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

No annotations are provided, so the description must disclose behavior. It only states it provides a package of services and a price ($0.04 USDC), but does not disclose that it likely triggers a payment or that it aggregates multiple API calls. It also does not mention any side effects or limitations. This is a significant transparency gap for a paid 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?

The description is a single sentence, short, and front-loads the key value proposition (package of services). It is efficient but lacks essential operational details; it is not overly verbose, so it earns a 4 for structure, but not a 5 because it is more of a marketing blurb.

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?

Given 7 parameters, no output schema, no annotations, and no usage guidance, the description is woefully incomplete. An agent cannot know how to fill parameters, what the service actually returns, or when to use it. The complexity is moderate, but the description only lists features and price, leaving all critical information missing.

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 input schema has 7 parameters with 0% description coverage. The description mentions 'адрес, индекс, отделение, стоимость и срок' (address, index, office, cost and time) which loosely maps to parameters like to_address, to_index, from_index, but it does not explain each parameter's meaning or how they are used. It adds no detail beyond what the schema already shows (e.g., default values are clear but not explained). The baseline for 7 params with low coverage is to compensate, but it barely does.

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 states it is a package for 'Доставка Почты России' (Russian Post delivery) including address, index, office, cost, and time in one payment. It clearly indicates the tool covers delivery-related services, but it is vague about the exact action (e.g., compute delivery, get rates) and does not specify the primary function beyond being a bundle. It distinguishes from siblings like pochta_tariff and pochta_delivery_time by implying it combines them, but the verb is 'пакет' (package) which is not an action.

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 alternatives like pochta_tariff or pochta_track. It mentions the package includes cost and time, but does not say 'use this instead of individual tools when you need everything in one payment.' The description is merely a product pitch, not usage guidance.

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