AI agents call list_node_templates to retrieve information from EVE-NG 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 read-only retrieval of node template information from EVE-NG. It has no side effects, cannot modify infrastructure, and poses minimal risk if called by an AI agent. The blast radius is limited to information disclosure of what templates exist, which is non-sensitive operational metadata.
From the tool's definition 'List available node templates' is a query operation that retrieves existing template metadata without modifying, executing, or deleting anything.
Documented attack patterns abuse exactly the kind of access list_node_templates gives an agent:
PolicyLayer is an MCP gateway — it sits between your AI agents and EVE-NG MCP Server, and nothing reaches the server without passing your rules. This is the rule we recommend for list_node_templates:
{
"version": "1",
"default": "deny",
"tools": {
"list_node_templates": {}
}
}list_node_templates is read-only, so it stays allowed — but everything else on the server is denied unless you say otherwise.
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List available node templates in EVE-NG. It is categorised as a Read tool in the EVE-NG MCP Server MCP Server, which means it retrieves data without modifying state.
Register the EVE-NG MCP Server MCP server in PolicyLayer and add a rule for list_node_templates: 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 EVE-NG MCP Server. Nothing to install.
list_node_templates 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_node_templates 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_node_templates. 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_node_templates is provided by the EVE-NG MCP Server MCP server (moimran/eveng-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
Start from EVE-NG MCP Server, add the rest of your stack, and see everything your agents can call. Then put policy on all of it.
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26 EVE-NG MCP Server tools catalogued and risk-classified — across an index of 43,000+ MCP servers.