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

With no annotations, the description carries the full disclosure burden. It usefully reveals a cost trait ('Flat 5 points per successful run') and the shape of the returned data, but says nothing about failure modes, rate limits, or whether an invalid URL/ID errors versus returns empty. Real value added, but incomplete 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, zero filler: the retrieval constraint and identifier types come first, the return fields second, and the cost note last. Every clause earns its place.

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-parameter, no-annotation tool with no output schema, the description compensates by enumerating the response fields (price, brand, rating, attributes, variants, seller, other sellers) and disclosing cost. Missing only light guidance on invalid identifiers and selection versus sibling Trendyol tools.

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 coverage is 100% and the schema already documents 'product' as 'Product ID or URL. e.g. 689227641'. The description reinforces this by naming 'contentId', which clarifies the ID namespace, but adds no format constraints or edge cases. Baseline 3 is appropriate when the schema does the heavy lifting.

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 Trendyol product'), the identifier types accepted ('by contentId or URL'), and enumerates the returned fields. The word 'one' and the absence of search/keyword language clearly distinguish it from sibling search and list tools such as run_trendyol_products_reviews and run_trendyol_sellers.

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 single-product retrieval framing and the identifier argument, but the description never states when to prefer this tool over run_trendyol_categories or the reviews/sellers siblings, nor any precondition such as needing a valid contentId first. No alternatives or exclusions are named.

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