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

Annotations already declare readOnlyHint, idempotentHint, openWorldHint=false and destructiveHint=false, so the safety profile is fully covered without the description. The description adds no behavioral context of its own - nothing about pagination behavior, result size, coverage limits, or empty-result handling - which is exactly what an agent would need beyond the annotations.

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 sentences with no filler, so nothing is wasteful, but the brevity comes from under-specification rather than tight editing. The required-parameter note is front-loaded well enough for an agent to skim.

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 five parameters, no output schema, and siblings covering overlapping ground, the definition should at minimum describe the shape of the returned player-game statistics and how pagination works. Neither is present, leaving the agent unable to predict results or route correctly.

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%, and the description compensates for none of it: sport's enum, limit's bound, and event_id are undocumented in both places. Saying 'sport and season are required' repeats the schema's required list verbatim and clarifies nothing about the season semantics (starting vs ending year) that the schema does document.

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 restates the title ('Statistics player-games') as 'Independent player-games statistics' without a verb or any explanation of what 'independent' means. It never distinguishes this tool from sibling get_context_player_stats or get_stats_games, so an agent cannot tell which statistics source it should query.

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 merely repeats the schema's required array. There is no indication of when to choose this tool over get_context_player_stats, get_stats_games, or get_stats_team_games, and no mention of when it should not be used.

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