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

Annotations already declare readOnly/idempotent/non-destructive/openWorld, so the description isn't needed for the safety profile, but it adds genuinely useful operational context: no background polling or automatic retry, access/delay/metered usage follows the connected account, and one bounded request. These go 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 purpose is front-loaded, but the text is a run-on string of template boilerplate ('Product data or price calculation', 'No wagers, account changes or guarantee of returns') that reads as organizational boilerplate rather than tool-specific information. Those clauses don't clearly earn their 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?

An output schema exists so return values needn't be explained, and annotations carry the safety profile. But for a stats query with nested inputs and 0% schema description coverage, the description leaves the parameters entirely unexplained, leaving a real gap for correct 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 reported as 0% and the description mentions none of the inputs (teamID, year, stats_ids, season_type). With low coverage the description is expected to compensate, and it does not, so it adds no meaning beyond the raw schema structure.

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 season stats for a team' gives a specific verb and resource ('season stats' scoped to a team), which does distinguish it from player-level siblings like v2GetPlayerStatsByTeam. However it never explicitly names or contrasts those alternatives, so differentiation is implicit 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?

There is no when-to-use guidance relative to the many stats siblings (v2GetAllStats, v2GetPlayerStatsByTeam, v2GetStatsByEvent). The 'never infer coverage from an empty result' and 'Affiliate 27 is excluded' notes are constraints, not selection guidance, and nothing tells the agent which scenario this tool is for.

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