windows_usn_journal
AI agents call windows_usn_journal 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.
The USN Journal is a system log file that records filesystem changes. Reading it is a passive forensic operation with no side effects—it queries existing data without modifying, executing code, deleting, or moving money. Despite the empty description lowering confidence slightly, the name and context (Velociraptor is a forensics platform) clearly indicate this retrieves forensic evidence.
From the tool's definition Tool name 'windows_usn_journal' refers to reading the USN Journal (Update Sequence Number Journal), a Windows filesystem change log that records file modifications.
Attacks that exploit this kind of access
windows_usn_journal. 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_usn_journal: 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_usn_journal 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_usn_journal 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_usn_journal. 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_usn_journal 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.
Teams ship this data inside their own products. See what a licence covers →