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

Annotations declare readOnlyHint=false and openWorldHint=true, yet the description says nothing about why a "search" endpoint is flagged as non-read-only, nor about data scope, quotas, or what the call consumes. The word "Search" sits in tension with readOnlyHint=false and the description does not resolve it, so it adds no behavioral context beyond the annotations.

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 one short line, so there is no padding, but the sentence does not earn its place — it merely echoes the tool name and provides no front-loaded information about scope or behavior. Brevity here reflects under-specification rather than discipline.

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 4-parameter, zero-required, open-world search tool with no output schema, the description says nothing about the return payload, result limits, or the fact that date range and keyword can be combined. Everything useful lives in the schema; the description leaves the agent to guess at result semantics.

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%: endDate, startDate, keyword, and productIds are all documented in the schema with format and language hints. The description adds no parameter meaning, so the baseline 3 for fully-covered schemas applies. It also doesn't explain how keyword and productIds interact (both are optional and presumably combine).

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 is a near-verbatim restatement of the title/name: "Ozon Intelligence MP: ozon/product Search API." It does imply the verb (search) and resource (Ozon products), but adds nothing an agent couldn't derive from the name, and gives no differentiation from the many Ozon siblings (nexscope_ozon_product_search, nexscope_data_sr_ozon_product_detail_search, nexscope_data_mp_ozon_category_products, etc.).

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?

No when-to-use guidance, no prerequisites, and no mention of the alternative Ozon search tools in the sibling list. The agent is left to infer usage entirely from the name and the schema fields.

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