create_cron · Ploi MCP Server MCP: Risk & Policy

WHAT IT DOES

What create_cron does on Ploi MCP Server

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

WHY IT NEEDS A POLICY

Why create_cron needs a policy

Creating a cron job is a reversible write operation (it can be deleted later). However, it does schedule recurring execution of commands on the server, which has moderate blast radius if misused — a malicious or misconfigured cron could cause harm, but the act of creation itself is a Write, not Execute or Destructive.

From the tool's definition create_cron - creates a cron job on a server

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

create_cron Rate-limited

create_cron 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": {
    "create_cron": {
      "limits": [
        {
          "counter": "create_cron_rate",
          "window": "minute",
          "max": 30,
          "scope": "grant"
        }
      ]
    }
  }
}

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

FAQ

Questions about create_cron

What does the create_cron tool do? +

Create a cron job on a server, e.g. the Laravel scheduler. It is categorised as a Write tool in the Ploi 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 create_cron? +

Register the Ploi MCP Server MCP server in PolicyLayer and add a rule for create_cron: 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 Ploi MCP Server. Nothing to install.

What risk level is create_cron? +

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

Can I rate-limit create_cron? +

Yes. Add a rate_limit block to the create_cron 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_cron completely? +

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

create_cron is provided by the Ploi MCP Server MCP server (sudanese/ploi-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.