List all Moleculer nodes
AI agents call moleculer_list_nodes to retrieve information from Moleculer 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 operation to enumerate nodes in the Moleculer cluster. It retrieves data about the microservice infrastructure but does not create, modify, delete, or execute any operations. The blast radius is minimal as it only exposes metadata about the system topology.
From the tool's definition Tool name 'moleculer_list_nodes' and description 'List all Moleculer nodes' indicate a query operation that retrieves information about available nodes without modifying state or triggering side effects.
Attacks that exploit this kind of access
List all Moleculer nodes. It is categorised as a Read tool in the Moleculer MCP Server MCP Server, which means it retrieves data without modifying state.
Register the Moleculer MCP Server MCP server in PolicyLayer and add a rule for moleculer_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 Moleculer MCP Server. Nothing to install.
moleculer_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 moleculer_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 moleculer_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.
moleculer_list_nodes is provided by the Moleculer MCP Server MCP server (moleculerjs/mcp-server). 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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