crontab_create

A write tool on the Aapanel MCP server.

SERVERAapanel SOURCEnipunanirmal/aapanel-mcp

Medium RISK CLASS

Category Write

Parameters 00 required

Recommended Rate-limitedsee the rule below

Registry record Grade F, identity unverified Pull the record →

This record as markdown: /tools/aapanel-mcp/crontab-create.md

WHAT IT DOES

What crontab_create does on Aapanel

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

RISK

Why crontab_create is rated Medium

Creating crontab entries modifies system configuration reversibly—cron jobs can be edited or removed later. This is a Write category action, not Destructive. However, the severity is high because malicious cron jobs could execute arbitrary code on a schedule, providing persistent command execution capabilities to an attacker. An AI agent misusing this tool could establish backdoors or automated attacks.

From the tool's definition Tool name 'crontab_create' directly indicates creation of cron job entries. While the description is empty, the name unambiguously denotes a write operation that adds scheduled tasks to the system.

Attacks that exploit this kind of access

RECOMMENDED RULE

The rule that runs crontab_create safely

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

crontab_create Rate-limited

crontab_create 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": {
    "crontab_create": {
      "limits": [
        {
          "counter": "crontab_create_rate",
          "window": "minute",
          "max": 30,
          "scope": "grant"
        }
      ]
    }
  }
}

LIMIT THIS TOOL → Instant setup, no code required.

The button opens the PolicyLayer dashboard: create your workspace, connect Aapanel, apply this rule, and every crontab_create call is checked against it from then on.

FAQ

Questions about crontab_create

What does the crontab_create tool do? +

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

How do I enforce a policy on crontab_create? +

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

What risk level is crontab_create? +

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

Can I rate-limit crontab_create? +

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

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

crontab_create is provided by the Aapanel MCP server (nipunanirmal/aapanel-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.

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