cluster_versions_list
AI agents call cluster_versions_list 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.
This tool retrieves available cluster versions without modifying or deleting infrastructure. It is a read-only query operation with minimal blast radius if misused by an AI agent. The absence of a description lowers confidence slightly, but the naming convention and context of sibling tools (which include clearly destructive operations like cluster_delete) suggest this is a safe informational query.
From the tool's definition Tool name 'cluster_versions_list' indicates a listing/query operation. The description is empty, but the name pattern matches standard read operations like 'get', 'list', or 'fetch' observed in sibling tools. No side effects are apparent from the name.
Attacks that exploit this kind of access
cluster_versions_list. 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 cluster_versions_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 GreenNode MCP Server. Nothing to install.
cluster_versions_list 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 cluster_versions_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 cluster_versions_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.
cluster_versions_list 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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