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

Annotations already cover the safety profile (readOnlyHint=true, openWorldHint=false, idempotentHint=false). The description adds useful context about data provenance ('from our leaderboards') and the fields returned, but says nothing about the odd non-idempotent hint, default behavior, or result shape beyond the field list.

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?

It is a single dense sentence that front-loads the primary capability and tacks the alternative lookup mode onto the end. Efficient, though the parenthetical field list makes it somewhat run-on and harder to parse quickly.

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 does the work of enumerating return content, and it names all three parameter roles. For a read-only lookup tool with full schema coverage this is largely sufficient, though the dual-mode behavior could be spelled out more crisply.

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 coverage is 100%, so the schema already documents all three parameters, including that name takes 'part of a golfer's name' and season defaults to the latest. The description reinforces that player_id drives the profile view, but adds no syntax or format detail beyond 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 names a specific resource (a golfer's profile and season results) and enumerates the fields returned (country, birth date/place, PGA rank, events, wins, top 10s, cuts, earnings), plus a secondary lookup-by-name mode. It is clearly distinguishable from get_golf_leaderboard and get_golf_tournaments, though it doesn't explicitly say so.

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 phrase 'or find golfers by name' implies a two-mode usage pattern tied to whether you have a player_id or a name, but there is no explicit guidance on when to prefer one mode, no prerequisites, and no mention of alternatives among the many sibling tools.

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