get_fba_inventory_details

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

With no annotations, the description must bear the full burden of behavioral disclosure. It only states the output content but does not mention read-only nature, pagination, error scenarios, or any operational traits. For a data retrieval tool, this is insufficient.

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 two sentences long, which is concise. The first sentence efficiently lists the breakdown details. The second sentence is a bit generically repetitive but still short.

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 tool has 2 optional parameters and no output schema, the description adequately conveys the tool's purpose. However, it does not mention response format or how to interpret the data, leaving some gaps for an agent.

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 100% (both parameters described in schema). The description does not add additional meaning beyond 'filter by', but it also does not mislead. Baseline 3 is appropriate as the schema carries the parameter documentation.

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 identifies the tool as providing detailed FBA inventory information, listing specific breakdowns (reserved quantities, unfulfillable reasons, researching quantities). It distinguishes itself from sibling tools like get_inventory_summary by focusing on deeper insight.

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 guidance on when to use this tool versus alternatives (e.g., get_inventory_summary, get_inventory_ledger). The phrase 'provides deeper insight' offers an implied context, but no when-not or sibling comparisons are provided.

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