Delete an ACL rule
AI agents call unifi_delete_acl_rule to permanently remove resources in UniFi Network MCP Server — typically in cleanup and lifecycle workflows. It does its job in a single call, and there is no undo.
Deletion of ACL rules is irreversible and can cause immediate network access disruptions. An AI agent deleting critical firewall rules could block legitimate traffic or inadvertently expose network segments. This meets the Destructive category definition as it irreversibly removes data/configurations that cannot be undone without manual intervention.
From the tool's definition Tool name explicitly states 'delete' and description confirms 'Delete an ACL rule'. ACL rules are network access control configurations that, once deleted, cannot be automatically recovered without manual reconfiguration.
Attacks that exploit this kind of access
Delete an ACL rule. It is categorised as a Destructive tool in the UniFi Network MCP Server MCP Server, which means it can permanently delete or destroy data. Block by default and require explicit approval.
Register the UniFi Network MCP Server MCP server in PolicyLayer and add a rule for unifi_delete_acl_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 UniFi Network MCP Server. Nothing to install.
unifi_delete_acl_rule 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 unifi_delete_acl_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.
Set action: deny in the PolicyLayer policy for unifi_delete_acl_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.
unifi_delete_acl_rule is provided by the UniFi Network MCP Server MCP server (ruashots/unifi-network-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
Every MCP server has a record like this.
Type a name, get the same breakdown: verified identity, auth posture, risk grade, capabilities, recommended policy.
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