get_league_users

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

No annotations are provided, so the description carries the burden, but it only implies a safe read via the verb 'Get'. It adds no auth/permission requirements, no rate-limit or pagination behavior, and no statement that the call has no side effects. For a zero-parameter read-only getter the risk is low, so this is adequate but 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?

Front-loaded with the purpose, which is good, but the bulleted field list and the trailing 'Returns: List of user dictionaries for all league participants' restate the same idea twice. That redundancy costs space without adding information, since an output schema already exists.

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 no-parameter, read-only list tool with an output schema present, the description covers identity, scope, and the cross-linking note with roster owner_id. Nothing essential for invoking it correctly is missing, though safety/behavioral context is left unstated.

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?

The tool takes zero parameters, so the baseline of 4 applies. There is no parameter syntax the description could usefully add or omit.

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?

Specific verb+resource: retrieves all users participating in the Token Bowl league, with an inline gloss ('team owners') that clarifies who a 'user' is. The scope word 'all' implicitly separates it from the singular get_user sibling, though no sibling is named explicitly.

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?

Usage is implied by the league-scoped framing rather than stated. The note 'Match user_id with roster owner_id to link users to their teams' is a useful usage hint, but there is no explicit when-to-use-this-vs-get_user/get_league_rosters guidance or any exclusion.

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