Create a placement group

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

No annotations are provided, so the description carries the full behavioral burden. It discloses one useful trait — that the operation is 'Free' (no cost) — but says nothing about permissions, whether creation is idempotent, what happens on duplicate names, or what side effects occur. For a mutation tool with zero annotation coverage, this is a substantial gap.

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?

It is extremely short and front-loaded, with no wasted words, but the 'Free.' fragment reads as an afterthought rather than structured disclosure. Conciseness here borders on under-specification for a 3-parameter mutation tool.

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?

With no annotations, no output schema, a nested 'labels' object, and an undocumented enum-like 'type' parameter, the description is too thin to be complete. An agent lacks the behavioral and usage context needed to call this mutation tool confidently.

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?

Schema coverage is 67%, and the description adds no meaning beyond the schema. The 'type' parameter is documented only as 'For example spread' with no enum, and 'labels' is completely undocumented in both schema and description. The description does not compensate for the coverage gap.

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 states a specific verb and resource ('Create a placement group'), which is enough for an agent to distinguish it from the create_* siblings by resource type. It stops short of explaining what a placement group is or how it differs functionally from other create operations, but the core purpose is unambiguous.

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?

There is no guidance on when to use this tool versus alternatives, no mention of prerequisites (e.g., needing a location or server context), and no exclusions. The agent is left to infer everything about usage context from the name alone.

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