create_cluster · OCI MCP Server MCP: Risk & Policy

WHAT IT DOES

What create_cluster does on OCI MCP Server

AI agents use create_cluster 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_cluster needs a policy

This tool creates a new Kubernetes cluster in Oracle Cloud Infrastructure. While this is a write operation (reversible through deletion), it has significant blast radius: provisioning a cluster consumes cloud resources, incurs costs, and creates a new compute environment that could be misconfigured or exploited if an agent misuses it without proper constraints.

From the tool's definition Tool name is 'create_cluster' and description states 'Create an OKE cluster', indicating creation of a new Oracle Kubernetes Engine cluster resource. The word 'Create' directly signals a write operation that produces a new infrastructure resource.

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

create_cluster Rate-limited

create_cluster 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_cluster": {
      "limits": [
        {
          "counter": "create_cluster_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 OCI MCP Server, so you can run agents against it safely.

FAQ

Questions about create_cluster

What does the create_cluster tool do? +

Create an OKE cluster (basic; node pool added separately). 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_cluster? +

Register the OCI MCP Server MCP server in PolicyLayer and add a rule for create_cluster: 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_cluster? +

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

Can I rate-limit create_cluster? +

Yes. Add a rate_limit block to the create_cluster 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_cluster completely? +

Set action: deny in the PolicyLayer policy for create_cluster. 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_cluster? +

create_cluster 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.