search_health_records_ch
AI agents call search_health_records_ch 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.
Health records are sensitive personal data. While this appears to be a read-only query tool with no side effects (no modification, deletion, or external actions), unauthorized access to health records poses privacy and security risks. Severity is medium rather than high because the tool itself performs read operations without destructive or financial impact, but the data sensitivity elevates it above low.
From the tool's definition Tool name contains 'search_health_records' which indicates data retrieval. Sibling tools like 'get_health_summary_*', 'get_statistics_by_type_*', and 'get_trend_data_*' are clearly read-only query operations on Apple Health data.
Attacks that exploit this kind of access
search_health_records_ch. 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 search_health_records_ch: 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.
search_health_records_ch 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 search_health_records_ch 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 search_health_records_ch. 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.
search_health_records_ch 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.