assign_subscription | PolicyLayer

WHAT IT DOES

What assign_subscription does on HPE Aruba Networking Central MCP Server

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

WHY IT NEEDS A POLICY

Why assign_subscription needs a policy

This tool assigns subscriptions or licenses to devices, which is a reversible write operation (licenses can typically be unassigned or reassigned). While it touches licensing which has financial implications, it does not directly move money or commit financial obligations — it manages already-purchased subscription assignments. Misuse could waste license seats or lock devices out of features, hence medium severity.

From the tool's definition Assign subscription/license to devices

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

assign_subscription Rate-limited

assign_subscription 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": {
    "assign_subscription": {
      "limits": [
        {
          "counter": "assign_subscription_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 HPE Aruba Networking Central MCP Server, so you can run agents against it safely.

FAQ

Questions about assign_subscription

What does the assign_subscription tool do? +

Assign subscription/license to devices. It is categorised as a Write tool in the HPE Aruba Networking Central 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 assign_subscription? +

Register the HPE Aruba Networking Central MCP Server MCP server in PolicyLayer and add a rule for assign_subscription: 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 HPE Aruba Networking Central MCP Server. Nothing to install.

What risk level is assign_subscription? +

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

Can I rate-limit assign_subscription? +

Yes. Add a rate_limit block to the assign_subscription 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 assign_subscription completely? +

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

assign_subscription is provided by the HPE Aruba Networking Central MCP Server MCP server (the-otner/aruba-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.