AI agents call get_body_measurement to retrieve information from Hevy without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
This tool retrieves historical body measurement data for a specified date. It performs a query operation with no capability to modify, delete, or execute operations. The data returned is personal fitness information, but access is limited to read-only retrieval, making this a standard Read category tool with low severity.
From the tool's definition Tool name is 'get_body_measurement' and description states 'Get body measurement entry for a specific date'. The verb 'Get' and the retrieval-focused description indicate data retrieval with no side effects.
Attacks that exploit this kind of access
Get body measurement entry for a specific date (YYYY-MM-DD). It is categorised as a Read tool in the Hevy MCP Server, which means it retrieves data without modifying state.
Register the Hevy MCP server in PolicyLayer and add a rule for get_body_measurement: 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 Hevy. Nothing to install.
get_body_measurement 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_body_measurement 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_body_measurement. 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_body_measurement is provided by the Hevy MCP server (srdjancodes/hevy-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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