Get a recursive tree view of files and directories in the Unity project as a JSON structure.
AI agents call directory_tree to retrieve information from Unity MCP Integration without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
This tool performs directory traversal and listing without any capability to modify, execute, or delete content. It is purely informational—similar to 'list_directory' which appears in the sibling tools list. The operation has minimal blast radius if misused by an AI agent, as it only exposes the file structure metadata of the Unity project without side effects.
From the tool's definition Tool retrieves a 'recursive tree view of files and directories' as a JSON structure with no modification capability indicated. This is clearly a read-only query operation that returns project structure information.
Documented attack patterns abuse exactly the kind of access directory_tree gives an agent:
PolicyLayer is an MCP gateway — it sits between your AI agents and Unity MCP Integration, and nothing reaches the server without passing your rules. This is the rule we recommend for directory_tree:
{
"version": "1",
"default": "deny",
"tools": {
"directory_tree": {}
}
}directory_tree is read-only, so it stays allowed — but everything else on the server is denied unless you say otherwise.
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Get a recursive tree view of files and directories in the Unity project as a JSON structure. It is categorised as a Read tool in the Unity MCP Integration MCP Server, which means it retrieves data without modifying state.
Register the Unity MCP Integration MCP server in PolicyLayer and add a rule for 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 Unity MCP Integration. Nothing to install.
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 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 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.
directory_tree is provided by the Unity MCP Integration MCP server (quazaai/unitymcpintegration). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
Deterministic rules across all 15 Unity MCP Integration tools. Per-identity grants. Full audit log. Live in minutes. Nothing to install.
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15 Unity MCP Integration tools catalogued and risk-classified — across an index of 42,500+ MCP servers.