drive_update_permissions

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

With no annotations, the description carries the full burden of behavioral disclosure. It does disclose the critical safety gate: 'Requires confirm: true as a safety gate since permission changes affect access control.' However, it does not explain consequences such as ownership transfer risks, reversibility, or auth requirements, leaving gaps.

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 sentences, front-loaded with the primary purpose, and includes a critical usage note without fluff. Every word earns its place.

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?

Without annotations or output schema, the description provides the core purpose and the confirm gate, but it lacks details on side effects (e.g., what changing to 'owner' implies, whether access is revoked). It is adequate for a simple permission update but leaves some behavioral context uncovered.

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 all parameters are described structurally. The description adds value by explaining why `confirm` is required (safety gate), which reinforces its semantic importance, but it does not add detail for other parameters beyond the schema.

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 a specific action: 'Update an existing permission on a Google Drive file.' This verb-resource pairing is unambiguous and distinguishes it from sibling tools like drive_share_file (which creates permissions) or drive_trash_file (which modifies file state).

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 implies this tool is used for updating permissions that already exist, but it does not explicitly contrast with drive_share_file (which creates new permissions) or mention when not to use it. The confirmation requirement is a usage gate, but alternatives or exclusions are not named.

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