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

Annotations already declare readOnlyHint=true and openWorldHint=true, so the safety and open-world profile is covered. The description adds that the returned data is 'public article-card metadata' and that category paths are relative and discovered externally, but says nothing about pagination, result limits, or rate behavior. With annotations carrying the main behavioral load, this is adequate but not rich.

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?

Front-loaded with the core purpose, then the discovery path, then the parameter, then the alternative tool. It is short overall, though the category sentence duplicates the schema text word-for-word, which is wasted space rather than added value.

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 not needed; the description covers what the tool returns at a high level, how to obtain valid category paths, the special 'all' value, and where to go for the RSS feed. For a single-required-parameter read tool, nothing essential 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 the sole parameter is already fully documented in the schema. The description repeats the schema text almost verbatim ('Use all for the home feed or a relative news path from /livescore/news-categories, such as football/premier-league'), adding no new format or validation detail. Baseline 3 applies when the schema does the heavy lifting.

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 and resource: 'Returns public article-card metadata for a LiveScore news route,' which is concrete and tells the agent this is a card-metadata fetch rather than a full article fetch. It differentiates from one sibling by naming livescore_news_feed, but does not clearly separate itself from livescore_news_article or livescore_news_categories, which also operate on the same domain.

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 context: category paths should be discovered from /livescore/news-categories, and it points to livescore_news_feed for the global RSS feed. It stops short of an explicit when-not rule ('don't use this for full article bodies, use livescore_news_article'), so the routing against the closest sibling remains implicit.

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