mlb_league_stats

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

No annotations are provided, so the description must disclose behavioral traits. It only adds 'ranked' and 'across both leagues', but omits details on sorting order, pagination, auth requirements, or output structure. This is minimal and insufficient for a tool without 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?

Three short sentences with no redundancy. The first sentence front-loads the purpose, the second clarifies output scope, and the third fills a gap in the schema. Each sentence earns its place.

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 no output schema, the description must explain return values. 'Returns ranked MLB season stat splits across both leagues' is vague about output structure and what stats are included. While parameters are clear, the missing details on response format and ranking criteria leave significant ambiguity.

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?

The schema covers all parameters but the 'group' description is terse ('Stat group'). The description adds crucial enum values ('hitting', 'pitching', 'fielding') that are absent from the schema, significantly improving parameter understanding. Other parameters are well-described in the schema.

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 clearly identifies the resource: 'Get ranked MLB league statistics' and specifies it returns 'ranked MLB season stat splits across both leagues', distinguishing it from team/player-specific tools like mlb_team_stats and mlb_player_stats.

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 implies usage for league-level stats by mentioning 'both leagues' and the group enum, but it does not explicitly state when to use this tool versus siblings or provide exclusions. The context is clear but lacks explicit alternatives.

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