Create Placement Group

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

Annotations already indicate a write operation (readOnlyHint=false) and non-destructive nature (destructiveHint=false). The description adds minimal behavioral context beyond stating the creation action; it does not disclose permissions, idempotency (idempotentHint=false), or side effects.

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

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

The description is a single sentence of 11 words, efficiently conveying the core purpose without fluff. It is well-structured and front-loaded with the key action and resource.

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

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

For a creation tool with no output schema, the description is minimally adequate. However, it lacks contextual completeness by not explaining the role of placement groups in server distribution, that creation is a prerequisite for adding servers, or that only 'spread' type is available. An AI agent might need more context to use it appropriately.

Complex tools with many parameters or behaviors need more documentation. Simple tools need less. This dimension scales expectations accordingly.

Does the description clarify parameter syntax, constraints, interactions, or defaults beyond what the schema provides?

The input schema has 100% parameter description coverage, so the schema already explains each parameter. The description does not add further meaning or context, such as explaining the effect of the 'spread' type or the purpose of labels, beyond what the schema provides.

Input schemas describe structure but not intent. Descriptions should explain non-obvious parameter relationships and valid value ranges.

Does the description clearly state what the tool does and how it differs from similar tools?

The description clearly states the action ('Create') and the resource ('placement group') and provides a brief purpose ('control server distribution across hosts'). This distinguishes it from sibling tools like hetzner_add_server_to_placement_group and hetzner_update_placement_group.

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

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

The description offers no guidance on when to use this tool versus alternatives such as adding servers to an existing group or updating a group. It does not mention prerequisites, appropriateness of the 'spread' type, or scenarios where creation is needed.

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