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

The readOnlyHint annotation already declares this is a safe read. The description adds the resource granularity (per warehouse and size) and the backing endpoint, which is useful context, but it says nothing about pagination, auth, or volume limits for a potentially large product list.

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 with the resource description front-loaded and the endpoint as a compact trailing note. No waste.

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 read-only 2-parameter tool with no output schema, the description adequately conveys what is returned (quantities per warehouse and size). Minor gap: no note on expected number of results or whether all products must exist.

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 coverage is 100%, so both parameters (products, ident_type) are already fully documented including the enum meanings. The description adds nothing beyond what the schema provides, so the baseline 3 is appropriate.

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?

States a specific verb (Get) and resource (stock quantities per warehouse and size for products), which clearly distinguishes it from siblings like search_products or get_orders. It does not explicitly name a sibling alternative, but the purpose 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?

Usage is implied by the resource name - you call this when you need stock levels. There is no explicit when/when-not guidance and no mention of alternatives such as search_products for finding products before querying stock.

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