ncloud_kms_get_latest_use_info

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

The readOnlyHint annotation already indicates a safe read operation. The description adds no further behavioral context, such as what 'usage information' includes, whether it returns a single record, or if any special permissions are needed. It does not contradict the annotation, but provides no extra transparency.

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, clear sentence with no redundant wording. It front-loads the action and resource effectively and is appropriately sized for the tool's simplicity.

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's simplicity (one parameter, no output schema) and the readOnlyHint annotation, the description is minimally sufficient. However, it lacks details about what 'usage information' consists of, which could be critical for an agent deciding if this tool meets the user's need.

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 100% (keyTag is well described as 'unique identifier derived from key name'). The description does not add any additional meaning to the parameter beyond echoing it ('specific KMS key'), so the baseline of 3 applies.

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 states the action ('Get') and the resource ('most recent usage information for a specific KMS key'), which is specific and distinct from other KMS tools like get_key_info or get_key_activity_logs. It does not explicitly compare with siblings, but the resource is unique enough to avoid confusion.

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 guidance is provided on when to use this tool versus alternatives, such as ncloud_kms_get_key_activity_logs or ncloud_kms_get_key_info. The description only states what it does, leaving the agent to infer usage from the tool name.

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