List running processes on a Linux host. Args: client_id: The Velociraptor client ID. org_id: Optional Velociraptor org ID for multi-tenant deployments. ProcessRegex: Case-insensitive regex to filter process names. Fields: Comma-separated string of fields to return. Returns: Process list as a stri...
AI agents call linux_pslist to retrieve information from Velociraptor MCP without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
This is a read operation that queries system state without side effects. It retrieves process information for forensic analysis purposes. While the severity is marked 'medium' rather than 'low' because process listings can reveal sensitive information about system operations and security posture that could be abused if an LLM misuses filtering parameters to identify and exfiltrate information about specific…
From the tool's definition Tool 'linux_pslist' retrieves and lists running processes on a Linux host with optional filtering by regex and field selection.
Documented attack patterns abuse exactly the kind of access linux_pslist gives an agent:
PolicyLayer is an MCP gateway — it sits between your AI agents and Velociraptor MCP, and nothing reaches the server without passing your rules. This is the rule we recommend for linux_pslist:
{
"version": "1",
"default": "deny",
"tools": {
"linux_pslist": {}
}
}linux_pslist is read-only, so it stays allowed — but everything else on the server is denied unless you say otherwise.
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List running processes on a Linux host. Args: client_id: The Velociraptor client ID. org_id: Optional Velociraptor org ID for multi-tenant deployments. ProcessRegex: Case-insensitive regex to filter process names. Fields: Comma-separated string of fields to return. Returns: Process list as a string or error message. It is categorised as a Read tool in the Velociraptor MCP MCP Server, which means it retrieves data without modifying state.
Register the Velociraptor MCP server in PolicyLayer and add a rule for linux_pslist: 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. Nothing to install.
linux_pslist 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 linux_pslist 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 linux_pslist. 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.
linux_pslist is provided by the Velociraptor MCP server (mgreen27/mcp-velociraptor). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
Start from Velociraptor MCP, add the rest of your stack, and see everything your agents can call. Then put policy on all of it.
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28 Velociraptor MCP tools catalogued and risk-classified — across an index of 43,000+ MCP servers.