Nutanix MCP Server

by jkmills

Overview Schema Source Related Servers Discussions Admin

Python

Remote

create_vm

Create a new virtual machine by providing a name, cluster UUID, and optional vCPU, memory, and disk specifications.

Instructions

Create a new virtual machine. Requires name, cluster UUID, and basic specs.

Tool call template

Replace each placeholder with a value matching the input schema. Only required parameters are included; add optional parameters as needed.

{
  "id": 1,
  "jsonrpc": "2.0",
  "method": "tools/call",
  "params": {
    "arguments": {
      "name": "<name>",
      "cluster_uuid": "<cluster_uuid>"
    },
    "name": "create_vm"
  }
}

Input Schema

Name	Required	Description
`name`	Yes	Name for the new VM
`cluster_uuid`	Yes	UUID of the cluster to create the VM on
`num_vcpus`	No	Number of vCPUs (default: 2)
`memory_mb`	No	Memory in MB (default: 4096)
`disk_size_gb`	No	Boot disk size in GB (default: 40)

Schema Changelog

Changes observed during successful MCP inspections.

First observedv0.1.0May 7, 2026

TDQS

B3.1/5.0

Behavior2/5

Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?

No annotations exist, so the description carries full burden. It states 'Create' (a mutation) but does not disclose permissions, side effects, or what happens on success/failure. It lacks behavioral details beyond the obvious creation action.

Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.

Conciseness4/5

Is the description appropriately sized, front-loaded, and free of redundancy?

The description is a single sentence that is concise and front-loads the purpose. However, it could be slightly improved by noting optional parameters, but it remains efficient.

Shorter descriptions cost fewer tokens and are easier for agents to parse. Every sentence should earn its place.

Completeness2/5

Given the tool's complexity, does the description cover enough for an agent to succeed on first attempt?

Given the tool creates a resource with 5 parameters and no output schema, the description is too sparse. It does not explain return values, prerequisites (e.g., valid cluster UUID), or post-creation behavior, leaving gaps for an AI agent.

Complex tools with many parameters or behaviors need more documentation. Simple tools need less. This dimension scales expectations accordingly.

Parameters3/5

Does the description clarify parameter syntax, constraints, interactions, or defaults beyond what the schema provides?

Schema description coverage is 100%, so the schema documents each parameter thoroughly. The description adds minimal value by repeating 'name, cluster UUID, and basic specs' but does not clarify relationships or constraints beyond what the schema provides.

Input schemas describe structure but not intent. Descriptions should explain non-obvious parameter relationships and valid value ranges.

Purpose5/5

Does the description clearly state what the tool does and how it differs from similar tools?

The description clearly states the action ('Create') and the resource ('virtual machine'), and lists required parameters ('name, cluster UUID, and basic specs'). It effectively distinguishes this tool from sibling tools like get_vm and list_vms, which are read-only.

Agents choose between tools based on descriptions. A clear purpose with a specific verb and resource helps agents select the right tool.

Usage Guidelines2/5

Does the description explain when to use this tool, when not to, or what alternatives exist?

The description provides no guidance on when to use this tool versus alternatives (e.g., when to use power_on_vm instead). It does not mention prerequisites or contexts where creation is appropriate or not.

Agents often have multiple tools that could apply. Explicit usage guidance like "use X instead of Y when Z" prevents misuse.