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

Annotations already declare readOnlyHint, idempotentHint, destructiveHint=false and openWorldHint=false, so the safety profile is covered structurally. The description adds value beyond that by stating the data is real-time and includes gross/retail prices and stock quantities — i.e., what the agent will actually observe. It omits any note on result size, pagination, or whether the catalog is filtered to 'standard' items only in a way that excludes configurable products.

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?

Two tight sentences, front-loaded with the core scope (in-stock, standard, real-time price and inventory). The content is fully duplicated across the Hungarian and English sentences, which is presumably deliberate for bilingual callers but is technically redundant text.

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-parameter, read-only listing tool with no output schema, the description is nearly sufficient: it tells the agent what entities come back and which fields matter (gross price, stock). The remaining gap is that it does not describe result shape, ordering, or size, which the absent output schema would otherwise have to carry.

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?

There are zero input parameters, which normally gives a baseline of 4. The description does clarify the implicit semantics — no filtering arguments exist because the tool always returns the whole ready-stock set with prices and stock — but it never explicitly says 'takes no arguments / returns everything', so it adds only modest meaning on this dimension.

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 a specific verb ('Listázza'/'Lists') and a precisely scoped resource: only currently in-stock ('RAKTÁRON') standard windows/doors and accessories. It also says what the listing carries (real-time gross price and stock level), which separates it from the quote-oriented siblings. It stops short of naming a sibling or explicitly contrasting with get_price_estimate/request_quote, so it is clear but not maximally differentiated.

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 emphasis on 'ready-stock' and 'real-time' signals this is the browse/availability tool to consult before quoting, which is a meaningful implicit scope restriction. However, there is no explicit 'use this when...' or 'do not use this for pricing a specific configuration — use get_price_estimate instead' routing, and no prerequisites are stated.

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