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

Annotations already declare readOnlyHint=true and openWorldHint=true, so safety and the fact that it reaches outside the local catalog are covered. The description adds that results include a reason per idea and links to live searches, which is mild added context but mostly restates the openWorld behavior an agent already knows from 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?

Two sentences, no filler, with the required input format front-loaded before the return description. Every clause carries information.

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?

There is no output schema, and the second sentence does describe what comes back (style ideas, one reason each, links to live searches), which is the main gap-closer. The remaining shortfall is the undocumented 'avoid' and 'count' parameters, which an agent must infer from the schema names alone.

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 0%, so the description must carry parameter meaning; it partially does by enumerating the aspects to capture (who, colors, fabric, climate, budget, monogram) and mapping budget to the budget field. It leaves 'avoid' and 'count' entirely unexplained and gives no hint about the 300-character query limit.

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 action (describe the recipient) and a specific output (scarf style ideas with reasons and live scarf search links), so an agent knows this is a scarf-specific idea generator rather than a search or try-on tool. It is distinguishable from siblings like shop_search or gift_basket_concierge, though it never explicitly names or contrasts them.

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 by prescribing the input form ('Describe the recipient in one sentence'), which signals a gift/recipient-recommendation scenario. However, it gives no explicit when-to-use versus alternatives (e.g., gift_basket_concierge, shop_search) and no exclusions or prerequisites.

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