List all available node definitions in CML
AI agents call list_node_definitions to retrieve information from Claude-Modeling-Labs MCP Server without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
This is a straightforward read operation that queries available node definitions in Cisco Modeling Labs. It has no side effects, does not execute code or commands, does not modify data, and does not involve financial transactions. The blast radius of misuse is minimal—an attacker could only discover what node types are available in CML, which is informational and cannot harm the lab environment.
From the tool's definition Tool name 'list_node_definitions' and description 'List all available node definitions in CML' indicate a query/listing operation that retrieves information about available node types without modifying any state.
Attacks that exploit this kind of access
List all available node definitions in CML. It is categorised as a Read tool in the Claude-Modeling-Labs MCP Server MCP Server, which means it retrieves data without modifying state.
Register the Claude-Modeling-Labs MCP Server MCP server in PolicyLayer and add a rule for list_node_definitions: 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 Claude-Modeling-Labs MCP Server. Nothing to install.
list_node_definitions 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_definitions 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_definitions. 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_definitions is provided by the Claude-Modeling-Labs MCP Server MCP server (mediocretriumph/claude-cml-toolkit). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
list_node_definitions is one line of Claude-Modeling-Labs MCP Server's registry record.
The record carries the whole server: verified identity, auth posture, risk grade, every tool classified, recommended policy — re-checked continuously.
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