AI agents call kill_ftp_session to permanently remove resources in cPanel MCP Server — typically in cleanup and lifecycle workflows. It does its job in a single call, and there is no undo.
Killing/terminating an active session is an irreversible action — the session cannot be restored once ended. This disrupts an ongoing connection, which classifies it as Destructive. Severity is medium as it affects a single active FTP session but could interrupt file transfers or operations in progress.
From the tool's definition Terminate an active FTP session
Documented attack patterns abuse exactly the kind of access kill_ftp_session gives an agent:
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 kill_ftp_session:
{
"version": "1",
"default": "deny",
"hide": [
"kill_ftp_session"
]
} kill_ftp_session disappears from the agent's tool list entirely, and any attempt to call it is denied. The rest of the server keeps working.
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Terminate an active FTP session. It is categorised as a Destructive tool in the cPanel MCP Server MCP Server, which means it can permanently delete or destroy data. Block by default and require explicit approval.
Register the cPanel MCP Server MCP server in PolicyLayer and add a rule for kill_ftp_session: 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.
kill_ftp_session is a Destructive tool with critical risk. Critical-risk tools should be blocked by default and only enabled with explicit human approval.
Yes. Add a rate_limit block to the kill_ftp_session 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.
Set action: deny in the PolicyLayer policy for kill_ftp_session. 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.
kill_ftp_session 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.
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.
Free to start. No card required.
164 cPanel MCP Server tools catalogued and risk-classified — across an index of 43,000+ MCP servers.