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by lazyants

Add Subnet to Network

hetzner_add_subnet

Add a subnet to an existing network. Specify subnet type, network zone, and optional IP range or vSwitch ID for Hetzner Cloud.

Instructions

Add a subnet to an existing network.

Input Schema

TableJSON Schema
NameRequiredDescriptionDefault
idYesResource ID
typeYesType of subnet
network_zoneYesName of the network zone, e.g. "eu-central"
ip_rangeNoIP range of the subnet
vswitch_idNoID of the vSwitch (required for vswitch type)
Behavior2/5

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

The description provides no behavioral details beyond the action. Annotations indicate non-readonly and non-destructive, but the description does not mention side effects, permissions, or state changes. For a creation tool, more context is expected.

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?

Extremely concise one-sentence description with no unnecessary words. It is appropriately sized for a simple tool.

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 description adequately states the purpose, but given no output schema, it would be helpful to mention what the tool returns. It also assumes the agent knows 'existing network' context. Adequate but not fully 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 description coverage is 100%, so parameters are well-documented there. The tool description adds no additional meaning over the schema, but the schema already suffices, giving baseline 3.

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 clearly states the action (Add) and resource (subnet). However, it does not differentiate from sibling 'add' tools for other resources beyond the resource name.

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?

No guidance on when to use this tool versus other network operations, such as 'delete_subnet' or 'attach_server_to_network'. No prerequisites or context provided.

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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