get_rankings

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

With no annotations, the description carries the full burden of behavioral disclosure, but it only reveals the exact filter strings. It does not indicate whether this is a read-only operation, what output shape is returned, or whether the required sport parameter constrains the query, leaving the tool's runtime behavior mostly undisclosed.

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 description is short and contains no filler, and the filter values are front-loaded. However, it is a sentence fragment rather than a complete sentence, and the brevity crosses into under-specification rather than intentional conciseness.

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?

Given no annotations and no output schema, the description must carry more weight, but it fails to explain what the tool returns, what sports are supported, or how it differs from siblings like get_player_board and search_players. It is inadequate for reliable invocation of a two-parameter tool.

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. It documents valid values for 'filter' but says nothing about 'sport', which is the only required parameter – no allowed sports, format, or effect on results. The compensation is only partial.

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 is a fragment, 'Player rankings.', which essentially restates the tool name without an explicit verb like 'retrieves' or 'lists'. It does not distinguish this tool from closely related siblings such as get_player_board or get_player_stats, and the purpose remains vague.

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?

No guidance is provided on when to use this tool versus alternatives. The only usage hint is the filter enumeration (lifetime | last_3_months), but there is no explanation of when each filter is appropriate and no exclusions or context about not using this tool in favor of another.

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