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

Annotations already declare readOnlyHint=true and openWorldHint=true, so the safety profile is covered. The description adds nothing behavioral beyond that: no note on storefront relevance, locale dependence, or whether a full/partial record is returned.

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 short sentence with no wasted words and the key scope front-loaded. It is concise to the point of being under-specified rather than padded.

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?

An output schema exists, so return values need no prose. But for a 3-parameter lookup with 0% schema coverage and no usage context, the description is too thin to ensure correct selection or invocation.

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% for three parameters. 'id' is guessable as the product identifier, but the cryptic 'l' and 'cc' (likely language and country) are completely unexplained in both schema and description, leaving required invocation semantics undocumented.

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 the resource (PlayStation Store product/edition) and signals a single-item lookup, which distinguishes it from search/browse siblings. However, 'details' is a weak verb and it never explicitly contrasts with tools like playstation_search or playstation_concept.

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?

It implies retrieval of one product's details but gives no when-to-use guidance, no prerequisites, and no routing to alternatives such as playstation_search for discovery or playstation_deals for pricing. The agent must infer usage entirely from the name.

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