ncloud_get_regions

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

The readOnlyHint: true annotation already establishes this is a safe read operation, and the description 'List all available Ncloud regions' is consistent with that. However, the description adds no extra behavioral context beyond the annotation, such as return format, ordering, or any potential limits.

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 with no filler. It is front-loaded and captures the essential purpose in just five words.

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?

For a zero-parameter, read-only list operation, the description covers the essential purpose. However, given the presence of related tools like ncloud_get_zones and ncloud_get_current_region, a brief note on what the output includes (e.g., region codes or names) would enhance completeness, though it is not strictly necessary.

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 tool has zero parameters, so the input schema is trivially complete. The description does not need to explain parameter semantics, and no additional detail would add value for a parameter-less call.

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 tool's function with a specific verb ('List') and resource ('all available Ncloud regions'). It is unambiguous and easily distinguishable from sibling tools like ncloud_get_zones or ncloud_get_current_region, which operate on different resources.

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 the tool should be used when an agent needs to retrieve all available Ncloud regions, but it provides no explicit guidance on when not to use it or mentions alternative tools such as ncloud_get_zones or ncloud_get_current_region. This is a minor gap for a simple discovery function.

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