AI agents call get_battery_level to retrieve information from PhonePi MCP without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
This tool only reads and returns information about the device's battery status. It performs no write, delete, execute, or financial operations. The information retrieved is non-sensitive device telemetry with minimal security impact if exposed to an AI agent.
From the tool's definition Tool name is 'get_battery_level' and description states 'Get the current battery level of the phone' — a pure query operation that retrieves device status without modification or side effects.
Documented attack patterns abuse exactly the kind of access get_battery_level gives an agent:
PolicyLayer is an MCP gateway — it sits between your AI agents and PhonePi MCP, and nothing reaches the server without passing your rules. This is the rule we recommend for get_battery_level:
{
"version": "1",
"default": "deny",
"tools": {
"get_battery_level": {}
}
}get_battery_level is read-only, so it stays allowed — but everything else on the server is denied unless you say otherwise.
Free to start. No card required.
Get the current battery level of the phone. It is categorised as a Read tool in the PhonePi MCP MCP Server, which means it retrieves data without modifying state.
Register the PhonePi MCP server in PolicyLayer and add a rule for get_battery_level: 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 PhonePi MCP. Nothing to install.
get_battery_level 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_battery_level 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_battery_level. 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_battery_level is provided by the PhonePi MCP server (priyankark/phonepi-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
Deterministic rules across all 22 PhonePi MCP tools. Per-identity grants. Full audit log. Live in minutes. Nothing to install.
Free to start. No card required.
22 PhonePi MCP tools catalogued and risk-classified — across an index of 42,500+ MCP servers.