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

Annotations already declare readOnlyHint=true and openWorldHint=false, so the safe, self-contained read profile is covered. The description adds useful provenance ('from the official rulebook'), which signals authoritative, non-user-specific content, but it says nothing about whether results are static or versioned. No contradiction with annotations.

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 front-loaded sentence that states the subject matter and the source, with no filler or redundancy. Nothing could be removed without losing 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?

For a no-parameter, no-output-schema reference tool, the description adequately scopes what the agent will receive (format plus per-division station loads) and where it comes from. It would be slightly stronger if it indicated the result is a fixed reference set rather than live race data.

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 there is no parameter semantics to document; baseline is 4. The description's mention of 'by division' correctly signals that all divisions are covered in a single call rather than selected via input.

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 names the exact content delivered: the HYROX race format (8 x 1 km runs + 8 stations) and station loads by division. That is specific enough to separate it from get_race, get_training_guide, and search_races, though it never explicitly contrasts itself with those siblings or states a verb for how the content is retrieved.

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?

There is no guidance on when to call this versus get_race or get_training_guide, and no stated trigger condition. The agent must infer that this is a static rules-reference lookup rather than a data query, with nothing in the text confirming that inference.

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