Delete an SSH key
AI agents call delete_ssh_key to permanently remove resources in Hcloud — typically in cleanup and lifecycle workflows. It does its job in a single call, and there is no undo.
This tool permanently removes an SSH key from the Hetzner Cloud infrastructure. SSH keys are critical authentication credentials; deletion cannot be undone and would break access to any servers relying on that key. This is an irreversible destructive action affecting system access control.
From the tool's definition Tool name and description: 'delete_ssh_key' with description 'Delete an SSH key'. The verb 'Delete' indicates irreversible removal of data.
Attacks that exploit this kind of access
Delete an SSH key. It is categorised as a Destructive tool in the Hcloud MCP Server, which means it can permanently delete or destroy data. Block by default and require explicit approval.
Register the Hcloud MCP server in PolicyLayer and add a rule for delete_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 Hcloud. Nothing to install.
delete_ssh_key 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 delete_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.
Set action: deny in the PolicyLayer policy for delete_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.
delete_ssh_key is provided by the Hcloud MCP server (xodus-co/hcloud-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
delete_ssh_key is one line of Hcloud's registry record.
The record carries the whole server: verified identity, auth posture, risk grade, every tool classified, recommended policy — re-checked continuously.
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