Get daily activity data for a date range. Returns activity summaries including steps, calories, active time, and goal progress for each day in the range.
AI agents call get_daily_activity_range to retrieve information from Polar 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 data (daily activity metrics) without side effects. It is a read-only query operation on personal health/fitness data. While the data is personal and sensitive, the tool itself performs no actions that modify, execute code, delete, or create financial obligations.
From the tool's definition Tool name 'get_daily_activity_range' and description explicitly states it 'returns activity summaries' with no modification or deletion. Operations are: retrieve steps, calories, active time, and goal progress data.
Attacks that exploit this kind of access
Get daily activity data for a date range. Returns activity summaries including steps, calories, active time, and goal progress for each day in the range. It is categorised as a Read tool in the Polar MCP Server MCP Server, which means it retrieves data without modifying state.
Register the Polar MCP Server MCP server in PolicyLayer and add a rule for get_daily_activity_range: 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 Polar MCP Server. Nothing to install.
get_daily_activity_range 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_activity_range 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_activity_range. 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_activity_range is provided by the Polar MCP Server MCP server (nelsonnew/polar-mcp-server). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
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