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

Annotations already declare readOnlyHint, idempotentHint, destructiveHint=false, and openWorldHint=false, so the safety profile is covered. The description adds nothing beyond that — no explanation of what "independent" statistics mean, how pagination behaves, or what the response contains, leaving a read tool with unknown result shape.

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 short, front-loaded sentences with no filler, but the brevity comes at the cost of substance rather than being the product of tight editing. Nothing is wasted, but almost nothing is conveyed.

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?

For a five-parameter read-only stats tool with no output schema and 40% schema coverage, the definition leaves significant gaps: the semantics of "independent," the season-year convention for NFL vs NBA/NHL, and pagination behavior. It is not misleading, but it is thinner than the tool's complexity warrants.

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 only 40%, yet the description covers just sport and season — both already required by the schema — and says nothing about the season-year convention, event_id, or the after/limit pagination parameters. It therefore fails to compensate for the low coverage.

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?

"Independent team-games statistics" gives a resource (team-games statistics) and a vague qualifier ("independent"), but the verb/action is unstated and nothing distinguishes it from siblings like get_stats_games or get_stats_player_games. An agent can guess it returns team-level stats per game, but must open the schema to confirm.

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 only guidance is "sport and season are required," which restates the schema's required list rather than explaining when to choose this tool over get_stats_games, get_context_team_stats, or the other stats siblings. No when-not-to-use condition, no mention of what "independent" excludes.

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