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

Annotations already declare readOnly/idempotent/openWorld/non-destructive, so the safety profile is covered; the description goes further by disclosing that Affiliate 27 is excluded, that coverage should not be inferred from empty results, that usage is metered/delayed per account, and that there is no background polling or automatic retry. These are real behavioral traits not present in 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?

Purpose is front-loaded, which is good, but the body is a run-on string of clauses with boilerplate ("No wagers, account changes or guarantee of returns") that reads like generic compliance filler rather than tool-specific information. Some clauses earn their place; others dilute the signal.

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 described, and the exclusion/usage caveats are useful. However, the sole input parameter is unexplained and the tool's relationship to v2GetAffiliates (it is called an alias) is not resolved, leaving an agent unable to know what actually comes back versus the affiliate endpoint.

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 0% for the single nested query.include parameter (enum "regions"), and the description says nothing about it — not what it does, nor that omitting it returns everything. The only hint ("Use returned canonical IDs") concerns output, not input, so the parameter is effectively undocumented.

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 title and first clause state a clear verb+resource ("List all sportsbooks"), but the description then muddies it with "Read-only Product data or price calculation" and "alias for /affiliates" — an agent can't tell whether this returns books, product data, or affiliate records. It also fails to distinguish itself from siblings v1GetSportsbooks and v2GetAffiliates, which likely overlap.

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 explicit when-to-use guidance despite ~80 sibling tools including v1GetSportsbooks, list_affiliates, and v2GetAffiliates. The line "Use returned canonical IDs" is downstream advice, not a selection rule. The agent is left to infer when this alias should be preferred over its siblings.

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