preset_download_kenney

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

No annotations are provided, so the description must carry full burden. It states the tool downloads and extracts (mutating behavior) but does not disclose side effects (e.g., file overwriting, network requirements, or any destructive actions). This is insufficient for safe agent selection.

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 short and front-loaded with the purpose. The slug example is clear and well-placed. The Args section is part of the description, adding structure. Every sentence earns its place, though the omission of destination is an issue.

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?

No output schema, no annotations. The tool downloads and extracts, but the description does not explain the output (e.g., success message, file location), error conditions, or prerequisites (e.g., internet connection). The destination parameter is not clarified, leaving gaps for the agent.

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 explain all parameters. It only explains the 'slug' parameter with an example, leaving 'destination' undefined. The agent would not know what to pass for destination or its impact, resulting in incomplete parameter understanding.

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 extracts a Kenney pack (CC0) by resolving the link. It uses a specific verb for the resource ('Kenney pack') and distinguishes it from sibling download tools (polyhaven, ambientcg, etc.) by the specific source.

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 an example for the slug parameter, explaining it's the last part of the URL. However, it does not explicitly guide when to use this tool versus alternatives (e.g., when not to use it, or how to choose among Kenny/polyhaven/ambientcg tools). The context is implied but not explicit.

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