AI agents call get_disk_usage to retrieve information from Allcanuse without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
The tool appears to query disk usage information without modifying, executing, or deleting anything. This is a passive data retrieval operation. Severity is low because disk usage information is generally non-sensitive system metadata. Confidence is reduced slightly (0.85 instead of higher) due to the empty description, which prevents confirmation of potential side effects or unusual behavior.
From the tool's definition Tool name 'get_disk_usage' indicates retrieval of disk usage statistics. No description provided, but the naming convention and context on a system management server suggest a read-only query operation.
Documented attack patterns abuse exactly the kind of access get_disk_usage gives an agent:
PolicyLayer is an MCP gateway — it sits between your AI agents and Allcanuse, and nothing reaches the server without passing your rules. This is the rule we recommend for get_disk_usage:
{
"version": "1",
"default": "deny",
"tools": {
"get_disk_usage": {}
}
}get_disk_usage is read-only, so it stays allowed — but everything else on the server is denied unless you say otherwise.
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get_disk_usage. It is categorised as a Read tool in the Allcanuse MCP Server, which means it retrieves data without modifying state.
Register the Allcanuse MCP server in PolicyLayer and add a rule for get_disk_usage: 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 Allcanuse. Nothing to install.
get_disk_usage 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 get_disk_usage 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 get_disk_usage. 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.
get_disk_usage is provided by the Allcanuse MCP server (ra1nyxin/allcanuse-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
Start from Allcanuse, add the rest of your stack, and see everything your agents can call. Then put policy on all of it.
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130 Allcanuse tools catalogued and risk-classified — across an index of 43,000+ MCP servers.