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

Annotations already declare readOnly, idempotent, non-destructive, open-world, so the safety profile is covered. The description goes further with genuinely useful operational context: one bounded request, no background polling or automatic retry, metered/account-scoped access, affiliate 27 excluded, and the warning that an empty result does not imply missing coverage. That is real value beyond the 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?

The content is packed into an unstructured run-on string with no sentence separation, and the trailing clause 'No wagers, account changes or guarantee of returns' is generic boilerplate. The most valuable constraint (bounded request, no retry) is buried mid-string rather than front-loaded after the purpose.

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 the description adequately covers the safety/operational envelope. What is missing is any guidance on the query filters that actually shape a schedule request (date window, team/division/conference narrowing, pagination behavior), leaving a nested-schema tool under-explained.

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 description never mentions sportID, date ranges, pagination cursors, or any of the nine query filters. With schema description coverage reported at 0% and a nested two-object schema (path + query), the description should have compensated for the undocumented filters (from, team_id, division_id, season_year, limit) and it does not.

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 opening clause 'Get event schedule for a sport' gives a clear verb and resource, which is enough to separate it from data-point siblings like v1GetMoneylines or v1GetTeamsBySport. However it does not differentiate itself from the very close sibling v1GetEventsBySportAndDate, so an agent still has to guess which one 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?

'Use returned canonical IDs' and 'never infer coverage from an empty result' are downstream usage hints rather than when-to-use guidance. There is no statement of when this tool is preferred over v1GetEventsBySportAndDate or the other schedule-adjacent siblings, so selection remains implied.

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