create_vcn · OCI MCP Server MCP: Risk & Policy

WHAT IT DOES

What create_vcn does on OCI MCP Server

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

WHY IT NEEDS A POLICY

Why create_vcn needs a policy

Creating a VCN is a reversible Write operation that modifies cloud infrastructure state. It has high severity because VCNs are critical networking resources whose creation can enable unauthorized network architectures, but it is not Destructive (reversible via deletion) nor Financial (no direct monetary impact).

From the tool's definition Tool name 'create_vcn' and description 'Create a VCN' indicate creation of a Virtual Cloud Network resource in OCI. VCNs are foundational networking infrastructure.

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

create_vcn Rate-limited

create_vcn 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_vcn": {
      "limits": [
        {
          "counter": "create_vcn_rate",
          "window": "minute",
          "max": 30,
          "scope": "grant"
        }
      ]
    }
  }
}

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Instant setup, no code required.

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

FAQ

Questions about create_vcn

What does the create_vcn tool do? +

Create a VCN. It is categorised as a Write tool in the OCI MCP Server 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_vcn? +

Register the OCI MCP Server MCP server in PolicyLayer and add a rule for create_vcn: 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 OCI MCP Server. Nothing to install.

What risk level is create_vcn? +

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

Can I rate-limit create_vcn? +

Yes. Add a rate_limit block to the create_vcn 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_vcn completely? +

Set action: deny in the PolicyLayer policy for create_vcn. 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_vcn? +

create_vcn is provided by the OCI MCP Server MCP server (sarthak-pansare/oci-mcp-server). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.