get_activities_by_date
AI agents call get_activities_by_date 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.
This tool retrieves activity data filtered by date without modifying, deleting, or executing external operations. It follows the naming and functional pattern of other read-only query tools on the server. The empty description is a limitation, but the name and context strongly indicate a read operation with no side effects.
From the tool's definition Tool name 'get_activities_by_date' indicates data retrieval. Server context shows fitness/health data exposure (activities, steps, heart rate, sleep, body composition).
Attacks that exploit this kind of access
get_activities_by_date. 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_by_date: 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_by_date 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_by_date 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_by_date. 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_by_date is provided by the Garmin MCP Server MCP server (jbaker48/garmin-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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