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

No annotations are provided, so the description carries the full burden. It discloses content scope well, but says nothing about the return shape (single text blob vs. structured fields), whether the data is static or fetched live, or whether it aggregates several pages. For a zero-parameter informational tool that is a moderate but not severe gap.

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?

A single front-loaded sentence opens with the resource and then enumerates coverage; nothing is redundant. The long comma-separated tail is dense but each item adds information about retrievable topics.

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 zero-param, annotation-free info tool with no output schema, the description covers what content an agent can expect. The only material omission is the return format (plain text vs. structured), which would help the agent decide how to consume the result.

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?

The tool takes no parameters, so there is nothing for the description to disambiguate; baseline 4 applies. The schema is an empty object and the description correctly implies a no-argument call.

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 names the resource ('Контакты и условия магазина') and enumerates the concrete topics covered (phone, email, hours, delivery, payment, returns), which clearly separates it from siblings like usilitel_articles or usilitel_products_search. It lacks an explicit verb (e.g. 'returns/gets'), but the resource is unambiguous.

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?

The topic list implies when to call it (contact, delivery, payment, return questions), but there is no explicit statement of when to use it versus usilitel_page_text or usilitel_content_search. Usage must be inferred from the enumerated content.

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