set_default_script · Verda Cloud MCP Server MCP

WHAT IT DOES

What set_default_script does on Verda Cloud MCP Server

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

WHY IT NEEDS A POLICY

Why set_default_script needs a policy

This tool modifies system configuration (the default startup script) in a reversible manner. While it doesn't delete or execute code directly, setting a default script that runs on all new instances represents a significant configuration change with potential blast radius if a malicious or incorrect script is set as default.

From the tool's definition Tool description states 'Set an existing script as the default for new Verda Cloud instances' — this modifies configuration state that will affect future instance deployments.

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

set_default_script Rate-limited

set_default_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.

View as policy code

policy.json

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

LIMIT THIS TOOL →

Instant setup, no code required.

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

FAQ

Questions about set_default_script

What does the set_default_script tool do? +

Set an existing script as the default for new Verda Cloud instances. It is categorised as a Write tool in the Verda Cloud MCP Server MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.

How do I enforce a policy on set_default_script? +

Register the Verda Cloud MCP Server MCP server in PolicyLayer and add a rule for set_default_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 Verda Cloud MCP Server. Nothing to install.

What risk level is set_default_script? +

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

Can I rate-limit set_default_script? +

Yes. Add a rate_limit block to the set_default_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 set_default_script completely? +

Set action: deny in the PolicyLayer policy for set_default_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 set_default_script? +

set_default_script is provided by the Verda Cloud MCP Server MCP server (sniper35/verda-cloud-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.