AI agents call get_disk_usage to retrieve information from Mcp Wsl Exec without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
This tool queries disk space metrics, which is a read-only operation with no side effects. It does not execute commands, modify data, delete files, or trigger external operations. Despite being on a command execution server, this specific tool is limited to retrieving and reporting disk usage statistics.
From the tool's definition Tool name 'get_disk_usage' and description 'Get disk space information' indicate a query operation that retrieves system information without modification or execution of commands.
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 Mcp Wsl Exec, 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 space information. It is categorised as a Read tool in the Mcp Wsl Exec MCP Server, which means it retrieves data without modifying state.
Register the Mcp Wsl Exec 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 Mcp Wsl Exec. 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 Mcp Wsl Exec MCP server (spences10/mcp-wsl-exec). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
Start from Mcp Wsl Exec, add the rest of your stack, and see everything your agents can call. Then put policy on all of it.
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7 Mcp Wsl Exec tools catalogued and risk-classified — across an index of 43,000+ MCP servers.