AI agents call list_networks to retrieve information from Defined without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
This tool queries and returns information about networks without creating, modifying, deleting, or executing operations. It is a straightforward data retrieval function, the lowest-risk category.
From the tool's definition Tool name 'list_networks' and description 'List networks' indicate a retrieval operation with no side effects.
Attacks that exploit this kind of access
List networks. It is categorised as a Read tool in the Defined MCP Server, which means it retrieves data without modifying state.
Register the Defined MCP server in PolicyLayer and add a rule for list_networks: 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 Defined. Nothing to install.
list_networks 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_networks 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_networks. 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_networks is provided by the Defined MCP server (quickvm/defined-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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