List files in a remote directory
AI agents call cloudsync_list_directory to retrieve information from Truenas 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/list operation on remote cloud storage, retrieving information about files and directories. It has no side effects, does not execute code, does not modify or delete data, and does not involve financial transactions. It falls squarely into the Read category with low severity due to minimal blast radius if misused by an AI agent.
From the tool's definition Tool name 'cloudsync_list_directory' and description 'List files in a remote directory' indicate a read-only operation that retrieves directory contents without modifying or deleting data.
Documented attack patterns abuse exactly the kind of access cloudsync_list_directory gives an agent:
PolicyLayer is an MCP gateway — it sits between your AI agents and Truenas, and nothing reaches the server without passing your rules. This is the rule we recommend for cloudsync_list_directory:
{
"version": "1",
"default": "deny",
"tools": {
"cloudsync_list_directory": {}
}
}cloudsync_list_directory is read-only, so it stays allowed — but everything else on the server is denied unless you say otherwise.
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List files in a remote directory. It is categorised as a Read tool in the Truenas MCP Server, which means it retrieves data without modifying state.
Register the Truenas MCP server in PolicyLayer and add a rule for cloudsync_list_directory: 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 Truenas. Nothing to install.
cloudsync_list_directory 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 cloudsync_list_directory 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 cloudsync_list_directory. 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.
cloudsync_list_directory is provided by the Truenas MCP server (spranab/truenas-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
Start from Truenas, add the rest of your stack, and see everything your agents can call. Then put policy on all of it.
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279 Truenas tools catalogued and risk-classified — across an index of 43,000+ MCP servers.