Set Drive File Permissions

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

Annotations already indicate destructive (write) behavior; the description adds context about being 'high-level' and for common changes, which aids agent understanding. 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?

Four sentences, front-loaded with purpose, then scope, example use, and alternatives. No wasted words, perfectly efficient.

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?

Covers purpose, usage guidelines, and distinguishes from siblings. Output schema exists, so return values need not be explained. Could mention prerequisites or immediacy of changes, but overall complete for the 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 adds no parameter details; all parameter meaning is conveyed by 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 the action ('sets file-level sharing settings and controls link sharing') and the resource ('Google Drive file or folder'). It distinguishes from siblings by naming alternatives for individual permission management.

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 says it's a 'high-level tool for the most common permission changes' and provides clear when-to-use and when-not-to-use guidance by referencing sibling tools for individual permissions.

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