player_stats

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

No annotations are supplied, so the description carries the full disclosure burden, yet it says nothing about whether the operation is a read, whether results are paginated, what happens when multiple filters are provided, or what an empty result looks like. For a six-parameter query tool, this leaves substantial behavioral questions unanswered.

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?

The single fragment is compact and front-loads the resource, but it is under-specified rather than genuinely concise. Trimming is not the issue; there is simply too little content.

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 six parameters, one required (season), no annotations, and no output schema, an agent needs to know how season interacts with optional filters and how paging works. None of that is covered, so the definition is not sufficient to call the tool confidently.

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 67%, with page and search undocumented in the schema. The description repeats the names of id, team, and league without adding format or semantics, and it mentions search without saying whether it matches player names or something else, so it fails to compensate for the coverage gap.

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?

"Player statistics" names a resource, and the phrase "by player id, team, or league + search" hints at the filter axes. But it is a sentence fragment with no verb, and it never distinguishes itself from the sibling tools team_stats or search_teams, which an agent could easily confuse with it.

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 statement of when to use this tool versus team_stats, search_teams, or lineups. It is also unclear how the filters combine, whether they are alternatives or can be used together, and what "+ search" means in practice.

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