Get SpO2 (blood oxygen) data
AI agents call get_spo2_data to retrieve information from Garmin 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 personal health data (blood oxygen readings) from Garmin Connect. While the data is sensitive personal health information, the tool itself performs no destructive, financial, or state-changing operations. It is purely a data retrieval function with minimal blast radius if misused by an AI agent—the worst case being unauthorized access to the user's health metrics, not data loss or financial harm.
From the tool's definition Tool name 'get_spo2_data' and description 'Get SpO2 (blood oxygen) data' indicate a retrieval operation with no modification or side effects. The verb 'get' and the passive data retrieval nature confirm this is a read-only query of existing health metrics.
Attacks that exploit this kind of access
Get SpO2 (blood oxygen) data. It is categorised as a Read tool in the Garmin MCP Server MCP Server, which means it retrieves data without modifying state.
Register the Garmin MCP Server MCP server in PolicyLayer and add a rule for get_spo2_data: 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 MCP Server. Nothing to install.
get_spo2_data 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_spo2_data 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_spo2_data. 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_spo2_data is provided by the Garmin MCP Server MCP server (shubhaankar-sharma/garmin-mcp-railway). 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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