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

Annotations already declare that the operation is read-only, open-world, idempotent, and non-destructive. The description adds useful non-annotation context by stating the per-record cost ('1 point per returned record') and the fields returned, but it omits pagination behavior, ordering, or any rate-limit/auth considerations.

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 two tight sentences, front-loaded with the core purpose and followed by the per-record cost. There is no filler or redundant restatement of the name.

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 read-only tool with rich annotations and 100% schema coverage, the description is largely complete: it states the resource, returned data, and cost. Minor omissions around pagination/ordering behavior are already partly covered by the schema.

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 input schema already documents seller, max_items, and start_page clearly. The description adds no parameter-specific nuance beyond the schema, so the baseline score of 3 is appropriate.

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 gives a specific verb and resource: get feedback reviews received by an eBay seller. It also names the returned fields (rating, reviewer, related item), making the tool distinguishable in concept from seller-info or product-review siblings, though it does not explicitly name those siblings.

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?

Usage is implied by the purpose: an agent should use this when it needs feedback reviews for an eBay seller. However, there are no explicit alternatives, exclusions, or conditions such as when to prefer run_ebay_seller vs run_ebay_product_reviews vs run_ebay_seller_items.

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