cumulus_wrapped

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

With no annotations, the description carries the full behavioral burden. It usefully discloses the login requirement and the content areas included, but it does not clarify read-only behavior, the time window covered, or what the 'full' option changes.

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 short and front-loads the purpose before the login requirement. It is efficient and readable, with only minor framing that is slightly marketing-oriented rather than purely operational.

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?

Because an output schema exists, the description need not explain return values. It still leaves gaps around the 'full' parameter and broader behavior, but it is adequate for a simple read-oriented summary tool.

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?

The only parameter, 'full', is not mentioned in the description at all, and the schema provides no description for it (0% coverage). The description therefore does not compensate for the missing parameter semantics, though the single optional boolean is relatively low-risk.

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 that this is a Cumulus 'year in review' covering top products, categories, shop, and savings. It does not explicitly distinguish itself from related siblings such as purchase_analytics or cumulus_points, but the annual-summary framing is specific enough for an agent to understand its purpose.

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 usage for an annual recap and states 'Requires login' as a precondition. However, it provides no explicit when-to-use guidance versus alternatives like purchase_analytics, nor any when-not-to-use exclusions.

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