download_sketchfab_model

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

With no annotations, the description only mentions return type (message) and prerequisites. It does not disclose side effects (e.g., scene modification), idempotency, rate limits, or error handling beyond success/failure.

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?

Description is short and presents action first, then parameter and return. It could group the prerequisite line more efficiently, but overall is well-structured and not verbose.

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 simple tool with one parameter and no output schema, description covers the basic action and prerequisites but lacks usage guidance and behavioral context, making it minimally complete.

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?

Coverage is 0%, so description must compensate. However, it merely restates 'uid: The unique identifier of the Sketchfab model' from the schema without adding format, examples, or constraints.

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 it downloads and imports a Sketchfab model by UID, distinguishing it from sibling tools like search_sketchfab_models and download_polyhaven_asset.

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?

Specifies prerequisites (model must be downloadable, proper access rights) and return value, but does not explicitly mention when to use this tool over alternatives or that the UID likely comes from search_sketchfab_models.

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