One-shot device health: battery + storage + memory + WiFi + CPU + processes.
AI agents call device_health to retrieve information from Android MCP Server without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
This tool queries and retrieves system status information without side effects. It gathers read-only diagnostic data about device state (battery percentage, storage usage, memory status, network connectivity, CPU metrics, running processes). This is a pure information-retrieval operation characteristic of the Read category. No destructive, write, execute, or financial operations are involved.
From the tool's definition Tool description indicates 'One-shot device health' retrieval of diagnostic metrics: battery, storage, memory, WiFi, CPU, and processes. No modification, deletion, execution, or financial operations are described.
Attacks that exploit this kind of access
One-shot device health: battery + storage + memory + WiFi + CPU + processes. It is categorised as a Read tool in the Android MCP Server MCP Server, which means it retrieves data without modifying state.
Register the Android MCP Server MCP server in PolicyLayer and add a rule for device_health: 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 Android MCP Server. Nothing to install.
device_health 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 device_health 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 device_health. 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.
device_health is provided by the Android MCP Server MCP server (wujie272/android-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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