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

Annotations already declare read-only, idempotent, and non-destructive behavior. The description adds valuable behavioral detail about pagination: page/limit usage, the 30-record cap, and the pagination object fields to inspect for continuation. This goes beyond what the annotations provide.

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 concise and front-loaded: the core purpose appears in the first sentence, with pagination details following. The initial repeated title line is slightly redundant, but every other sentence earns its place and the overall length is well controlled.

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?

For a simple paginated list endpoint with full schema coverage and an output schema, the description covers what an agent needs: what it retrieves, the customer scope, pagination mechanics, and how to determine whether more pages exist. No critical behavioral gap remains.

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 100%, so the schema fully documents id, page, and limit. The description reinforces pagination semantics and the 30-record limit, but it does not add substantial new meaning beyond what the schema already states. This is the appropriate baseline for high coverage.

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 scope: 'Retrieve review history for one customer in the project.' This clearly distinguishes it from broader review endpoints like listReviews by anchoring it to a single customer. The resource and action are unambiguous.

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 clearly conveys that this is for one customer's review history, which gives the agent context for when to choose it over broader list tools. It does not explicitly name alternatives or exclusions, but the customer-scoped wording provides sufficient guidance for a list endpoint with obvious siblings.

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