get_kudoers_by_activity_id

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

With no annotations provided, the description carries the full burden. It does disclose 'Read-only operation' and lists required scopes, which are important behavioral traits. However, it does not mention pagination behavior (though page/per_page are in the schema), rate limits, or error handling. Given the absence of annotations, this is adequate but not exhaustive.

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 somewhat verbose: it includes the endpoint, a 'Description:' label, and separate lines for scopes and read-only status. While it is front-loaded with a clear title, there is redundancy (e.g., 'Description:' is unnecessary, and the phrase 'activity identified by an identifier' is repetitive). It is not badly structured but is not tight either.

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 straightforward list endpoint with pagination, the description covers the core: it gives the endpoint, the purpose, the required scopes, and notes it is read-only. Pagination is handled in the schema, and the return value (the athletes) is stated. It does not mention response format details, but for this simple case that is acceptable. It is reasonably complete given the tool's simplicity.

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% (all three parameters have descriptions), so the baseline is 3. The description adds no extra meaning beyond what the schema provides—it merely restates that an activity is identified by an id and does not elaborate on page or per_page semantics. Thus, it adds minimal value.

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 a specific verb ('List') and resource ('Activity Kudoers'), and explicitly says it returns 'the athletes who kudoed an activity identified by an identifier'. This distinguishes it from sibling tools like get_comments_by_activity_id and get_laps_by_activity_id, so an agent can easily separate it without opening schemas.

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 provides clear usage context by specifying the required scopes for different activity visibility levels ('activity:read for Everyone and Followers activities', 'activity:read_all for Only Me activities'), which is essential for determining when this tool can be used. However, it does not explicitly contrast with alternative tools or state when not to use it, so it misses a full 5.

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