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lazyants
by lazyants

Create Server

hetzner_create_server

Create a Hetzner Cloud server by specifying type, image, location, SSH keys, and optional networks, firewalls, and user data.

Instructions

Create a new server with the specified type, image, and configuration options.

Input Schema

TableJSON Schema
NameRequiredDescriptionDefault
nameYesName of the server
server_typeYesServer type name or ID (e.g. "cx22", "cpx11")
imageYesImage name or ID to use (e.g. "ubuntu-22.04", "debian-12")
locationNoLocation name (e.g. "fsn1", "nbg1", "hel1")
ssh_keysNoSSH key names or IDs to inject
networksNoNetwork IDs to attach the server to
firewallsNoFirewalls to apply to the server
user_dataNoCloud-init user data (base64 or plain text)
labelsNoLabels as key-value pairs
placement_groupNoPlacement group ID
public_netNoPublic network configuration
automountNoAuto-mount volumes after attach
start_after_createNoStart server after creation (default: true)
Behavior2/5

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

Annotations already indicate this is a non-read-only, non-destructive mutation. The description adds no behavioral context beyond the verb 'create', omitting details like cost, quotas, permissions, or provisioning time.

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?

The description is a single sentence (13 words) that front-loads the primary action. It is efficient, though 'configuration options' is slightly vague.

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

Completeness2/5

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

Given the complexity (13 parameters, nested objects, no output schema), the description is too brief. It fails to mention return values, asynchronous creation, or billing implications, leaving gaps for the agent.

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?

The schema provides 100% coverage for all 13 parameters. The description mentions 'type, image, and configuration options', which maps to required params and aggregates others, but adds minimal insight beyond the schema.

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 clearly states the verb 'Create' and the resource 'server', specifying key parameters (type, image, configuration options). It distinguishes this tool from siblings as the only server creation action.

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

Usage Guidelines4/5

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

The description provides clear context for when to use this tool (when a new server is needed). No explicit exclusions or alternatives are mentioned, but the tool's purpose is straightforward given its unique role among siblings.

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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