Get rest mode period data when user has enabled rest mode
AI agents call get_rest_mode_periods to retrieve information from Oura Ring 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 health metric data from the Oura Ring API without creating, modifying, deleting, or executing any operations. It has no side effects and presents minimal risk—at worst, an agent could access personal health data it shouldn't, but cannot alter system state or cause irreversible harm. Classified as Read with low severity.
From the tool's definition Tool name 'get_rest_mode_periods' and description 'Get rest mode period data' indicate a read/retrieval operation with no modification or execution capability.
Attacks that exploit this kind of access
Get rest mode period data when user has enabled rest mode. It is categorised as a Read tool in the Oura Ring MCP Server MCP Server, which means it retrieves data without modifying state.
Register the Oura Ring MCP Server MCP server in PolicyLayer and add a rule for get_rest_mode_periods: 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 Oura Ring MCP Server. Nothing to install.
get_rest_mode_periods 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_rest_mode_periods 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_rest_mode_periods. 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_rest_mode_periods is provided by the Oura Ring MCP Server MCP server (jameslouie/oura-ring-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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