List all disks and partitions using diskutil list.
AI agents call diskutil_list 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 retrieves disk and partition information with no side effects. It is a read-only query operation that gathers system diagnostics. The potential for misuse is minimal—an agent could learn disk layout but cannot modify, delete, or execute operations on disks. Severity is low because the information disclosed (disk names, sizes, mount points) is generally non-sensitive system metadata.
From the tool's definition Tool name 'diskutil_list' and description 'List all disks and partitions' indicate a query operation. Server description emphasizes 'read-only access' and 'retrieve system information'. The diskutil list command returns disk inventory without modification.
Attacks that exploit this kind of access
List all disks and partitions using diskutil list. 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 diskutil_list: 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.
diskutil_list 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 diskutil_list 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 diskutil_list. 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.
diskutil_list 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.
diskutil_list is one line of macOS Tools MCP Server's registry record.
The record carries the whole server: verified identity, auth posture, risk grade, every tool classified, recommended policy — re-checked continuously.
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