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

Annotations already flag a non-read-only, open-world operation, and the description usefully adds the return contract (shopUrl share link + ownerUrl) and the default-resolution rule for marketplace/locale. It says nothing about idempotency, duplicate-board behavior on retry, failure modes when item sources are empty, or external-service rate limits — meaningful gaps for a one-shot mutation that hits an external marketplace.

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 front-loaded 'One call' claim is good, but the second sentence restates it ('One-shot: create a wedding gift board and fill...'), wasting space, and 'defaults as described' is a vague pointer. Dense but partly redundant for a three-sentence description.

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?

Eleven parameters, no output schema, and no required fields make this a high-complexity tool, yet the description explains only the marketplace/locale defaults and the two returned URLs. Missing is how to compose a valid call — whether any personalization field is needed, what happens with zero item inputs, and how the optional curation fields interact — which is exactly what an agent needs before invoking it.

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 only 18%, so the description must carry the load and it only partially does: 'fill from ASINs/keywords/queries' maps onto itemAsins/itemKeywords/itemQueries, but leaves unexplained whether those three are alternatives or combined, and says nothing about occasion, styleTags, budgetBand, coupleNames, recipientName, or weddingDate. With 11 all-optional parameters and no required inputs, an agent has no guidance on which fields materially shape the board.

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?

States a specific verb and resource (create a curated wedding gift wishlist) plus the outcome (shopUrl/ownerUrl), and the 'one-shot' framing implicitly sets it apart from the create_wishlist + add_item pair in the sibling list. It never names those siblings explicitly, so the differentiation is inferred rather than stated.

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?

'One-shot: create a wedding gift board and fill from ASINs/keywords/queries' implies you should pick this when you want creation and population in a single step, and gives the marketplace/locale condition ('amazon.com for US users, amazon.se for Sweden'). There is no explicit when-not or named alternative against create_wishlist and add_item, which is the main routing decision an agent faces here.

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