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

No annotations are provided, so the description carries the full behavioral burden. It implies a read-only ranked search but discloses nothing about default sorting (total_points appears only in the schema default), pagination/limit behavior, result ordering guarantees, or what a yielded row contains. For a 9-parameter query tool this is thin.

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 semicolon-joined sentence with no filler; the core capability is front-loaded. It is arguably too short for nine parameters, but there is no wasted wording to trim.

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 nine parameters, zero annotations, and zero schema descriptions, the description should carry far more explanation. The output schema does exist, so return values need not be explained, but the filter semantics (price units, min_minutes meaning, available_only definition) remain entirely undocumented.

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 0%, so the description must compensate and only partially does. It supplies the position vocabulary (GKP/DEF/MID/FWD) and sort_by examples (form, price, ep_next), which are genuinely absent from the schema, but ignores name, team, limit, max_price, min_price, min_minutes, and available_only.

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?

States a specific verb pair (find/rank) and the resource (players), which an agent can distinguish from the singular sibling get_player and from compare_players. However, it never explicitly names the alternatives it should be chosen over, so differentiation is left to inference.

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 when-to-use guidance: nothing tells the agent when to pick search_players over compare_players, pick_captain, or suggest_transfers. The only implicit signal is that it returns ranked lists, which is not a usage rule.

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