Copy Drive File

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

Annotations already cover the safety profile (non-read-only, non-idempotent, non-destructive), so the bar is lower. The description adds useful context — the copy 'maintains all formatting and content from the original' and can be placed in a new location — but omits copy-specific behavioral caveats such as whether sharing settings or permissions are inherited by the copy, which agents often need for Drive operations. No contradiction with 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?

Three compact sentences with the core purpose front-loaded in the first. The third sentence earns its place by adding the fidelity guarantee (formatting and content preserved), while the second is largely redundant with the first plus the schema — a minor flaw, not a structural problem.

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?

The output schema and 100% parameter coverage give the agent a complete input contract, and annotations cover mutability and safety, so return values need no explanation. What is missing are copy-specific caveats that matter for correct invocation: whether permissions are inherited by the copy, whether a copied native Google file stays in its original format, and the access required on the source file.

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 100%, so the baseline is 3: the schema already documents file_id, new_name including the 'Copy of [original name]' default, parent_folder_id defaulting to root, and user_google_email. The description restates 'new location' and 'optional new name' at a high level but adds no meaning beyond what the schema's parameter descriptions already provide.

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 first sentence names a specific verb+resource: 'Creates a copy of an existing Google Drive file,' which clearly separates it from creation tools like create_drive_file. However, it never explicitly names a sibling it is NOT, and the second sentence's reference to 'the template document' slightly muddies whether this operates on one specific template or on any arbitrary Drive file.

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?

No sentence tells an agent when to choose this tool versus alternatives such as create_drive_file (blank new file), import_to_google_doc (converting imports), update_drive_file (editing an existing file), or get_drive_file_content (reading). Among roughly 100 sibling tools, the only routing signal is the word 'copy' itself, which is definitional rather than actual usage guidance.

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