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

Annotations already declare readOnlyHint=true and destructiveHint=false, so 'Read-only' is largely redundant. The description does add useful context beyond annotations: 'including a short analysis when ready' signals the analysis field may be absent or delayed, and the no-wagering/ads/affiliate note characterizes the content's nature.

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 sentences, front-loaded with what is returned and keyed to the slug. The 'Read-only' clause duplicates the annotation and could be dropped, but there is no padding or filler.

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 output schema, the description usefully states what comes back (a tip plus optional analysis). For a read-only, non-destructive single-lookup tool this is nearly sufficient; it omits only edge behavior such as an unknown or not-yet-published slug.

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% — slug has an example and sport documents its enum values including the soccer/football aliasing. The description adds nothing beyond 'by match slug', so the schema does all the work; baseline 3 applies.

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 ('Returns one informational tip') and scopes it by match slug, which cleanly separates it from the list_* siblings that return collections. It does not name a sibling explicitly, so the differentiation is implied by 'one' versus 'list' rather than stated.

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 'by match slug' — the agent infers it needs a known slug, whereas list_today_tips/list_recent_results cover discovery. No explicit when-to-use, when-not-to-use, or named alternative is given, so the routing burden stays with the agent.

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