List common Unix commands available on the system.
AI agents call list_common_commands to retrieve information from Unix Manual Server without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
This is a read-only operation that enumerates or queries information about available Unix commands. It has no side effects, does not execute commands, and does not modify or delete data. The action is purely informational retrieval, fitting the Read category with low severity since the blast radius of misuse is limited to exposure of command names that are typically public knowledge on Unix systems.
From the tool's definition Tool name 'list_common_commands' and description 'List common Unix commands available on the system' indicate this retrieves or queries available commands without modifying any system state.
Attacks that exploit this kind of access
List common Unix commands available on the system. It is categorised as a Read tool in the Unix Manual Server MCP Server, which means it retrieves data without modifying state.
Register the Unix Manual Server MCP server in PolicyLayer and add a rule for list_common_commands: 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 Unix Manual Server. Nothing to install.
list_common_commands 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 list_common_commands 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 list_common_commands. 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.
list_common_commands is provided by the Unix Manual Server MCP server (tizee/mcp-unix-manual). 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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