Update Drive File

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

Annotations indicate destructive hint (true) and readOnly (false). The description adds key behaviors: content replacement 'in place' preserves file ID, sharing, comments, links; format conversion is consistent with import_to_google_doc. No contradiction with annotations; additional context provided.

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 short paragraphs. The first sentence states the main purpose. The second paragraph provides essential details about content replacement and conversion. No redundant or filler sentences; every sentence adds value.

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 (16 params, 2 required) and presence of output schema, the description covers the primary use case and key constraints. It doesn't explain return values (handled by output schema) and omits scenarios like updating only metadata. However, it is sufficient for an agent to understand the core functionality.

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 coverage is 100%, so baseline is 3. The description adds value by explaining the one-of requirement for content/file_path/file_url, the conversion behavior based on MIME type, and that metadata and content can be updated together. This goes beyond the schema's individual parameter descriptions.

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 'Updates metadata, properties, and/or content of a Google Drive file.' It specifies the verb (update) and resource (Drive file), and distinguishes from siblings like create_drive_file or copy_drive_file by highlighting in-place content replacement and preservation of existing attributes.

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 explains when to use content parameters ('Providing one of content, file_path, or file_url replaces the file's content') and allows combined metadata+content updates. It does not explicitly mention when not to use this tool versus alternatives like import_to_google_doc, but the context is clear for updating existing files.

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