrieval operation with no side effects. The verb 'Get' and the read-only nature of fetching the most recent entry confirm this is a query/fetch action.
Documented attack patterns abuse exactly the kind of access get_latest_weight 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_latest_weight:
{
"version": "1",
"default": "deny",
"tools": {
"get_latest_weight": {}
}
}get_latest_weight is read-only, so it stays allowed — but everything else on the server is denied unless you say otherwise.
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Get the most recent weight entry. 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_latest_weight: 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_latest_weight 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_latest_weight 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_latest_weight. 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_latest_weight 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.