get_inventory

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

With no annotations provided, the description carries the full burden of behavioral disclosure, but it only states the high-level action. It does not mention pagination behavior, status filtering defaults, required authentication, or what the returned inventory response contains.

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 concise and has no fluff, but it is under-specified given the lack of parameter documentation and annotations. The single sentence is easy to parse, yet it does not carry enough information to be considered appropriately sized for this endpoint's complexity.

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 four parameters, no annotations, no output schema, and no parameter descriptions, this tool definition is incomplete. The description gives only the core purpose; an agent would still lack guidance on pagination, status values, seller identification, and response shape.

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 must compensate for the four undocumented parameters, but it only weakly hints that 'username' refers to the seller. It does not explain page, perPage, status, or how these parameters affect the returned inventory.

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 action (list) and the resource (a Discogs seller's marketplace inventory), so an agent can understand the tool's basic purpose. It does not explicitly contrast it with get_listing or other inventory-related siblings, but the plural 'inventory' against get_listing's singular scope provides some implicit 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?

There is no guidance about when to choose this tool over alternatives such as get_listing, search_database, or get_orders. The description does not state what kinds of requests are appropriate for this endpoint, nor does it mention any exclusions or alternative tools.

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