Get detailed activity samples including step counts and activity zone data throughout the day. Returns intraday activity breakdown.
AI agents call get_activity_samples 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 fitness data (activity samples, step counts, activity zones) from the Polar AccessLink API without any side effects. It is a straightforward read operation that queries existing data.
From the tool's definition Tool name 'get_activity_samples' and description 'Get detailed activity samples... Returns intraday activity breakdown' indicate data retrieval only. No modification, deletion, execution, or financial operations are described.
Attacks that exploit this kind of access
Get detailed activity samples including step counts and activity zone data throughout the day. Returns intraday activity breakdown. 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_activity_samples: 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_activity_samples 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_activity_samples 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_activity_samples. 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_activity_samples 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.
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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