reboot_vultr_instance · Cloud Manage MCP Server MCP

WHAT IT DOES

What reboot_vultr_instance does on Cloud Manage MCP Server

AI agents invoke reboot_vultr_instance to trigger actions in Cloud Manage 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.

WHY IT NEEDS A POLICY

Why reboot_vultr_instance needs a policy

Rebooting a cloud instance is an Execute-category action: it triggers an external operation (power cycle) on a live Vultr server. While not permanently destructive, misuse can cause service outages and downtime for any workloads running on the instance. The description notes triple confirmation is required, indicating the authors recognize the high risk. Severity is high due to potential service disruption.

From the tool's definition reboot_vultr_instance — 'reboot' indicates restarting a running cloud instance, which triggers an external infrastructure operation (power cycle) on a live server

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

reboot_vultr_instance Rate-limited

reboot_vultr_instance 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": {
    "reboot_vultr_instance": {
      "limits": [
        {
          "counter": "reboot_vultr_instance_rate",
          "window": "minute",
          "max": 10,
          "scope": "grant"
        }
      ]
    }
  }
}

RATE-LIMIT THIS TOOL →

Instant setup, no code required.

PolicyLayer is an MCP gateway: every tool call is checked against your rule before it reaches Cloud Manage MCP Server, so you can run agents against it safely.

FAQ

Questions about reboot_vultr_instance

What does the reboot_vultr_instance tool do? +

重启Vultr实例（需要三次确认）. It is categorised as a Execute tool in the Cloud Manage 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 reboot_vultr_instance? +

Register the Cloud Manage MCP Server MCP server in PolicyLayer and add a rule for reboot_vultr_instance: 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 Cloud Manage MCP Server. Nothing to install.

What risk level is reboot_vultr_instance? +

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

Can I rate-limit reboot_vultr_instance? +

Yes. Add a rate_limit block to the reboot_vultr_instance 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 reboot_vultr_instance completely? +

Set action: deny in the PolicyLayer policy for reboot_vultr_instance. 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 reboot_vultr_instance? +

reboot_vultr_instance is provided by the Cloud Manage MCP Server MCP server (rainhan99/cloud_manage_mcp_server). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.