deauthorize_ssh_key

THE RISK

Critical Risk

Why deauthorize_ssh_key needs a policy

Revoking an SSH key permanently removes access credentials, which is an irreversible action that cannot be undone without re-authorizing the key. This could lock out legitimate users or automated systems from SSH access, making it a destructive operation with high blast radius if misused.

From the tool's definition Deauthorize an SSH key (revoke login access)

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

POLICY

How to control deauthorize_ssh_key

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 deauthorize_ssh_key:

policy.json

{
  "version": "1",
  "default": "deny",
  "hide": [
    "deauthorize_ssh_key"
  ]
}

deauthorize_ssh_key disappears from the agent's tool list entirely, and any attempt to call it is denied. The rest of the server keeps working.

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.

RESTRICT THIS TOOL →

Free to start. No card required.

EXPLORE

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All 164 cPanel MCP Server tools →

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Go deeper

Critical-risk tools in cPanel MCP Server → Every critical-risk tool this server exposes, in one view.
All critical-risk MCP tools → Every critical-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.
Blast radius → How much damage one compromised or confused agent can do — and how to bound it.
Tool call approval → Approval gates on individual tool calls: auto-allow, prompt, or deny.
Rate Limiting MCP Tool Calls: A Practical Guide →
MCP Security: Why Prompt Guardrails Aren't Enough →

FAQ

Questions about deauthorize_ssh_key

What does the deauthorize_ssh_key tool do? +

Deauthorize an SSH key (revoke login access). 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.

How do I enforce a policy on deauthorize_ssh_key? +

Register the cPanel MCP Server MCP server in PolicyLayer and add a rule for deauthorize_ssh_key: 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 deauthorize_ssh_key? +

deauthorize_ssh_key is a Destructive tool with critical risk. Critical-risk tools should be blocked by default and only enabled with explicit human approval.

Can I rate-limit deauthorize_ssh_key? +

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

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

deauthorize_ssh_key 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 →