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

Annotations already declare the operation read-only, idempotent, and non-destructive, so the safety profile is covered. The description adds value by explaining that the returned documents are URLs with read dates and by enumerating the document categories, which is useful behavioral context beyond the annotations.

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?

The description is short and front-loaded with the main document types, but it is awkwardly worded and partially redundant: the initial list overlaps with the parenthetical list. It could be tightened and made clearer without adding length.

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?

The output schema exists and annotations cover read-only behavior, but key invocation context is still missing, especially the meaning of decision_id and how gtin and market scope the document set. For a low-parameter tool, this is close to viable but not complete enough for reliable 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%, so the description needed to explain gtin, market, and decision_id, but it only restates that decision_id is required. It does not define what decision_id represents or clarify how gtin and market affect which documents are returned.

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 identifies the resource as documents on a product record and enumerates concrete document types such as safety assessment, certificate of analysis, and safety data sheet, along with URL and read date. It clearly distinguishes this as a document retrieval tool, though it does not explicitly name sibling alternatives or use an explicit verb like 'retrieves'.

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?

The description gives no guidance on when to use this tool versus siblings like get_safety_label or get_item, and it does not mention any exclusions or alternative tools. The only usage-related signal is that decision_id is required, which is a call prerequisite rather than contextual guidance.

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