Get VO2 max history and trends. VO2 max measures cardiovascular fitness in ml/kg/min.
AI agents call get_vo2max to retrieve information from Garmin Health 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 historical fitness metrics (VO2 max trends) from the user's Garmin health database. It is a read-only query operation that does not modify, delete, or execute code. The data returned (cardiovascular fitness measurements) poses minimal security risk even if accessed by an AI agent, as it cannot cause financial loss, damage systems, or alter user data. Severity is low due to limited blast radius.
From the tool's definition Tool name 'get_vo2max' and description 'Get VO2 max history and trends' indicates data retrieval with no modification, deletion, or external side effects. The server description confirms it 'enables querying Garmin health data' from Supabase.
Attacks that exploit this kind of access
Get VO2 max history and trends. VO2 max measures cardiovascular fitness in ml/kg/min. It is categorised as a Read tool in the Garmin Health MCP Server MCP Server, which means it retrieves data without modifying state.
Register the Garmin Health MCP Server MCP server in PolicyLayer and add a rule for get_vo2max: 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 Health MCP Server. Nothing to install.
get_vo2max 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_vo2max 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_vo2max. 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_vo2max is provided by the Garmin Health MCP Server MCP server (willc121/garmin-mcp-server). 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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