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

Annotations already declare readOnlyHint, idempotentHint and destructiveHint=false, so safety is covered. The description adds genuine value beyond them by disclosing the two possible result shapes (safe failure details, or the added item and its link), signaling this is an asynchronous outcome check rather than a plain read.

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?

Two sentences, zero filler: the purpose and return shape come first, the parameter sourcing last. Nothing is repeated from the schema or annotations.

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 no output schema, the description appropriately summarizes the return payload, and annotations cover the safety profile. The remaining gap is that it never indicates whether the action resolves immediately or must be re-polled, which matters for a status-check tool.

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 0% for the single activityId parameter, and the description compensates by naming the exact sibling tools that mint that ID. It does not describe the ID's format or lifetime, but the origin guidance is the meaningful missing piece and is supplied.

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?

States a specific verb and resource: 'check the status of an owned wardrobe image action', and further defines what the result contains (failure details vs. added item and link). No sibling in the list provides an activity/status lookup, so an agent can identify this tool unambiguously.

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?

Explicitly tells the agent where the required activityId comes from ('add_wardrobe_item_from_image or create_image_upload'), which routes it correctly from the two producing siblings. It does not state any when-not-use condition or polling cadence, so it falls short of the highest bar.

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