etsy_listing_materials_update

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

No annotations are provided, so the description must carry the burden. It states the action and limit but does not disclose other behavioral traits such as whether the listing needs to be active, validation of materials, or any side effects. The agent has limited insight beyond the basic function.

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, concise sentence that front-loads the action and constraint. No wasted words, though it could include more useful details while remaining concise.

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?

With three required parameters, no output schema, and no annotations, the description is too brief to fully inform an agent. It omits context like return value, prerequisites, or validation rules, leaving the agent to infer from the tool name and schema.

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 only 33%, with only 'materials' having a generic description ('Array of material strings'). The description adds no extra meaning for 'shop_id' or 'listing_id' and merely repeats the max items constraint already present in the schema. It does not compensate for the missing parameter descriptions.

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?

Description clearly states the action ('Replace'), the resource ('all materials on a listing'), and a key constraint ('max 13'). Among siblings like etsy_listing_materials_add and etsy_listing_materials_get, this distinguishes itself as a full replacement operation.

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 implies this tool should be used when you want to set the entire materials list, but it does not explicitly mention when not to use it or suggest alternatives like etsy_listing_materials_add for partial additions.

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