yahoo_sports_player

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

No annotations exist, so the description carries the full burden. It discloses the data source (sports.yahoo.com's server-rendered page), the return sections (bio/overview plus current-season stats), and the ID derivation path. It stops short of describing the result format or failure modes, but the primary behavior is clearly conveyed.

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 first sentence is front-loaded with the tool's purpose and contents, and the league list, though long, is necessary because the schema does not define an enum. The description is compact relative to its domain knowledge, though the league enumeration makes it lengthy.

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 two-parameter, no-output-schema tool, the description covers the essential invocation: league selection, player ID derivation, and the resulting data. It would be more complete with an explicit note on return shape or edge cases, but the core call is well specified.

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 only says 'League key' and 'Numeric Yahoo Sports player id', but the description goes far beyond that by enumerating all 24 supported league values and specifying exactly how to extract the numeric player ID from a roster's URL path. This is directly actionable and reduces parameter errors.

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?

Opens with a specific verb and resource: 'Returns one player's bio/overview' and lists concrete content (position, jersey, status, injury, physicals, college, draft position, current-season stats). This is clearly the single-player Yahoo detail endpoint, distinguishing it from siblings like yahoo_sports_team_roster or yahoo_sports_team.

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?

Clear context is provided for when to use this tool: when you need a specific Yahoo Sports player's full profile/stats. It also gives the mounting valuable usage detail that the player ID is the last path segment of a roster response's player URL. No explicit alternatives are named or excluded, but the source and purpose are unambiguous.

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