rhino_array_polar

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

Annotations declare readOnlyHint=false, indicating a write operation, which aligns with 'Create'. However, the description adds little beyond the name—it doesn't clarify whether original objects are copied or moved, whether any objects are modified in place, or what the output contains. Since annotations already cover the safety profile (non-destructive), the description fails to provide meaningful behavioral detail.

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, grammatically clear sentence that front-loads the core concept. It is efficient in wording, but it sacrifices critical detail for brevity, making it borderline under-specification rather than well-structured conciseness.

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?

Given the tool's complexity (multiple parameters, nested schema, output schema, and many siblings), the description is grossly insufficient. It does not explain prerequisites (e.g., selecting objects), the meaning of 'angle' or 'axis', or expected return values. The presence of an output schema mitigates return-value explanation, but overall completeness for a tool like this is low.

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 description coverage is 0%—the description mentions no parameters. Although the input schema itself has detailed descriptions for guids, count, center, axis, and total_angle, the tool description does not compensate for the low coverage. An agent must rely entirely on the schema, and the description adds no guidance on how to use these parameters together.

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 operation ('Create') and the resource ('polar (circular) array of objects around a center point'), distinguishing it from linear arrays and other creation tools. The action and target are specific and 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?

The description implies usage for circular arrangements but does not explicitly state when to prefer this tool over alternatives like rhino_array_linear. It lacks any contrast or condition-driven selection guidance, leaving the agent to infer 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.