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

Annotations already declare readOnly, idempotent, non-destructive and openWorld, so the safety profile is covered. The description adds genuinely useful behavior beyond that: the exclusion set (drafts, withdrawn, member-only, subscriber data, unpublished research) and the framing that these are dated editorial reports rather than a live news feed.

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?

Three tight sentences: scope first, then the exclusion list, then the 'not a live news feed' clarification. No filler and every sentence carries distinct 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?

An output schema exists, so return-value detail is unnecessary, and annotations cover safety. Between the scope cap and the exclusion list an agent has enough to call this correctly; only the locale parameter's semantics go unexplained.

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. 'Up to ten' usefully conveys the ceiling behind the limit parameter's maximum of 10, but the locale parameter (en/zh) is never mentioned and no meaning is added for it; partial compensation earns a baseline 3.

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 (List) and resource (Ecomwith public/corrected ecommerce weekly reports), plus a hard scope cap of ten. The plural 'List' vs the sibling 'get_public_weekly_report' is inferable, but the description never explicitly contrasts the two, so it stops short of a 5.

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?

Usage is implied: it returns dated published/corrected reports, not a live feed, and excludes drafts, withdrawn issues, member-only sections and subscriber data. However there is no explicit when-to-use statement nor a pointed alternative (e.g. 'use get_public_weekly_report for a single issue'), leaving selection to inference.

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