AI agents call get_activities to retrieve information from Garmin MCP Server without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
The tool retrieves activity data from Garmin Connect without modifying, deleting, or executing external operations. No side effects are indicated. This is a straightforward data retrieval operation, warranting the 'Read' category with low severity since exposure of fitness data alone does not enable destructive or financial harm.
From the tool's definition Tool name is 'get_activities' which semantically indicates data retrieval. The server description states it 'exposes your fitness and health data (activities, sleep, heart rate, steps, body composition)', and this tool appears designed to query activities…
Documented attack patterns abuse exactly the kind of access get_activities gives an agent:
PolicyLayer is an MCP gateway — it sits between your AI agents and Garmin MCP Server, and nothing reaches the server without passing your rules. This is the rule we recommend for get_activities:
{
"version": "1",
"default": "deny",
"tools": {
"get_activities": {}
}
}get_activities is read-only, so it stays allowed — but everything else on the server is denied unless you say otherwise.
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get_activities. It is categorised as a Read tool in the Garmin MCP Server MCP Server, which means it retrieves data without modifying state.
Register the Garmin MCP Server MCP server in PolicyLayer and add a rule for get_activities: 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 MCP Server. Nothing to install.
get_activities 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_activities 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_activities. 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_activities is provided by the Garmin MCP Server MCP server (taxuspt/garmin_mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
Deterministic rules across all 126 Garmin MCP Server tools. Per-identity grants. Full audit log. Live in minutes. Nothing to install.
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126 Garmin MCP Server tools catalogued and risk-classified — across an index of 42,500+ MCP servers.