Show directory structure as a tree.
AI agents call list_directory_tree to retrieve information from Claude File Management Server without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
This tool performs a query/retrieval operation on the filesystem to display directory contents in a tree format. It has no side effects, cannot modify data, execute code, or delete files. The blast radius of misuse is minimal—worst case an agent could map out directory structures, which is informational only.
From the tool's definition Tool name is 'list_directory_tree' and description states 'Show directory structure as a tree.' This is a read-only operation that retrieves and displays information about directory structure without modifying, executing, or deleting anything.
Attacks that exploit this kind of access
Show directory structure as a tree. It is categorised as a Read tool in the Claude File Management Server MCP Server, which means it retrieves data without modifying state.
Register the Claude File Management Server MCP server in PolicyLayer and add a rule for list_directory_tree: 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 Claude File Management Server. Nothing to install.
list_directory_tree 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_tree 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_tree. 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_tree is provided by the Claude File Management Server MCP server (vipin1000/mcp). 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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