AI agents call get_today to retrieve information from Whoop 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 current-day health data from the Whoop API. The verb 'get' and the absence of any modification, deletion, or execution language confirm it is a Read operation. Health data access poses minimal risk even if misused by an AI agent, as it only exposes user wellness information without enabling writes, deletes, or external actions.
From the tool's definition Tool name 'get_today' and description 'Get today' indicate data retrieval with no modification capability.
Documented attack patterns abuse exactly the kind of access get_today gives an agent:
PolicyLayer is an MCP gateway — it sits between your AI agents and Whoop MCP Server, and nothing reaches the server without passing your rules. This is the rule we recommend for get_today:
{
"version": "1",
"default": "deny",
"tools": {
"get_today": {}
}
}get_today is read-only, so it stays allowed — but everything else on the server is denied unless you say otherwise.
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Get today. It is categorised as a Read tool in the Whoop MCP Server MCP Server, which means it retrieves data without modifying state.
Register the Whoop MCP Server MCP server in PolicyLayer and add a rule for get_today: 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 Whoop MCP Server. Nothing to install.
get_today 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_today 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_today. 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_today is provided by the Whoop MCP Server MCP server (yuridivonis/whoop-mcp-server). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
Start from Whoop MCP Server, add the rest of your stack, and see everything your agents can call. Then put policy on all of it.
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6 Whoop MCP Server tools catalogued and risk-classified — across an index of 43,000+ MCP servers.