Get sleep statistics including average duration and total nights tracked. Optionally filter by date range.
AI agents call get_sleep to retrieve information from Garmin 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 sleep statistics from Garmin health data stored in Supabase. It queries and returns information (average duration, total nights tracked) without side effects, reversibility concerns, or data modification. This is a straightforward read operation typical of health data dashboards.
From the tool's definition Tool name 'get_sleep' and description 'Get sleep statistics' indicate data retrieval only. No mention of modification, deletion, or execution. Parameters allow optional date range filtering for querying existing data.
Attacks that exploit this kind of access
Get sleep statistics including average duration and total nights tracked. Optionally filter by date range. It is categorised as a Read tool in the Garmin Health MCP Server MCP Server, which means it retrieves data without modifying state.
Register the Garmin Health MCP Server MCP server in PolicyLayer and add a rule for get_sleep: 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 Garmin Health MCP Server. Nothing to install.
get_sleep 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_sleep 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_sleep. 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_sleep is provided by the Garmin Health MCP Server MCP server (willc121/garmin-mcp-server). 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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