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

Annotations already declare readOnlyHint, idempotentHint, openWorldHint, and destructiveHint=false, so safety behavior is covered. The description adds valuable behavioral context beyond annotations: the 48-hour time window, the conditional availability of briefs ('when available'), and the exact composition of returned items.

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?

The description is two tight sentences with no filler. It front-loads the core purpose and follows with the filterable fields, making every clause earn 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?

Given six parameters, zero schema descriptions, and no output schema, the description provides a useful summary of return content and time scope but leaves key parameter semantics (limit, format, value formats) unexplained. It is adequate for a high-level understanding but incomplete for precise invocation.

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 compensate for all six parameters. It names four filters (lang, country, category, entity) but omits limit and format entirely, and provides no format or value guidance for any parameter, leaving much of the input semantics undocumented.

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 resource (stories) and scope (most widely covered right now, last 48h), and enumerates what each item includes: neutral brief, outlet count, languages, entities, representative report. This distinguishes it from sibling tools like get_story and search_news, which serve different retrieval patterns.

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 by the content scope and the filter list, but the description never states when to choose this tool over alternatives such as search_news or get_story. It gives no explicit when-not guidance or prerequisites.

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