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

The annotations only declare readOnlyHint=false, so the mutation nature is already known; the description does add real value by disclosing the monetary consequence — a storage fee charged for every started day. However, it does not say whether the item returns to inventory, what happens if the lot already has bids, or whether the fee is charged at the moment of withdrawal.

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 sentence with the action verb front-loaded and the cost caveat placed in a parenthetical, so nothing is buried. It is short and efficient, though the parenthetical fee note is packed into the same clause as the action rather than separated.

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 mutating auction tool with no output schema, no parameter descriptions and only a readOnlyHint annotation, the description leaves important gaps: destination of the withdrawn item, behavior with existing bids, and the meaning of 'count'. Only the storage-fee consequence is covered.

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 0%, so the description carries the full burden, yet it only loosely implies that 'лот' maps to item_id and says nothing at all about the optional 'count' parameter (e.g. quantity when withdrawing a stack) or about the item_id format. An agent must guess the meaning of half the inputs.

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 a concrete verb ('Забрать' = retrieve/take back) and a concrete object ('свой лот' — your own lot) scoped to the 'Мои вещи' page, which clearly separates it from game_auction_sell, game_auction_buy and game_auction. It is specific enough that an agent knows it is a withdrawal-of-own-listing operation, though it never names those siblings explicitly.

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 only implied: the phrase 'свой лот со страницы «Мои вещи»' tells the agent it applies when you already have a lot listed, but there is no explicit when-to-use/when-not guidance, no preconditions (e.g. whether bids exist on the lot), and no pointer to alternatives such as cancel-vs-sell flows.

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