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

Annotations already declare readOnlyHint=true, destructiveHint=false and openWorldHint=false, so the safety profile is covered. The description adds that the verdict is 'onafhankelijk' and enumerates the returned components, which is useful, but says nothing about market-dependent behaviour, freshness of price/reviews, or source of the reviews.

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 dense sentence with the core purpose front-loaded and no filler. It is appropriately sized, though the trailing enumeration of output components could be trimmed since there is no output schema to disambiguate.

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 two-parameter read tool with annotations covering safety this is nearly adequate, but with no output schema the description should do more to explain the SupplementScore itself (scale, meaning) and the nature of the reviews/prices returned per market. The essentials to call the tool are present; the essentials to interpret it are thin.

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 50%: markt is fully documented with enum values and a default, while product_id has no schema description at all. The description only implies a single product ('één product') and contributes no meaning about the id or how markt affects output beyond what the schema already states.

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+resource: an independent quality verdict ('kwaliteitsoordeel') on a single product, and names the payload (SupplementScore, onderbouwing, reviews, actuele prijs). An agent can distinguish it from a raw lookup, though it never explicitly contrasts itself with siblings like get_product or score_methodologie.

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 when-to-use guidance, no prerequisites, and no mention of alternatives such as get_product (raw data) or score_methodologie (how the score is computed). The agent must infer from the name that this is the scored, opinionated per-product view.

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