set_drive_file_permissions

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

With no annotations, the description carries the full burden. It mentions 'Side effects: mutates sharing policy' and the required OAuth scope. However, it doesn't discuss potential reversibility, rate limits, or error conditions, which would add completeness.

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 concise, with 5 sentences that are well-structured and front-loaded with the main purpose. Every sentence adds value without unnecessary fluff.

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 that an output schema exists (so description doesn't need to explain return values) and the schema covers all parameters, the description provides sufficient context: purpose, side effects, usage guidance, and OAuth requirement. It is complete for this tool's complexity.

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 baseline is 3. The description summarizes the three toggle flags (link_sharing, writers_can_share, copy_requires_writer_permission) but does not add significant new meaning beyond what the schema already provides for each parameter.

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 verb 'Toggle' and the resource 'link-sharing and common file-level sharing controls'. It distinguishes itself from the sibling 'manage_drive_access' by specifying that this tool is for high-level toggles while the sibling is for per-user/group changes.

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?

Explicitly tells when to use this tool (high-level toggles) and when not to (use manage_drive_access for per-user/group changes). Also states 'At least one of the three flags must be set' and the required OAuth scope, providing clear usage context.

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