download_sketchfab_model

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

With no annotations provided, the description carries the full burden of behavioral disclosure. It mentions that the model must be downloadable and proper access rights are needed, which adds some context. However, it lacks details on what 'import' entails (e.g., file format, destination), potential side effects, error handling, or rate limits, leaving significant gaps for a tool that likely involves network operations and file system changes.

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 appropriately sized with three sentences: the first states the purpose, the second explains the parameter, and the third covers returns and prerequisites. It's front-loaded with the core action, but the last sentence could be more structured to separate return values from requirements.

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 complexity of downloading and importing a model, no annotations, no output schema, and low schema coverage, the description is incomplete. It doesn't explain what 'import' means in this context, the expected output format, error conditions, or how it interacts with sibling tools, leaving the agent with insufficient information for reliable use.

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 description explicitly defines the 'uid' parameter as 'The unique identifier of the Sketchfab model', adding meaning beyond the input schema which has 0% description coverage and only provides a title 'Uid'. This compensates well for the schema's lack of detail, though it doesn't elaborate on format or validation rules.

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') and the resource ('a Sketchfab model by its UID'), making the purpose specific and understandable. However, it doesn't explicitly differentiate from sibling tools like 'search_sketchfab_models' or 'import_generated_asset', which could help the agent choose correctly.

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 when you have a specific Sketchfab model UID to download and import, but it doesn't provide explicit guidance on when to use this tool versus alternatives like 'search_sketchfab_models' or 'import_generated_asset'. No exclusions or prerequisites are clearly stated beyond access rights.

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