preset_download_url

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

No annotations are provided, so the description must carry the full burden of behavioral disclosure. It mentions download location and extraction, but does not address side effects like overwriting, size limits, network usage, or caching. This is insufficient for a tool with no annotations.

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 two well-structured sentences with no filler. The main purpose is front-loaded, and the extraction condition is clearly stated. Every sentence serves a purpose.

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 has 4 parameters, no output schema, and no annotations, the description covers the main behavior and two parameters partially. It misses explanations for 'filename' and 'destination', and does not fully specify the behavior of the tool. Sibling tools like preset_extract_archive are related but not cross-referenced.

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 the description must add meaning. It explains the 'url' parameter (direct URL, file types) and 'extract' (default true, extracts archives). However, 'filename' and 'destination' are left unexplained, leaving gaps despite partial compensation.

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 tool downloads a file from a direct URL into the local library, listing supported file types (zip, glb, fbx, wav). It distinguishes from siblings like preset_library_list and preset_extract_archive by focusing on URL-based downloads, but does not explicitly differentiate from other preset_download_* 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 implies usage for direct URL downloads and explains extraction behavior when extract=True. However, it lacks guidance on when not to use this tool or mention alternatives like downloading from specific sources (e.g., preset_download_polyhaven).

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