download_sketchfab_model

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

No annotations provided, so description carries full burden. It mentions scaling behavior and access rights, but does not disclose failure modes, side effects, or whether it is a write operation. Adequate but could be more transparent about error handling and scene impact.

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 relatively concise, with a clear opening sentence and parameter details in bullet points. However, it repeats target_size description twice. Front-loaded but could be slightly more efficient.

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 no output schema, description states return details (object names, dimensions, bounding box). Covers main points for a simple tool, though lacks handling of invalid UID or existing imports. Sufficient for the context.

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%, so description adds value. It explains both parameters: uid as unique identifier and target_size with examples for context. Adds meaning beyond the schema's basic type and required field.

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 (download and import), the resource (Sketchfab model), and the identifier (UID). It distinguishes from sibling tools like search_sketchfab_models and get_sketchfab_model_preview, which are search/preview tools.

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 does not explicitly state when to use this tool vs alternatives. No when-not or comparison to siblings like search_sketchfab_models or import_generated_asset. It implicitly assumes usage when a UID is known, but no exclusions provided.

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