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reset_vm

Hard reset a VirtualBox VM to recover from an unresponsive guest; unsaved guest data is lost.

Instructions

Hard reset a VM. Unsaved guest data is lost.

Input Schema

NameRequiredDescriptionDefault
vmYesVM name or UUID
approvalIdNoApproval ID issued for a previously requested destructive operation

Schema Changelog

Changes observed during successful MCP inspections.

  1. First observedv0.1.0

TDQS

A3.5/5.0
Behavior3/5

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

With no annotations, the description carries the full burden, and it does disclose the key consequence: unsaved guest data is lost. It omits other important behavior for a destructive power operation — that an approvalId may be required, whether the reset is reversible, and what state the VM is left in — so the safety profile is only partially covered.

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?

Two short sentences, action front-loaded and the destructive consequence immediately after. No filler or redundancy.

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

Completeness3/5

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

For a destructive power operation with no annotations and no output schema, the description covers the primary risk but leaves the approval flow and post-reset state unaddressed. It is adequate but not complete.

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 both the vm identifier and the approvalId semantics are already documented in the schema. The description adds nothing about either parameter; the baseline 3 applies when the schema does all the work.

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?

States a specific verb and resource ("Hard reset a VM") and the word "hard" signals it differs from a graceful shutdown. However, it never names the sibling it is distinct from (shutdown_vm, poweroff_vm, discard_saved_state), so an agent must infer the boundary from the adjective alone.

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

Usage Guidelines3/5

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

The warning that unsaved guest data is lost implies this is the abrupt, last-resort option, but the description gives no explicit when-to-use versus shutdown_vm or poweroff_vm and no preconditions. Usage is inferable rather than stated.

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