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migrate_vm

Migrate a virtual machine from one node to another within the Proxmox cluster. Supports live migration and transfer of local disks.

Instructions

Migrate a VM to another node in the cluster.

Args: node: The source node. vmid: The VM ID. target: Target node name. online: Live migration (True) or offline (False). with_local_disks: Migrate local disks as well. targetstorage: Target storage mapping for migration (e.g. 'local-lvm').

Input Schema

TableJSON Schema
NameRequiredDescriptionDefault
nodeYes
vmidYes
targetYes
onlineNo
with_local_disksNo
targetstorageNo

Output Schema

TableJSON Schema
NameRequiredDescriptionDefault
resultYes
Behavior2/5

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

No annotations are provided, and the description fails to disclose behavioral traits such as potential downtime, state changes, or network impact. The parameter listing does not cover side effects or operational constraints.

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

Conciseness5/5

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

The description is concise: one sentence followed by a clean parameter list. No unnecessary words, front-loaded with the core action.

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?

Despite having an output schema (context signal), the description does not mention the return value or behavior (e.g., task ID). For a potentially disruptive operation like migration, prerequisites and outcomes are omitted, leaving the agent underinformed.

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 0%, and the description adds brief explanations for all 6 parameters (e.g., 'online: Live migration (True) or offline (False)'). However, explanations lack detail (e.g., targetstorage format) and do not fully compensate for the missing schema descriptions.

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 'Migrate a VM to another node in the cluster.' It uses a specific verb and resource, distinguishing it from sibling tools like migrate_container and migrate_ha_resource.

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?

No explicit guidance is given on when to use this tool (e.g., prerequisites, when to choose live vs offline migration). It does not mention alternatives or conditions, leaving the agent to infer usage from the parameter list alone.

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

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