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

Annotations already declare readOnlyHint, idempotentHint, non-destructive and closed-world, so safety is covered. The description adds useful scope boundaries beyond that: free-shipping thresholds apply EU-only, customs rules apply outside the EU, and coverage spans 191 non-EU destinations — telling the agent what the answer will and will not cover.

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 highest-value item (shipping costs and delivery times) front-loaded, no filler. The trailing clause about 'public profiles where Gameshop Enter can be verified' is marginally tangential but still describes retrievable content.

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?

With no parameters, no output schema and thorough annotations, the only thing the description must convey is what content comes back — and it enumerates that fully. Nothing an agent needs to decide to call it is 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 tool takes zero parameters, so the baseline is 4. The description usefully clarifies that this single call returns the whole policy catalogue with no per-country filtering argument required.

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 enumerates the concrete resource contents (shipping costs, delivery times, customs rules, return policy, payment methods, languages), so an agent can tell this is a static store-policy lookup rather than a product or quote tool. It never states a verb such as 'returns' or 'retrieves', but the resource is unambiguous and clearly distinct from the product/quote siblings.

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?

No explicit 'use this when...' statement and no reference to the sibling tools, so the agent must infer that this is the tool for shipping/returns/payment questions. The content enumeration makes that inference easy, which matches the 'implied usage' level rather than full routing guidance.

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