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

Annotations already cover readOnlyHint=true and openWorldHint=true, so the safety profile is settled. The description adds real value by disclosing that data is live, that pricing and active promotions are included, and that an active/out-of-stock inventory count is returned. It stops short of stating pagination limits or rate behavior, but the response shape is otherwise well communicated.

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?

A single front-loaded sentence that enumerates the catalog contents without filler. Every clause earns its place and no sentence is wasted.

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 an output schema, complete parameter descriptions, and annotations covering safety, the description needs only to frame the resource, which it does. The one real gap is sibling routing against sevennow_categories/product/stores, so it is not fully complete for selection.

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%, including an unusually explicit note that lat/lon are inert and that store_id alone selects the store. The description adds nothing beyond the schema, so the baseline 3 for full schema coverage applies.

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 resource and scope: one store's live product catalog, itemized as categories, paginated sections, and stock counts. It reads as clear retrieval rather than a tautology of the name. However, it never differentiates itself from close siblings like sevennow_categories, sevennow_category, or sevennow_product, so an agent must infer which one serves which need.

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?

There is no explicit when-to-use or when-not-to-use guidance and no mention of alternatives. The only implicit signal is the required store_id, whose schema description points back to /7now/stores, but the description itself offers no routing logic against the many sevennow_* siblings.

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