List all access lists (basic auth, IP restrictions)
AI agents call list_access_lists to retrieve information from Nginx Proxy Manager MCP without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
This tool queries and retrieves existing access list configurations (basic auth, IP restrictions) from Nginx Proxy Manager without creating, modifying, or deleting any data. It is a read-only operation with minimal blast radius if misused by an AI agent, as it only exposes configuration data that may already be visible to authenticated users.
From the tool's definition Tool name is 'list_access_lists' and description states 'List all access lists' - a retrieval operation with no modification or side effects.
Attacks that exploit this kind of access
List all access lists (basic auth, IP restrictions). It is categorised as a Read tool in the Nginx Proxy Manager MCP MCP Server, which means it retrieves data without modifying state.
Register the Nginx Proxy Manager MCP server in PolicyLayer and add a rule for list_access_lists: 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.
list_access_lists is a Read tool with low risk. Read-only tools are generally safe to allow by default.
Yes. Add a rate_limit block to the list_access_lists 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 list_access_lists. 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.
list_access_lists 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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