disable_passenger_app

THE RISK

High Risk

Why disable_passenger_app needs a policy

This tool stops a running Passenger application, which is an operational state change that affects a live service. It triggers an external operation (stopping a web application) rather than merely reading or writing data. While potentially reversible (the app could be re-enabled), stopping a production application can cause service outages, making it high severity.

From the tool's definition Disable/stop a registered application

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

POLICY

How to control disable_passenger_app

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

policy.json

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

disable_passenger_app 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.

Create a free account and register cPanel MCP Server — nothing to install.
Add this policy — paste it, or build it visually.
Point your MCP client (Claude, Cursor, anything) at your gateway URL.

RATE-LIMIT THIS TOOL →

Free to start. No card required.

EXPLORE

Related tools and policies

More cPanel MCP Server tools

Destructive clear_spam_box Clear all messages from the SpamAssassin spam box Destructive deauthorize_ssh_key Deauthorize an SSH key (revoke login access) Destructive delete_addon_domain Delete an addon domain Destructive delete_autoresponder Delete an email autoresponder Destructive delete_cron_job Delete a cron job Destructive delete_dns_record Delete a DNS zone record by line number Destructive delete_email_account Delete an email account Destructive delete_email_filter Delete an email filter

All 164 cPanel MCP Server tools →

Execute tools on other servers

Android Forensics ADB MCP Server adb_shell_command EMBA-MCP run_emba_scan Frida Game Hacking MCP remove_breakpoint Procmon request_elevation

Go deeper

High-risk tools in cPanel MCP Server → Every high-risk tool this server exposes, in one view.
All high-risk MCP tools → Every high-risk tool across the catalogue, and the policy pattern that contains them.
The MCP Attack Database → Documented attack patterns against MCP deployments — and the policies that stop them.
Agent sandbox → Bounding what an agent can execute and where the boundary should sit.
Least privilege for MCP → Granting agents the minimum tool surface the task needs.
Rate Limiting MCP Tool Calls: A Practical Guide →
MCP Security: Why Prompt Guardrails Aren't Enough →

FAQ

Questions about disable_passenger_app

What does the disable_passenger_app tool do? +

Disable/stop a registered application. It is categorised as a Execute tool in the cPanel MCP Server MCP Server, which means it can trigger actions or run processes. Use rate limits and argument validation.

How do I enforce a policy on disable_passenger_app? +

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

What risk level is disable_passenger_app? +

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

Can I rate-limit disable_passenger_app? +

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

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

disable_passenger_app is provided by the cPanel MCP Server MCP server (0xhayd3n/cpanel-mcp-server). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.

Enforce policy on every cPanel MCP Server tool call.

Start from cPanel MCP Server, add the rest of your stack, and see everything your agents can call. Then put policy on all of it.

CHECK YOUR STACK →