nodegroup_list_nodes
AI agents call nodegroup_list_nodes to retrieve information from GreenNode MCP Server without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
The tool performs a read-only operation to retrieve or enumerate nodes in a node group. It has no side effects, does not execute commands, modify resources, or trigger external operations. Despite the empty description, the semantic meaning of 'list' clearly maps to Read category.
From the tool's definition Tool name 'nodegroup_list_nodes' indicates a listing/retrieval operation with the verb 'list' and noun 'nodes'.
Attacks that exploit this kind of access
nodegroup_list_nodes. It is categorised as a Read tool in the GreenNode MCP Server MCP Server, which means it retrieves data without modifying state.
Register the GreenNode MCP Server MCP server in PolicyLayer and add a rule for nodegroup_list_nodes: 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 GreenNode MCP Server. Nothing to install.
nodegroup_list_nodes 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 nodegroup_list_nodes 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 nodegroup_list_nodes. 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.
nodegroup_list_nodes is provided by the GreenNode MCP Server MCP server (vngcloud/greennode-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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