sm_cron_operations · Systems Manager MCP: Risk & Policy

WHAT IT DOES

What sm_cron_operations does on Systems Manager

AI agents invoke sm_cron_operations to trigger actions in Systems Manager. What it does depends on the arguments the agent supplies, and its effects often reach beyond the immediate call — builds kicked off, notifications sent, workflows started.

WHY IT NEEDS A POLICY

Why sm_cron_operations needs a policy

Cron job management involves creating, modifying, or deleting scheduled commands that execute automatically on remote hosts. This can trigger arbitrary code execution at scheduled intervals, making it an Execute-category tool with high severity due to potential for persistent, recurring unauthorized command execution across managed systems.

From the tool's definition 'Operations for cron jobs' — manages scheduled task execution on the system

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

sm_cron_operations Rate-limited

sm_cron_operations stays usable, but rate-capped — a runaway agent can't fire it dozens of times a minute. Everything else on the server is denied unless you say otherwise.

View as policy code

policy.json

{
  "version": "1",
  "default": "deny",
  "tools": {
    "sm_cron_operations": {
      "limits": [
        {
          "counter": "sm_cron_operations_rate",
          "window": "minute",
          "max": 10,
          "scope": "grant"
        }
      ]
    }
  }
}

RATE-LIMIT THIS TOOL →

Instant setup, no code required.

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

FAQ

Questions about sm_cron_operations

What does the sm_cron_operations tool do? +

Operations for cron jobs. It is categorised as a Execute tool in the Systems Manager MCP Server, which means it can trigger actions or run processes. Use rate limits and argument validation.

How do I enforce a policy on sm_cron_operations? +

Register the Systems Manager MCP server in PolicyLayer and add a rule for sm_cron_operations: 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 Systems Manager. Nothing to install.

What risk level is sm_cron_operations? +

sm_cron_operations is a Execute tool with high risk. Execute tools should be rate-limited and have argument validation enabled.

Can I rate-limit sm_cron_operations? +

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

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

sm_cron_operations is provided by the Systems Manager MCP server (knuckles-team/systems-manager). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.