add_guest_to_list

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

No annotations are provided, so the description must cover behavioral traits. The description only says 'Grant a guest access,' implying a write operation, but does not disclose side effects (e.g., overwriting existing permissions), authorization requirements, or what happens on failure.

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 a single short sentence, which is minimal but not overly verbose. However, it sacrifices detail for brevity, lacking important context that would justify a higher score.

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 tool's moderate complexity (3 parameters, no output schema) and many siblings, the description is incomplete. It covers purpose but omits usage conditions, parameter details, and behavioral context, leaving an agent without enough information to use the tool effectively.

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 67% (2 of 3 parameters have descriptions). The description adds no extra meaning beyond the schema; it does not clarify the format or source of guest_id (which lacks a description) or provide context for permission_level values.

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 'Grant a guest access to a List' and specifies it's enterprise only. The tool name aligns with the purpose, and it distinguishes from sibling tools like add_guest_to_folder and add_guest_to_task.

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 only usage guideline is 'Enterprise only.' There is no guidance on when to use this tool versus alternatives (e.g., add_guest_to_folder), no prerequisites (e.g., guest must exist), and no exclusions or conditions for use.

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