AI agents call list_addon_domains to retrieve information from cPanel MCP Server without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
This tool performs a simple query/list operation to retrieve existing addon domain information. It retrieves data without modifying, deleting, executing code, or creating financial obligations. The blast radius of misuse is minimal—an unauthorized agent could enumerate domain configuration but cannot alter infrastructure or access data beyond domain names.
From the tool's definition Tool name 'list_addon_domains' and description 'List all addon domains' indicates a data retrieval operation with no side effects.
Documented attack patterns abuse exactly the kind of access list_addon_domains gives an agent:
PolicyLayer is an MCP gateway — it sits between your AI agents and cPanel MCP Server, and nothing reaches the server without passing your rules. This is the rule we recommend for list_addon_domains:
{
"version": "1",
"default": "deny",
"tools": {
"list_addon_domains": {}
}
}list_addon_domains is read-only, so it stays allowed — but everything else on the server is denied unless you say otherwise.
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List all addon domains. It is categorised as a Read tool in the cPanel MCP Server MCP Server, which means it retrieves data without modifying state.
Register the cPanel MCP Server MCP server in PolicyLayer and add a rule for list_addon_domains: 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 cPanel MCP Server. Nothing to install.
list_addon_domains 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_addon_domains 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_addon_domains. 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_addon_domains is provided by the cPanel MCP Server MCP server (0xhayd3n/cpanel-mcp-server). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
Start from cPanel MCP Server, add the rest of your stack, and see everything your agents can call. Then put policy on all of it.
Free to start. No card required.
164 cPanel MCP Server tools catalogued and risk-classified — across an index of 43,000+ MCP servers.