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suspend_guest

Suspend a running virtual machine, optionally saving its memory state to disk for hibernation. Use this to pause a guest and free host resources.

Instructions

Suspend a running VM.

Args: vmid: Guest to suspend. to_disk: Write memory state to disk (hibernate) instead of holding it in RAM.

Input Schema

TableJSON Schema
NameRequiredDescriptionDefault
vmidYes
to_diskNo

Output Schema

TableJSON Schema
NameRequiredDescriptionDefault

No arguments

Behavior3/5

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

Annotations are all false, so the description must disclose behavior. It adds context about to_disk (hibernate vs RAM) but does not mention reversibility, that the VM must be running, or side effects like resource release. This is partial transparency.

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 extremely concise, with a single line plus a compact Args block. Every sentence adds necessary information without redundancy or filler.

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

Completeness4/5

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

For a simple two-parameter tool with an output schema, the description covers the core action and parameters. However, it omits relational context (e.g., it can be undone with resume_guest) and preconditions (VM must be running), which would make it more complete.

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 descriptions are absent (0% coverage), but the description's Args section clearly explains both parameters: vmid is 'Guest to suspend' and to_disk means 'Write memory state to disk (hibernate) instead of holding it in RAM'. This effectively compensates for the schema gap.

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

Purpose4/5

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

The description uses a specific verb ('Suspend') and resource ('VM'), clearly stating the tool's action. It distinguishes from siblings like start_guest and stop_guest, though it doesn't explicitly mention alternatives.

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, nor any exclusions or prerequisites. It simply states the action, leaving the agent to infer context.

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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