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

Annotations already declare readOnlyHint, idempotentHint and destructiveHint=false, so the safety profile is covered. The description goes beyond that by disclosing operational traits: one bounded request, no background polling or auto-retry, metered/delayed access tied to the account, affiliate 27 exclusion, and the warning that empty results don't imply lack of coverage. These are useful beyond the structured fields.

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?

The core purpose is front-loaded, but the text is a run-on block that mixes purpose, product/price wording, operational limits and legal disclaimers with no separation. Several phrases ('Product data or price calculation', 'No wagers, account changes or guarantee of returns') are boilerplate that dilute the actionable content.

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?

An output schema exists, so return values need not be explained, and annotations cover the read-only/idempotent profile. Still missing are sibling differentiation and any parameter-level guidance for a two-object nested schema, leaving gaps an agent must resolve elsewhere.

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 reported at 0% at the parameter level, so the description is expected to carry meaning — yet it never mentions sportID, date, offset (timezone boundary), or the include/status filters. The only parameter-adjacent statement is the exclusion of affiliate 27. It fails to compensate for the coverage gap.

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 verb and resource — get events with lines for a sport and date — which matches the title and is a clear improvement over a bare name. It does not, however, distinguish this tool from close siblings like v2GetEventsBySportAndDate, v2GetEventsByDate or v1GetScheduleBySport, leaving the agent to infer which variant to pick.

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 implied usage guidance: use the returned canonical IDs downstream, treat results as bounded, and don't infer market coverage from an empty result. But there is no explicit when-to-use-this-vs-alternative statement against the many sibling event-list tools, and the phrase 'Read-only Product data or price calculation' reads as boilerplate rather than actionable instruction.

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