get_trend_data_es
AI agents call get_trend_data_es to retrieve information from Apple Health 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 trend data from Apple Health records without modifying or deleting information. It is a read-only query operation. Severity is medium rather than low because health data is sensitive personal information; unauthorized access or misuse by an agent could expose private medical trends, patterns, or conditions.
From the tool's definition Tool name 'get_trend_data_es' indicates data retrieval ('get_trend_data'). The tool is part of a health data query suite alongside other read-only tools like 'get_health_summary_es', 'get_statistics_by_type_es', and 'get_xml_by_type'.
Attacks that exploit this kind of access
get_trend_data_es. It is categorised as a Read tool in the Apple Health MCP Server MCP Server, which means it retrieves data without modifying state.
Register the Apple Health MCP Server MCP server in PolicyLayer and add a rule for get_trend_data_es: 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 Apple Health MCP Server. Nothing to install.
get_trend_data_es 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_trend_data_es 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_trend_data_es. 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_trend_data_es is provided by the Apple Health MCP Server MCP server (the-momentum/apple-health-mcp-server). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.