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

Annotations already signal idempotentHint=true and destructiveHint=false, so the safety profile is covered. The description adds no behavioral detail beyond 'records', such as whether existing use dates are replaced, merged, or cleared, or whether partial entries are possible. There is no contradiction with annotations, but the description does not meaningfully extend what the structured metadata already provides.

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 a single, front-loaded sentence with no filler or repetition beyond the tool's name. Every phrase adds meaningful content about the operation's domain and per-class scope.

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?

Given the complex nested schema, the many sibling trademark_* tools, and the specialized domain, the description is too sparse to be complete. It does not explain the role of this step in the trademark application workflow, whether entries replace all existing use dates, or how this relates to trademark_set_classes or trademark_submit_to_firm. The presence of an output schema reduces the need to document return values, but the invocation context remains under-specified.

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?

With schema description coverage at 50%, the description partially compensates by clarifying that the entries concern first-use dates and filing basis per class. This adds useful mapping to the otherwise undocumented 'entries' parameter. It still leaves ambiguity around the difference between firstUseDate and firstUseInCommerceDate, and the applicationId wrapper is only described by the schema.

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 clearly states a specific verb ('records') and a specific resource ('first-use dates and the filing basis per class'). It distinguishes the tool from siblings like trademark_set_classes or trademark_set_goods_services by naming the exact data being recorded. However, it does not explicitly call out any sibling alternative, so it stops short of full differentiation.

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 the many related trademark_* tools such as trademark_set_classes, trademark_set_goods_services, or trademark_set_mark. It does not mention prerequisites, sequencing in the trademark workflow, or conditions under which the tool should or should not be called.

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