get_updates_emails

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

No annotations are provided, so the description carries the full burden for behavioral disclosure. It conveys a read operation via 'Get' and scopes it to the Updates category, which is helpful. However, it does not mention whether returned items are metadata versus full content, or describe ordering/pagination behavior beyond the schema-provided limit.

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 one concise sentence that front-loads the core action and resource, then adds clarifying examples. Every word earns its place, and it is neither padded nor underspecified.

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?

The tool has no output schema and no annotations, so the description must shoulder more explanatory weight. It tells the agent what category of emails to fetch, but it does not describe return value shape or whether this returns summaries rather than full message content. Given the sibling get_email_content exists, this boundary is not fully addressed.

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%, and all three parameters (after, limit, before) already have meaningful descriptions. The tool description adds no additional parameter-level detail, which is acceptable given the schema's completeness, but it also does not enhance the agent's understanding 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 identifies the resource ('emails from Updates category') and the action ('Get'), with concrete examples like receipts and statements. It also differentiates from sibling category tools such as get_primary_emails and get_promotions_emails.

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 gives clear context for when to use the tool by scoping it to the Updates category and illustrating with transactional email examples. It does not explicitly state when not to use alternatives, but the category naming and examples make the intended use fairly unambiguous.

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