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

With no annotations present, the description carries the burden of behavioral disclosure and does a reasonable job: it states that rankings come 'from each player's own record before the match' and provides measured accuracy figures on 236 matches. This gives useful expectations about data recency and performance, though it does not describe error behavior or output shape.

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 front-loaded with the core purpose and the performance statistics are contained in a single sentence. The trailing 'Per call.' adds little for tool invocation and stops the score from reaching 5, but overall the description is well-structured and not bloated.

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?

The description and schema together cover the input requirements well, but there is no output schema and the description does not explain the exact return shape beyond the inferred ranking and captain/vice-captain selections. The schema's mention of `not_recognised` hints at output behavior, but the overall response format is not fully 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?

Schema description coverage is 100%, so the schema already explains each parameter, including the deprecated venue and is_chase fields. The main description adds no parameter-level detail beyond reinforcing that the tool ranks the submitted players, so the baseline 3 is appropriate.

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 clearly states the tool ranks an agent-supplied set of players for a men's T20 fantasy team and selects a captain and vice-captain. It is unambiguous about the resource and action, though it does not explicitly differentiate itself from the cricket sibling tools such as hsh-cricket-form or hsh-cricket-matchup.

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 description implies when to use the tool (when you have players to rank for a T20 fantasy team), but it gives no explicit guidance about when not to use it or what alternative sibling tools should be used instead. There is no mention of exclusions such as women's matches, live matches, or non-T20 formats.

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