ncloud_set_nat_gateway_description

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

Annotations already indicate idempotentHint=true and destructiveHint=false, and the description aligns with these by saying 'Set or update.' However, the description does not add extra behavioral context, such as what happens if the instance does not exist, validation rules, or whether the update is immediately effective. With annotations, this is adequate but not enhanced.

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, front-loaded with the action, and contains no extraneous information. Every word earns its place, making it highly concise and well-structured.

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 simple, non-destructive update operation with idempotency hints and fully documented parameters, the description is largely complete. It does not describe return values, but no output schema exists, and the operation's outcome is self-evident. Missing details like error scenarios or prerequisites are not critical for this straightforward 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?

The input schema provides 100% parameter description coverage ('NAT Gateway instance number' and 'New description for the NAT Gateway'). The tool description does not add any additional semantic detail beyond what is in the schema, so it meets the baseline for good schema coverage.

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 ('Set or update') and the resource ('description of a NAT Gateway instance'). It is specific and unambiguous, distinguishing it from read-only or deletion tools for the same resource. The verb+resource structure is precise.

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 when to use the tool (when you need to set or update a NAT Gateway description), but it does not explicitly mention alternatives or exclusions. Sibling tools like ncloud_get_nat_gateway_detail or ncloud_list_nat_gateways are not referenced, so the guidance is implied rather than stated.

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