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rsp2k
by rsp2k

block_storage_detach

Detach a block storage volume from its instance using its label or ID. Choose live detachment to skip a reboot.

Instructions

Detach block storage volume from its instance.

Smart identifier resolution: Use volume label or ID.

Args: volume_identifier: Volume label or ID to detach ctx: FastMCP context for resource change notifications live: Whether to detach without rebooting the instance (default: True)

Returns: Success confirmation

Input Schema

TableJSON Schema
NameRequiredDescriptionDefault
liveNo
volume_identifierYes

Output Schema

TableJSON Schema
NameRequiredDescriptionDefault

No arguments

Schema Changelog

Changes observed during successful MCP inspections.

  1. Addedv1.0.1

TDQS

A3.9/5.0
Behavior3/5

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

With no annotations, the description carries the burden for behavioral disclosure. It usefully explains the 'live' parameter and states that a success confirmation is returned, but it omits side effects, permission requirements, or consequences of detaching a mounted volume. The information provided is helpful but not comprehensive for a mutating operation.

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 compact, clearly structured with Args and Returns sections, and front-loads the core purpose. Every sentence contributes useful information without 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?

The tool has a mutable effect, no annotations, and only two parameters, yet the description omits preconditions like the volume needing to be attached. It covers return behavior and identifier resolution, but an agent would still lack awareness of potential side effects or safety considerations.

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?

The input schema only defines bare types, so the description adds meaningful semantics: volume_identifier accepts a label or ID, and live controls whether detaching happens without rebooting. It even documents ctx for notifications, though ctx is absent from the schema. This offsets the 0% schema description coverage well.

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 opens with a precise verb and resource: 'Detach block storage volume from its instance.' This clearly distinguishes the tool from siblings like block_storage_attach and block_storage_delete. The extra 'Smart identifier resolution' note further clarifies the operational scope.

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 description implies the tool is for detaching a volume from an instance but gives no explicit guidance on when to choose it over alternatives or what prerequisites exist. It does not mention when not to use it, such as if the volume is not attached or if data safety requires additional steps.

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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