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 and the description is not required to restate it. The description adds that results are paginated, which is useful behavioral context beyond the annotations, but it says nothing about ordering, freshness, result caps, or auth needs.

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 efficient sentence with no filler, and the core purpose is front-loaded. It is terse to the point that sibling differentiation and pagination mechanics are omitted, but nothing is wasted.

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 values need not be spelled out, and the annotations cover the safety profile. With 100% schema coverage on both params, the description supplies the one thing the structured data cannot: the discovery path for team_id. Adequate, though sibling disambiguation is absent.

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 already fully documented in the schema, making 3 the baseline. The description's phrase 'paginated' corroborates the start_index semantics but adds no format or range detail beyond what the schema provides.

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+resource+scope: 'paginated news items for a team id', which is more specific than a generic news feed and distinguishes it from siblings like fotmob_news or fotmob_trending_news by its team scoping. It does not explicitly name those siblings as alternatives, so it stops short of a 5.

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?

The description points to where the required team_id comes from ('from fotmob_search or fotmob_team'), which is a useful prerequisite chain. However it gives no guidance on when this team-scoped feed is preferable to siblings such as fotmob_latest_news, fotmob_news, or fotmob_news_article.

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