create_network · Defined MCP: Risk & Policy

WHAT IT DOES

What create_network does on Defined

AI agents use create_network to create or update resources in Defined — usually the action step of a workflow, after the agent has gathered context. Every call changes real data in your Defined environment.

WHY IT NEEDS A POLICY

Why create_network needs a policy

Creating a network is a reversible write operation that adds a new resource to the infrastructure. While it modifies system state and could have broad implications (since networks are foundational to network administration), it is not inherently destructive (networks can be deleted) and does not execute arbitrary code or move money.

From the tool's definition Tool name is 'create_network' and description states 'Create a network.' This is a network creation operation that modifies infrastructure state by adding a new network resource to the Defined Networking system.

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

create_network Rate-limited

create_network stays usable, but capped — an agent stuck in a loop can't make hundreds of changes a minute. Everything else on the server is denied unless you say otherwise.

View as policy code

policy.json

{
  "version": "1",
  "default": "deny",
  "tools": {
    "create_network": {
      "limits": [
        {
          "counter": "create_network_rate",
          "window": "minute",
          "max": 30,
          "scope": "grant"
        }
      ]
    }
  }
}

LIMIT THIS TOOL →

Instant setup, no code required.

PolicyLayer is an MCP gateway: every tool call is checked against your rule before it reaches Defined, so you can run agents against it safely.

FAQ

Questions about create_network

What does the create_network tool do? +

Create a network. It is categorised as a Write tool in the Defined MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.

How do I enforce a policy on create_network? +

Register the Defined MCP server in PolicyLayer and add a rule for create_network: 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.

What risk level is create_network? +

create_network is a Write tool with medium risk. Write tools should be rate-limited to prevent accidental bulk modifications.

Can I rate-limit create_network? +

Yes. Add a rate_limit block to the create_network 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.

How do I block create_network completely? +

Set action: deny in the PolicyLayer policy for create_network. 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.

What MCP server provides create_network? +

create_network 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.