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

Annotations already declare read-only, non-destructive, idempotent behavior; the description adds valuable edge-case behavior (all-or-nothing validation with a 400 for any malformed ID) and the per-item price. This goes beyond what annotations capture.

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 with no filler: the first states output and content, the second states cost and the critical failure mode. Key information is front-loaded and every sentence earns its place.

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?

With a rich input schema, an output schema, and safety annotations, the description covers the important operational details: output fields, batch cap, cost, and failure mode. It is complete enough for correct invocation, though a note comparing it to seller_products/seller_reviews would round it out.

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%, so the schema already documents seller_ids, the 13-15 character rule, the max of 10, and the geo enum/default. The description mostly restates these facts without adding new parameter-level meaning.

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 names a specific verb and resource ('Returns the storefront profile for each seller id') and enumerates the exact payload fields (business name, rating, feedback counts, address, marketplace presence). This clearly distinguishes it from sibling tools like seller_products or seller_reviews.

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 batch storefront-profile use and notes the 10-ID maximum and cost, but it provides no explicit when-to-use guidance or comparisons with alternatives such as seller_products or product_details_batch. Usage context is inferable, not stated.

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