list_directory_contents
AI agents call list_directory_contents to retrieve information from MCP4Modal Sandbox without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
Directory listing is a pure query operation that retrieves metadata about files and directories without modifying or executing anything. It has no side effects and minimal blast radius if misused by an agent—worst case being information disclosure about sandbox contents. The empty description reduces confidence slightly, but the naming convention and context of sibling tools clearly indicate a read-only operation.
From the tool's definition Tool name 'list_directory_contents' indicates a directory listing operation. Sibling tools include 'read_file_content_from_sandbox', 'push_file_to_sandbox', 'pull_file_from_sandbox' (read/write operations) and 'execute_command', 'remove_path',…
Attacks that exploit this kind of access
list_directory_contents. It is categorised as a Read tool in the MCP4Modal Sandbox MCP Server, which means it retrieves data without modifying state.
Register the MCP4Modal Sandbox MCP server in PolicyLayer and add a rule for list_directory_contents: 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 MCP4Modal Sandbox. Nothing to install.
list_directory_contents 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_directory_contents 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_directory_contents. 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_directory_contents is provided by the MCP4Modal Sandbox MCP server (milkymap/mcp4modal_sandbox). 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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