drive_downloadFile

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

No annotations are provided, so the description carries the full burden of behavioral disclosure. It only states the basic action and does not mention potential side effects (e.g., overwriting existing files at localPath), required permissions, or behavior for special file types like Google Docs formats. This is a significant gap for a tool that writes to the local filesystem.

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 a single, front-loaded sentence with no extraneous information. It states the verb, object, and destination directly, earning its place with zero waste.

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 two-parameter download tool, the description is minimally adequate but leaves gaps: no output schema exists, and the description does not clarify return values, error handling, or file overwrite behavior. The absence of annotations further reduces completeness, making it average rather than fully sufficient.

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 input schema provides descriptions for both parameters (fileId: 'File ID or URL', localPath: 'Local path to save the file'), achieving 100% schema description coverage. The tool description adds no additional meaning beyond the schema, so the baseline score of 3 is appropriate.

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 uses the specific verb 'Downloads' with a clear resource ('a file from Google Drive') and destination ('to a local path'), making the tool's purpose immediately obvious. It distinguishes itself from sibling tools like gmail_downloadAttachment (for Gmail attachments) and other drive_* tools that perform different operations.

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 no explicit guidance on when to use this tool versus alternatives, nor does it mention prerequisites or exclusions. While the action is straightforward and usage is implied by the description, the lack of any comparative context or conditions results in no guidance.

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