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

Annotations already declare readOnly, idempotent, non-destructive, closed-world behavior, so safety is covered. The description earns credit by disclosing the actual payload contents — verdict categories, outlet counts, first reporter, evidence link — which matters because there is no output schema. It still omits pagination, ordering, or result-size limits.

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 opens with the resource and scope before enumerating return fields. The long parenthetical verdict list is dense but is the most information-bearing part of the sentence, so it still 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 no output schema, the description does the heavy lifting on return values and does it well, naming every field an agent would care about. What is missing is only operational detail — filtering, ordering, and how it relates to search_reports — rather than anything blocking a correct call.

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 both parameters are documented in the schema already; baseline is 3. The description hints at the required product scoping ('for one product') but says nothing about the optional 'category' filter or valid category values.

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: 'Every well-sourced pre-release report for one product', which tells an agent exactly what set it returns. It does not differentiate from the sibling 'search_reports' or 'get_product_news', so an agent must infer which of the three to pick.

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 when-to-use guidance, no prerequisites, and no mention of the near-identical sibling 'search_reports'. The 'one product' phrasing weakly implies a per-product lookup, but that is inference rather than stated guidance.

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