Medium Risk

create_common_startup_script

create_common_startup_script

How to control create_common_startup_script ↓

What create_common_startup_script does on Vultr MCP

AI agents use create_common_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.

Medium Risk

Why create_common_startup_script needs a policy

The tool creates a startup script, which is a reversible Write operation that generates and stores new configuration data. While startup scripts can influence system behavior when executed, the tool itself only creates/stores the script definition. No code is executed, deleted, or financial operations occur at creation time.

From the tool's definition Tool name 'create_common_startup_script' explicitly indicates creation of a startup script, which would be stored as a new configuration artifact in the Vultr infrastructure.

Documented attack patterns abuse exactly the kind of access create_common_startup_script gives an agent:

How to control create_common_startup_script

PolicyLayer is an MCP gateway — it sits between your AI agents and Vultr MCP, and nothing reaches the server without passing your rules. This is the rule we recommend for create_common_startup_script:

policy.json
{
  "version": "1",
  "default": "deny",
  "tools": {
    "create_common_startup_script": {
      "limits": [
        {
          "counter": "create_common_startup_script_rate",
          "window": "minute",
          "max": 30,
          "scope": "grant"
        }
      ]
    }
  }
}

create_common_startup_script stays usable, but capped — an agent stuck in a loop can't make hundreds of changes a minute. Everything else on the server is denied unless you say otherwise.

  1. Create a free account and register Vultr MCP — nothing to install.
  2. Add this policy — paste it, or build it visually.
  3. Point your MCP client (Claude, Cursor, anything) at your gateway URL.
LIMIT THIS TOOL →

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Related tools and policies

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Questions about create_common_startup_script

What does the create_common_startup_script tool do? +

create_common_startup_script. It is categorised as a Write tool in the Vultr MCP MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.

How do I enforce a policy on create_common_startup_script? +

Register the Vultr MCP server in PolicyLayer and add a rule for create_common_startup_script: 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 Vultr MCP. Nothing to install.

What risk level is create_common_startup_script? +

create_common_startup_script is a Write tool with medium risk. Write tools should be rate-limited to prevent accidental bulk modifications.

Can I rate-limit create_common_startup_script? +

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

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

create_common_startup_script is provided by the Vultr MCP server (rsp2k/mcp-vultr). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.

Enforce policy on every Vultr MCP tool call.

Start from Vultr 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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284 Vultr MCP tools catalogued and risk-classified — across an index of 43,000+ MCP servers.

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