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hcloud-mcp
by Xodus-CO

list_storage_boxes

Read-only

Retrieve all Storage Boxes across pages and filter by exact name or label selector to inventory and locate Hetzner Cloud storage resources.

Instructions

List Storage Boxes (all pages). Optional filters by exact name and label selector

Tool call template

This tool declares no required parameters. Add optional parameters from the input schema as needed.

{
  "id": 1,
  "jsonrpc": "2.0",
  "method": "tools/call",
  "params": {
    "arguments": {},
    "name": "list_storage_boxes"
  }
}

Input Schema

NameRequiredDescriptionDefault
nameNo
sortNoSort fields with optional direction, e.g. ["name:asc", "created:desc"]
label_selectorNoLabel selector, e.g. env=prod

Schema Changelog

Changes observed during successful MCP inspections.

  1. Addedv0.1.1

TDQS

B3.4/5.0
Behavior3/5

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

Annotations already declare readOnlyHint=true and openWorldHint=true, so safety and external-state reach are covered. The description's only added behavioral fact is '(all pages)', which usefully signals automatic pagination and therefore potentially large or slow responses. It does not discuss rate limits, ordering guarantees, or the shape of what comes back.

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

Conciseness4/5

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

Two tight fragments with the resource name front-loaded and the pagination scope immediately after; nothing is redundant. It is arguably clipped to the point of terseness, which keeps it just under a 5.

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 three-parameter, no-required, read-only list tool with no output schema, the definition covers the essentials but omits what a list call returns, whether filters combine with AND, and what happens with zero matches. Adequate, 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 67%, with 'sort' and 'label_selector' already described in the schema. The description does add real meaning for the undocumented 'name' parameter by specifying it is an exact match rather than a substring search. That is genuine value, but it leaves the relationship between filters (AND semantics) and any wildcard behavior unaddressed.

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 ('List Storage Boxes') and adds scope with '(all pages)', so an agent knows this is the top-level box listing rather than the folder/snapshot/subaccount sub-listings in the sibling set. It stops short of explicitly naming a sibling it is not, so it lands at 4 rather than 5.

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 phrase 'Optional filters by exact name and label selector' implies the two narrowing modes, and '(all pages)' hints that this is the exhaustive listing. There is no explicit when-to-use vs. when-to-use-something-else guidance, no prerequisite or permission notes, and no warning about result volume.

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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