Delete an access list by ID
AI agents call delete_access_list to permanently remove resources in Nginx Proxy Manager MCP — typically in cleanup and lifecycle workflows. It does its job in a single call, and there is no undo.
This tool permanently removes access control configurations that cannot be automatically restored. While not directly impacting production traffic like delete_proxy_host, deletion of access lists removes security controls that may be protecting sensitive proxy hosts. The blast radius is high if an agent deletes access lists that are actively enforcing access restrictions, potentially exposing proxy infrastructure.
From the tool's definition delete_access_list - irreversibly deletes an access control list by ID. The 'delete' verb combined with access list management indicates permanent removal of configuration that controls access to proxy hosts.
Attacks that exploit this kind of access
Delete an access list by ID. It is categorised as a Destructive tool in the Nginx Proxy Manager MCP MCP Server, which means it can permanently delete or destroy data. Block by default and require explicit approval.
Register the Nginx Proxy Manager MCP server in PolicyLayer and add a rule for delete_access_list: 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 Nginx Proxy Manager MCP. Nothing to install.
delete_access_list 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_access_list 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_access_list. 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_access_list is provided by the Nginx Proxy Manager MCP server (verybigsad/nginx-proxy-manager-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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