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

Annotations already declare readOnlyHint and openWorldHint, so safety is covered. The description adds genuine behavioral context: the exact result shape (featured article plus the 25 most recent) and grouping by section, which the annotations cannot convey.

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, front-loaded with the returned resource, then the call syntax and follow-up tool. No filler; every clause 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 an output schema present and readOnly/openWorld annotations supplied, the description covers the remaining need: what is returned, how to call it, and how to resolve ids. Nothing an agent needs to invoke it correctly is missing.

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% and it already enumerates the type values and explains the id semantics, including the SPORT entity-id sourcing. The description merely restates the type values and repeats the news-categories cross-reference, adding no new parameter detail.

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 (article ids in Flashscore's news layout) scoped to a single entity, with exact content (featured + 25 most recent, grouped by section). An agent can distinguish this id-listing tool from the full-text and generic news siblings.

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?

Gives clear routing: pass type+id, source sport ids from flashscore_news_categories, and resolve returned ids with flashscore_news_article_body. It does not explicitly address when to prefer this over flashscore_team_news or flashscore_player_news, hence not a 5.

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