Collect evidence of mounted mass storage from Registry on a Windows host.
AI agents call windows_mounted_mass_storage_usb to retrieve information from Velociraptor MCP Server without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
This tool performs forensic data collection by querying Windows Registry to enumerate mounted USB devices. It retrieves historical or current mount information without modifying system state, executing code, or causing side effects. Registry queries for artifact collection are standard Read-category operations in forensic contexts.
From the tool's definition Tool collects evidence from Registry on Windows host; 'Collect evidence of mounted mass storage' indicates retrieval and enumeration of existing data (mounted USB devices) with no modification, deletion, or execution of commands.
Attacks that exploit this kind of access
Collect evidence of mounted mass storage from Registry on a Windows host. It is categorised as a Read tool in the Velociraptor MCP Server MCP Server, which means it retrieves data without modifying state.
Register the Velociraptor MCP Server MCP server in PolicyLayer and add a rule for windows_mounted_mass_storage_usb: 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 Velociraptor MCP Server. Nothing to install.
windows_mounted_mass_storage_usb 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 windows_mounted_mass_storage_usb 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 windows_mounted_mass_storage_usb. 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.
windows_mounted_mass_storage_usb is provided by the Velociraptor MCP Server MCP server (snoe-findley/mcp-velociraptor). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
Every MCP server has a record like this.
Type a name, get the same breakdown: verified identity, auth posture, risk grade, capabilities, recommended policy.
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