vm_agent_set_password

Set a user password inside a VM via the guest agent.

SERVERProxmox MCP Server SOURCEgethosthewalrus/proxmox-mcp

High RISK CLASS

Category Execute

Parameters 00 required

Recommended Rate-limitedsee the rule below

Registry record Grade F, identity unverified Pull the record →

This record as markdown: /tools/gethosthewalrus-proxmox-mcp/vm-agent-set-password.md

WHAT IT DOES

What vm_agent_set_password does on Proxmox MCP Server

AI agents invoke vm_agent_set_password to trigger actions in Proxmox MCP Server. What it does depends on the arguments the agent supplies, and its effects often reach beyond the immediate call: builds kicked off, notifications sent, workflows started.

RISK

Why vm_agent_set_password is rated High

This tool executes an operation inside a running VM through the guest agent to modify a user's password. While it writes data (changes a password), the action is executed remotely inside a VM via an agent, making it Execute. It has high severity because compromising credentials inside a VM could allow privilege escalation, unauthorized access, or account takeover within the guest OS.

From the tool's definition Set a user password inside a VM via the guest agent

Attacks that exploit this kind of access

RECOMMENDED RULE

The rule that runs vm_agent_set_password 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 vm_agent_set_password, this is the rule to start with:

vm_agent_set_password Rate-limited

vm_agent_set_password stays usable, but rate-capped: a runaway agent can't fire it dozens of times a minute. Everything else on the server is denied unless you say otherwise.

View as policy code

policy.json

{
  "version": "1",
  "default": "deny",
  "tools": {
    "vm_agent_set_password": {
      "limits": [
        {
          "counter": "vm_agent_set_password_rate",
          "window": "minute",
          "max": 10,
          "scope": "grant"
        }
      ]
    }
  }
}

RATE-LIMIT THIS TOOL → Instant setup, no code required.

The button opens the PolicyLayer dashboard: create your workspace, connect Proxmox MCP Server, apply this rule, and every vm_agent_set_password call is checked against it from then on.

FAQ

Questions about vm_agent_set_password

What does the vm_agent_set_password tool do? +

Set a user password inside a VM via the guest agent. It is categorised as a Execute tool in the Proxmox MCP Server MCP Server, which means it can trigger actions or run processes. Use rate limits and argument validation.

How do I enforce a policy on vm_agent_set_password? +

Register the Proxmox MCP Server MCP server in PolicyLayer and add a rule for vm_agent_set_password: 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.

What risk level is vm_agent_set_password? +

vm_agent_set_password is a Execute tool with high risk. Execute tools should be rate-limited and have argument validation enabled.

Can I rate-limit vm_agent_set_password? +

Yes. Add a rate_limit block to the vm_agent_set_password 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.

How do I block vm_agent_set_password completely? +

Set action: deny in the PolicyLayer policy for vm_agent_set_password. 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.

What MCP server provides vm_agent_set_password? +

vm_agent_set_password 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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