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

Annotations already declare readOnlyHint=true, idempotentHint=true, openWorldHint=false and destructiveHint=false, so the safety profile is covered. The description adds useful scope detail (covers corners and free kicks, not just penalties, and returns each taker's share), but says nothing about filtering behavior, result size, or coverage when a team has no designated taker.

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?

A single tight sentence with the set-piece scope front-loaded and no filler. It is slightly overloaded by packing penalties, corners, free kicks and share-of-penalties into one clause, but nothing is wasted.

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 read-only, idempotent lookup with one optional filter and no output schema, the description conveys what is returned (takers and their share of penalties). It stops short of describing how results are grouped or whether the team filter narrows to a single club's takers.

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?

Only one optional parameter exists and the schema documents it fully with a 100% description coverage, including the default of all 20 clubs and an example value. The description mentions clubs only implicitly, adding no format or filtering nuance beyond the schema, so the baseline of 3 applies.

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 verb (find) and resource (penalty, corner and free kick takers) scoped to Premier League clubs in FPL, plus the output detail of each taker's share. This is clearly distinguishable from get_player, get_player_breakdown and other siblings by its narrow set-piece focus.

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 opening 'Use this to find...' frames the intended use but is essentially a restatement of purpose; it names no alternative tools and gives no when-not conditions. Usage is implied rather than contrasted with siblings such as get_player or find_players.

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