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

Annotations already declare readOnlyHint, idempotentHint, destructiveHint=false and openWorldHint=false, so the safety and idempotency profile is fully covered. The description adds one useful scoping word, 'public', implying private/unlisted tournaments are not retrievable, but does not mention error behavior for an unknown slug or rate limits.

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 short bilingual sentences with no filler, and the key identifier formats are front-loaded. The title restates the same information, producing mild redundancy, but the body itself is tight.

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 one-parameter, read-only lookup with full annotation coverage, the description supplies everything needed to invoke it correctly. The absence of any return-shape note is a minor gap given there is no output schema, but the operation is simple enough that it does not impede selection or invocation.

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% and the single parameter already documents 'slug or page URL', which the description merely repeats. Baseline 3 applies since the schema carries the semantic load with no additional format or validation detail from the description.

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 public tournament'), and the parenthetical clarifies that the identifier can be either a slug or a page URL. It is distinguishable from the plural sibling search_tournaments by the singular scope, though it never names that sibling 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 only implied: the singular 'one public tournament' suggests this is for fetching a known entity rather than browsing. There is no explicit when-to-use statement, no mention of when to prefer search_tournaments, and no exclusions.

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