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

Annotations already declare readOnlyHint=true and openWorldHint=false, so safety is covered. The description adds genuinely useful behavioral context beyond that: the data is scoped to the current season and may drift from the authoritative rulebook, which tells the agent to treat the output as advisory rather than definitive.

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?

A single well-formed sentence that front-loads the subject (race format) and folds the caveat into a parenthetical. No wasted text, though the sentence is somewhat dense with two distinct pieces of information.

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?

With no input parameters and no output schema, the description carries the return-value burden and does so reasonably: it names the format structure and the division-specific loads. It stops short of specifying output format or division coverage, but is adequate for a static reference 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?

The tool takes zero parameters, so per the rubric the baseline is 4. There is nothing for the description to clarify about inputs, and it correctly does not invent any.

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 states a specific resource and its contents: the HYROX race format (8 x 1 km runs + 8 stations) and station loads by division for the current season. It is clearly a reference-lookup tool, distinguishable from siblings like get_training_guide or search_races, 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 (look up format/loads before racing), and the parenthetical caveat to confirm against the current rulebook hints at when the data is trustworthy. However, there is no explicit when-to-use guidance or named alternative for related questions (e.g., training plans or race search).

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