rhino_create_loft

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

Annotations already declare readOnlyHint=false and destructiveHint=false, indicating this is a mutating/creation operation. The description reinforces this by stating 'Loft a surface', which is consistent. However, it does not add extra behavioral context such as side effects, failure modes, or dependencies on existing objects. Since annotations cover the safety profile, this is adequate but not rich.

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 only two sentences with no fluff. The first sentence states the core action, and the second adds a brief usage hint. It is concise, front-loaded, and every word earns its place without redundancy. This is an example of efficient specification.

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?

The description is minimal and relies heavily on the input schema for parameter requirements (e.g., minItems=2, ordered curves). It does not mention potential constraints like coplanarity or intersection issues, nor does it explain the output. However, given that an output schema exists (signal indicates yes) and the schema handles parameter details, the description is just adequate. It could be more complete for a complex operation like loft, but it is not severely lacking.

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 tool description does not mention any parameters, and the schema description coverage signal is 0% (meaning the description provides no parameter details). However, the input schema itself has clear descriptions for each parameter (e.g., 'GUIDs of cross-section curves (ordered)', 'Loft type: Normal, Loose, Tight, Straight, Uniform'), so the schema carries the full burden. The description adds no extra meaning beyond the schema, so the baseline of 3 applies.

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 ('Loft a surface') and the resource ('multiple cross-section curves'), making the purpose unambiguous. However, it does not explicitly differentiate from similar surface creation tools like rhino_create_sweep1 or rhino_create_patch, though the term 'loft' is specific enough that a knowledgeable agent would understand it. It is not a tautology and adds context about smooth transitions.

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 provides some context ('Great for creating smooth transitions between different profile shapes') that hints at when to use this tool, but it does not mention alternatives, when not to use it, or any prerequisites (e.g., curve ordering, curve types). There is no explicit comparison to sibling tools like sweep or revolve, so the guidance is implied rather than explicit.

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