This record as markdown: /tools/gethosthewalrus-proxmox-mcp/delete-user.md
What delete_user does on Proxmox MCP Server
AI agents call delete_user to permanently remove resources in Proxmox MCP Server, typically in cleanup and lifecycle workflows. It does its job in a single call, and there is no undo.
Why delete_user is rated Critical
User deletion is a destructive action that cannot be undone—it removes access credentials, permissions, and potentially user-associated data permanently. This has a high blast radius in a Proxmox infrastructure context, as malicious deletion could lock out administrators or revoke access for legitimate users. However, it does not involve financial transactions, making it 'high' rather than 'critical' severity.
From the tool's definition Tool name 'delete_user' and description 'Delete a user' explicitly indicate irreversible deletion of a user account from the Proxmox system.
Attacks that exploit this kind of access
The rule that runs delete_user safely
PolicyLayer is an MCP gateway: it sits between your AI agents and Proxmox MCP Server, and checks every tool call against a rule you set before the call runs. Nothing changes on the server itself. For delete_user, this is the rule to start with:
delete_user is removed from the agent's tool list entirely, so the agent never calls it. The rest of the server keeps working.
The button opens the PolicyLayer dashboard: create your workspace, connect Proxmox MCP Server, apply this rule, and every delete_user call is checked against it from then on.
Questions about delete_user
Delete a user. It is categorised as a Destructive tool in the Proxmox MCP Server MCP Server, which means it can permanently delete or destroy data. Block by default and require explicit approval.
Register the Proxmox MCP Server MCP server in PolicyLayer and add a rule for delete_user: 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 Proxmox MCP Server. Nothing to install.
delete_user is a Destructive tool with critical risk. Critical-risk tools should be blocked by default and only enabled with explicit human approval.
Yes. Add a rate_limit block to the delete_user 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 delete_user. 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.
delete_user is provided by the Proxmox MCP Server MCP server (gethosthewalrus/proxmox-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
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