ncloud_ncs_head_object

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

The description aligns with the readOnlyHint annotation, confirming it is a safe read operation. However, it does not disclose any additional behavioral traits such as authentication requirements, rate limits, or the structure of the returned metadata. Given the annotation already covers the safety aspect, the description adds minimal 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 sentence of 16 words that packs clear purpose and key information without any filler. It is optimally concise and front-loaded with the core action.

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?

The description is adequate for a head operation, explaining the core behavior (get metadata without body). While there is no output schema, the description indirectly indicates what the tool provides. It could be improved by listing typical metadata fields returned, but overall it is sufficient in the context of sibling tools like ncloud_ncs_get_object that handle full downloads.

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?

The input schema provides 100% parameter descriptions (bucketName and key). The description does not add any additional meaning beyond what the schema already offers, so a baseline score of 3 is appropriate.

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 metadata'), the resource ('object in a Ncloud Storage bucket'), and a key differentiator ('without downloading the body'). This effectively distinguishes it from sibling tools like ncloud_ncs_get_object (which downloads the body) and ncloud_ncs_head_bucket (which operates on buckets).

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 usage for metadata retrieval without downloading, but it does not explicitly state when to use this tool over alternatives or when not to use it. There is no mention of prerequisites or exclusion criteria.

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