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pdm_pve_qemu_snapshot_rollback

Roll back a VM to a snapshot on a PDM-registered remote, with automatic safety snapshot and dry-run planning by default.

Instructions

MUTATION: roll a VM back to a snapshot on a PDM-registered remote (through PDM).

For a container use pdm_pve_lxc_snapshot_rollback; to roll back without PDM use pve_rollback. DESTRUCTIVE (discards current state). Takes an auto safety-snapshot first (fail-closed: no snapshot, no rollback) and returns its name as safety_snapshot — the handle to undo this rollback. Dry-run by default (PLAN); confirm=True submits and returns the Proxmox task UPID.

Input Schema

TableJSON Schema
NameRequiredDescriptionDefault
vmidYesNumeric VMID of the target VM, as a string.
remoteYesPDM-registered remote (Proxmox cluster) hosting the VM.
confirmNoFalse (default) returns a PLAN only; True runs it.
snapnameYesName of the snapshot to roll back to.
proximo_targetNoWhich configured Proxmox target to run this call against — a target name from your multi-target config (a specific PVE/PBS/PMG/PDM box). Omit to use the single/default target from the environment; the selection applies only to this call.

Output Schema

TableJSON Schema
NameRequiredDescriptionDefault
resultYes
Behavior5/5

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

Declares MUTATION and DESTRUCTIVE with current state discard. Describes auto safety-snapshot, fail-closed safety, dry-run (PLAN) vs confirm, and return values (safety_snapshot, UPID). No contradictions since annotations are absent.

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?

Concise, front-loaded purpose, then alternatives, then behavioral details. Every sentence is informative with no redundancy.

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

Completeness5/5

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

Covers mutation nature, destructiveness, safety mechanism, dry-run, confirm, and return values. Adequate given output schema exists. Distinguishes from siblings comprehensively.

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

Parameters4/5

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

Schema coverage is 100%, baseline 3. Description adds value by explaining effect of confirm parameter (PLAN vs run) and return values, enriching understanding beyond schema.

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?

Clearly states the verb 'roll back', resource 'VM on PDM', and context. Explicitly distinguishes from siblings for containers (pdm_pve_lxc_snapshot_rollback) and non-PDM (pve_rollback).

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

Usage Guidelines5/5

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

Provides explicit when-to-use: for VMs through PDM, and alternatives for containers or without PDM. Also explains dry-run default and confirm=True for execution.

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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