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

Beyond the annotations, the description discloses that the item moves on and that details on other items are kept as a message for the business. These are meaningful behavioral side effects, though 'the item moves on' remains vague about the resulting state.

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 short and front-loads the main purpose and trigger. The second sentence is somewhat ambiguous but still compact and relevant.

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?

It explains the triggering situation and main side effect, and annotations cover idempotency and safety. However, with no output schema, the description does not explain what the caller gets back or what 'the item moves on' means for subsequent calls.

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 high at 83%, so the schema already explains most parameters, including key, pass, access_token, and idempotency_key. The description only implicitly reinforces the 'details' parameter as the answer to the business question and adds no further parameter semantics.

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 states a specific action: answering what the business asked about an item, and explicitly ties the trigger to get_item_status needing a detail. It does not clearly differentiate from the sibling send_message, especially since it says details on other items are kept as a message.

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?

It gives a clear trigger: use when get_item_status says a detail is needed. It also describes what happens if invoked on any other item, though it does not explicitly name send_message as the alternative for generic messaging.

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