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

Annotations already declare readOnlyHint=true and destructiveHint=false, so the read-only safety is covered. The description adds no extra behavioral context such as pagination behavior, authentication needs, or return format details, leaving it at the baseline.

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 a single sentence, but it begins by repeating the tool's title ('List Club Members') before adding new information. While concise, the redundancy makes it slightly less efficient than necessary.

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 tool is a simple read-only list operation with no output schema and annotated as safe. The description conveys the primary purpose and differentiates from siblings, but omits parameter semantics and pagination details, leaving gaps for full autonomous invocation.

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%, and the description does not explain that the required 'id' is the club identifier, nor does it clarify the optional 'page' and 'per_page' parameters. It only vaguely refers to 'a given club', which is insufficient for correct invocation.

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 uses a specific verb ('List') and resource ('Club Members') and clearly defines the return as 'athletes who are members of a given club.' This distinguishes it from sibling tools like getClubAdminsById and getClubActivitiesById by specifying the member/fan/athlete 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 description implies a use case (listing club members) but does not explicitly state when to prefer this tool over siblings. No exclusion or alternative guidance is provided, though it is reasonably inferable from the wording.

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