provision_vm · Morpheus MCP Server MCP: Risk & Policy

WHAT IT DOES

What provision_vm does on Morpheus MCP Server

AI agents invoke provision_vm to trigger actions in Morpheus MCP Server. What it does depends on the arguments the agent supplies, and its effects often reach beyond the immediate call — builds kicked off, notifications sent, workflows started.

WHY IT NEEDS A POLICY

Why provision_vm needs a policy

Provisioning a VM involves allocating cloud infrastructure resources, which is an external operation with significant blast radius (cost, resource consumption, security exposure). The description is empty, so confidence is reduced, but the name and server context strongly indicate resource provisioning.

From the tool's definition Tool name 'provision_vm' on a server that 'enables users to provision resources' via 'Morpheus API calls'

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

provision_vm Rate-limited

provision_vm stays usable, but rate-capped — a runaway agent can't fire it dozens of times a minute. Everything else on the server is denied unless you say otherwise.

View as policy code

policy.json

{
  "version": "1",
  "default": "deny",
  "tools": {
    "provision_vm": {
      "limits": [
        {
          "counter": "provision_vm_rate",
          "window": "minute",
          "max": 10,
          "scope": "grant"
        }
      ]
    }
  }
}

RATE-LIMIT THIS TOOL →

Instant setup, no code required.

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

FAQ

Questions about provision_vm

What does the provision_vm tool do? +

provision_vm. It is categorised as a Execute tool in the Morpheus MCP Server MCP Server, which means it can trigger actions or run processes. Use rate limits and argument validation.

How do I enforce a policy on provision_vm? +

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

What risk level is provision_vm? +

provision_vm is a Execute tool with high risk. Execute tools should be rate-limited and have argument validation enabled.

Can I rate-limit provision_vm? +

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

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

provision_vm is provided by the Morpheus MCP Server MCP server (nixndme/morpheus-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.