list_modules
AI agents call list_modules to retrieve information from PowerShell MCP Server without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
The name 'list_modules' strongly suggests querying/retrieving module information without modification. This is a read-only operation. Severity is medium because module enumeration could reveal system configuration details useful for reconnaissance, but has no direct destructive capability.
From the tool's definition Tool name 'list_modules' with no description provided. Given the server context (PowerShell MCP Server for executing commands and managing modules), this tool most likely lists or enumerates available PowerShell modules, which is a read operation.
Attacks that exploit this kind of access
list_modules. It is categorised as a Read tool in the PowerShell MCP Server MCP Server, which means it retrieves data without modifying state.
Register the PowerShell MCP Server MCP server in PolicyLayer and add a rule for list_modules: 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 PowerShell MCP Server. Nothing to install.
list_modules 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_modules 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_modules. 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_modules is provided by the PowerShell MCP Server MCP server (posidron/mcp-powershell). 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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