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

Annotations declare readOnlyHint=false and openWorldHint=true, yet the description adds nothing about why a "Detail" call is not read-only, what permissions or quotas apply, or what happens with the date window. It does not explicitly contradict the annotations, but it is a bare label with zero behavioral context.

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?

It is a single short line, but that brevity reflects under-specification rather than economy: there is no front-loaded statement of what the call retrieves or returns. Every word duplicates the title.

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 four-parameter endpoint with no output schema and no annotations covering semantics, the description supplies nothing about return contents, date-window behavior, or how FBS inclusion affects results. An agent could not judge from this text alone whether the tool meets its need.

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%, with productId, startDate, endDate, and includeFbs all documented in the schema itself, including the YYYY-MM-DD format and the single-ID constraint. The description contributes no additional parameter meaning, but the baseline of 3 applies when the schema carries the load.

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 only restates the title/name: "Ozon Intelligence MP: ozon/product Detail API." It implies retrieving a single Ozon product, but never says what data is returned or how it differs from close siblings such as nexscope_ozon_product_detail or nexscope_data_mp_ozon_product_search. That makes it a near-tautology rather than a distinguishable purpose statement.

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?

There is no guidance on when to use this tool versus the many sibling Ozon and cross-marketplace product-detail tools, and no prerequisites or exclusions are stated. The date-range parameters hint at a statistics endpoint, but the agent must infer that from the schema alone.

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