run_newegg_products

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

No annotations exist, so the description carries the full burden. It helpfully discloses the return payload fields and the cost model ('Flat 5 points per successful run'), but says nothing about error behavior for invalid item numbers, rate limits, or auth requirements. Meaningful but incomplete disclosure for a zero-annotation tool.

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?

Two sentences, both earning their place: the first front-loads the action, scope and return fields, and the second discloses the per-call cost. Tight and well ordered with no filler.

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 single-param read tool with no output schema, the description usefully enumerates the returned fields, compensating for the missing output schema. It omits error/edge-case behavior, which keeps it short of full completeness.

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 single 'product' parameter is already documented as 'Item number or URL. e.g. N82E16820147903'. The description repeats the same dual-format hint but adds no additional syntax or format detail, so the baseline 3 applies.

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?

States a specific verb and resource — 'Get one Newegg product by item number or URL' — and enumerates the returned data (price, rating, specifications, images, offers price range, seller). This clearly separates it from sibling list/search tools like run_newegg_products_search and run_newegg_categories_products, though it never names them explicitly.

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 only implied: 'one Newegg product ... by item number or URL' signals a single-item lookup, distinguishing it implicitly from the search and category siblings. However, it never states when to prefer this over run_newegg_products_search, nor any prerequisite such as needing a valid item number.

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