Show current battery information reported by pmset -g batt.
AI agents call battery_status to retrieve information from macOS Tools MCP Server without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
This tool merely queries and returns battery status information from macOS without side effects. It aligns with the Read category as it retrieves data with no capability to modify, delete, or execute operations. The blast radius of misuse is minimal—an agent could only obtain battery status telemetry, which is non-sensitive system metadata. Severity is low due to the benign nature of battery information exposure.
From the tool's definition Tool description explicitly states 'Show current battery information' using `pmset -g batt`, a read-only system diagnostic command. Server description emphasizes 'read-only access' and 'retrieve system information and diagnostics'.
Attacks that exploit this kind of access
Show current battery information reported by pmset -g batt. It is categorised as a Read tool in the macOS Tools MCP Server MCP Server, which means it retrieves data without modifying state.
Register the macOS Tools MCP Server MCP server in PolicyLayer and add a rule for battery_status: 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 macOS Tools MCP Server. Nothing to install.
battery_status 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 battery_status 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 battery_status. 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.
battery_status is provided by the macOS Tools MCP Server MCP server (zhuoli/mcp101). 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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