update_startup_script

What update_startup_script does on Vultr MCP

AI agents use update_startup_script to create or update resources in Vultr MCP, usually the action step of a workflow, after the agent has gathered context. Every call changes real data in your Vultr MCP environment.

Why update_startup_script is rated Medium

Startup scripts execute arbitrary code at instance initialization. Modifying them could alter system behavior, install malicious software, or compromise instance security. However, since updates are reversible (old versions can be restored), this is Write rather than Execute or Destructive. High severity due to the wide-ranging implications of startup script changes across potentially many instances. Confidence is 0.

From the tool's definition Tool name 'update_startup_script' indicates modification of startup scripts, which are configuration files that execute when instances boot. The verb 'update' confirms reversible modification rather than deletion.

The rule that runs update_startup_script safely

PolicyLayer is an MCP gateway: it sits between your AI agents and Vultr MCP, and checks every tool call against a rule you set before the call runs. Nothing changes on the server itself. For update_startup_script, this is the rule to start with:

{
  "version": "1",
  "default": "deny",
  "tools": {
    "update_startup_script": {
      "limits": [
        {
          "counter": "update_startup_script_rate",
          "window": "minute",
          "max": 30,
          "scope": "grant"
        }
      ]
    }
  }
}

Questions about update_startup_script