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

Annotations already declare readOnlyHint=true and openWorldHint=true, so the safety profile is covered. The description adds that items are RSS-sourced, span 'available sports', and that article bodies are only included 'when available' — useful but modest context. It says nothing about feed freshness, pagination, or result volume.

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 with no filler; the core resource is stated first and the optional parameter last. It is efficient, though the phrasing 'global RSS news items across available sports' is a little compressed and would benefit from clearer scope wording.

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, the return format needn't be explained, and with one optional, fully documented boolean the parameter burden is low. The remaining gap is sibling disambiguation within the large livescore_news family, which the description does not address.

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 include_content is already fully documented. The description's phrase 'optionally include full article bodies' merely paraphrases the schema and adds no syntax or behavioral detail beyond it; baseline 3 applies.

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 verb and resource — retrieving LiveScore global RSS news items — and scopes them to 'across available sports'. However, it never distinguishes itself from close siblings such as livescore_news, livescore_news_article, or livescore_news_categories, leaving the agent to guess which news entry point 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 and no mention of alternatives, despite a crowded family of livescore_news* siblings. The agent is given no condition (e.g., 'use for aggregated feeds rather than single articles') to select this tool over the others.

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