AI agents call virtualization-mcp_list_tools to retrieve information from Virtualization without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
This is a simple informational tool that returns metadata about available tools. It performs a passive read operation with no capability to modify system state, execute code, or affect virtual machines. The blast radius if misused is minimal—an AI agent listing tools cannot cause harm beyond information disclosure.
From the tool's definition Tool name 'list_tools' and description 'List all available tools' indicate a query/retrieval operation with no side effects. It enumerates available capabilities without modifying, executing, or deleting anything.
Documented attack patterns abuse exactly the kind of access virtualization-mcp_list_tools gives an agent:
PolicyLayer is an MCP gateway — it sits between your AI agents and Virtualization, and nothing reaches the server without passing your rules. This is the rule we recommend for virtualization-mcp_list_tools:
{
"version": "1",
"default": "deny",
"tools": {
"virtualization-mcp_list_tools": {}
}
}virtualization-mcp_list_tools is read-only, so it stays allowed — but everything else on the server is denied unless you say otherwise.
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List all available tools. It is categorised as a Read tool in the Virtualization MCP Server, which means it retrieves data without modifying state.
Register the Virtualization MCP server in PolicyLayer and add a rule for virtualization-mcp_list_tools: 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 Virtualization. Nothing to install.
virtualization-mcp_list_tools 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 virtualization-mcp_list_tools 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 virtualization-mcp_list_tools. 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.
virtualization-mcp_list_tools is provided by the Virtualization MCP server (sandraschi/virtualization-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
Start from Virtualization, add the rest of your stack, and see everything your agents can call. Then put policy on all of it.
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56 Virtualization tools catalogued and risk-classified — across an index of 43,000+ MCP servers.