delete_cluster_firewall_rule

Delete a cluster-level firewall rule.

SERVERProxmox MCP Server SOURCEgethosthewalrus/proxmox-mcp

Critical RISK CLASS

Category Destructive

Parameters 00 required

Recommended Hiddensee the rule below

Registry record Grade F, identity unverified Pull the record →

This record as markdown: /tools/gethosthewalrus-proxmox-mcp/delete-cluster-firewall-rule.md

WHAT IT DOES

What delete_cluster_firewall_rule does on Proxmox MCP Server

AI agents call delete_cluster_firewall_rule to permanently remove resources in Proxmox MCP Server, typically in cleanup and lifecycle workflows. It does its job in a single call, and there is no undo.

RISK

Why delete_cluster_firewall_rule is rated Critical

Deleting cluster firewall rules cannot be undone and directly impacts security posture across the entire Proxmox cluster. Unauthorized deletion could expose the infrastructure to unauthorized access or attack. This is a classic destructive operation affecting security controls.

From the tool's definition Tool name contains 'delete' and description states 'Delete a cluster-level firewall rule' — this irreversibly removes firewall rules that protect infrastructure.

Attacks that exploit this kind of access

RECOMMENDED RULE

The rule that runs delete_cluster_firewall_rule safely

PolicyLayer is an MCP gateway: it sits between your AI agents and Proxmox MCP Server, and checks every tool call against a rule you set before the call runs. Nothing changes on the server itself. For delete_cluster_firewall_rule, this is the rule to start with:

delete_cluster_firewall_rule Hidden

delete_cluster_firewall_rule is removed from the agent's tool list entirely, so the agent never calls it. The rest of the server keeps working.

View as policy code

policy.json

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

RESTRICT THIS TOOL → Instant setup, no code required.

The button opens the PolicyLayer dashboard: create your workspace, connect Proxmox MCP Server, apply this rule, and every delete_cluster_firewall_rule call is checked against it from then on.

FAQ

Questions about delete_cluster_firewall_rule

What does the delete_cluster_firewall_rule tool do? +

Delete a cluster-level firewall rule. It is categorised as a Destructive tool in the Proxmox 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 delete_cluster_firewall_rule? +

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

What risk level is delete_cluster_firewall_rule? +

delete_cluster_firewall_rule 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 delete_cluster_firewall_rule? +

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

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

delete_cluster_firewall_rule is provided by the Proxmox MCP Server MCP server (gethosthewalrus/proxmox-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.

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