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

The annotations already establish readOnlyHint, idempotentHint, openWorldHint=false, and destructiveHint=false, so the safety profile is covered. The description adds useful behavior by saying results are published offer editions returned newest first, but it does not explain pagination or how the limit affects the result set.

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 description is a single efficient sentence with no wasted wording. It is front-loaded with the resource scope and ordering, though that concision comes at the cost of omitting practical details.

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?

This is a simple read-only listing tool with one optional parameter and no output schema, so the description does not need extensive detail. However, it omits limit behavior and pagination semantics, which are relevant for an agent trying to invoke list_changes correctly.

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 schema description coverage is 0%, and the only parameter, limit, is not mentioned in the description. The schema provides type and bounds, but the description does not explain what limit controls or how results are paginated, so it does not compensate for the missing parameter documentation.

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 identifies the resource as every published offer edition and states the ordering, newest first. It is clear enough to understand the tool, but it does not explicitly differentiate list_changes from siblings like list_offers or get_offer.

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?

The description gives no explicit guidance about when to use this tool instead of list_offers, get_offer, check_offers, or list_savings_and_cashback. Usage is only weakly implied by 'offer edition' and 'published'.

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