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

Annotations already declare readOnlyHint=true and openWorldHint=true, so safety is covered. The description adds genuinely useful behavior beyond that: the payload is returned 'exactly as the API sends it', signalling no normalization or trimming, and it enumerates the payload sections the agent will receive.

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?

Two sentences, front-loaded with the purpose and ending with the key constraint. The long enumeration of payload fields overlaps with the existing output schema, so a small amount of the text does not earn its place.

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 an output schema, two fully documented optional parameters and read-only annotations, the definition supplies everything needed to invoke it correctly. The only meaningful gap is the absent contrast with sibling team tools, which leaves the agent to infer which team endpoint to call.

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 coverage is 100% and both parameters already document origin, format, examples and mutual exclusivity, so the description is largely restating structured data. It reinforces the 'never both' rule but adds no new syntax or edge-case meaning, making baseline 3 correct.

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?

States a specific verb and resource ('Get One Formula 1 team's editorial assembly') and enumerates the payload contents, so the agent knows exactly what comes back. It does not distinguish itself from the plain `formula1_team` sibling, so an agent must infer that 'editorial assembly' means a richer, SEO/media-laden payload rather than basic team data.

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 gives usage guidance only at the parameter level ('use either key or identifier, never both') and implies when to use it by naming the dependency on formula1-json-editorial resource=constructor-listing. There is no explicit when-not-to-use or pointer to a lighter alternative such as formula1_team.

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