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create_vm_backup

Create a backup of a Proxmox VM to safeguard data. Specify node, VM ID, and storage, with options for mode, compression, and pruning.

Instructions

Create a backup of a VM

Input Schema

TableJSON Schema
NameRequiredDescriptionDefault
modeNoBackup mode (stop, suspend, or snapshot)
nodeYesNode where VM is located
vmidYesVM ID to backup
pauseNoPause VM during backup
pruneNoPrune old backups
stdoutNoOutput backup to stdout
dumpdirNoBackup directory
excludeNoExclude disks (comma-separated, e.g., 'sata0,sata1')
storageYesStorage name for the backup
backupIdNoBackup ID
backupdirNoBackup directory
compressionNoCompression algorithm
Behavior1/5

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

With no annotations, the description must carry the full burden, but it merely states the obvious action. It does not disclose whether the VM is affected (e.g., snapshot vs shutdown), how the backup is stored, or any side effects, despite the schema hinting at modes and compression.

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

Conciseness3/5

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

The description is extremely short and free of fluff, but for a tool with 12 parameters it is under-specified. It lacks any structured breakdown; while concise, it is not appropriately sized for the tool's complexity.

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

Completeness1/5

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

The tool has 12 parameters, no output schema, and no annotations. The description provides only the bare minimum, omitting return values, behavioral nuances, and any cautionary notes, making it grossly incomplete for an agent to invoke correctly.

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 coverage is 100%, so the baseline is 3. The description adds no parameter context beyond what the schema already provides, so there is no additional value.

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 'Create a backup of a VM' clearly specifies the action (create) and resource (backup of a VM). It distinguishes from sibling tools like create_container_backup and restore_vm_backup by explicitly targeting VM backups.

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 usage context or alternatives are provided. The one-sentence description gives no indication of when to use this tool versus create_container_backup or delete_backup, nor any preconditions or exclusions.

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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