ncloud_update_rule_group

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

The description adds no behavioral context beyond the annotations. It does not explain whether unspecified fields are preserved or reset, whether re-applying the same update is truly idempotent, or any permission requirements. Annotations already declare idempotent and non-destructive, but the description adds no additional insight.

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 with no redundant words or repetition. It is concise and directly conveys the action and target, earning a perfect score for conciseness.

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 rich schema and annotations, the minimal description is adequate but leaves gaps. It does not explain the update semantics (e.g., partial vs. full replacement), return values, or error scenarios. For a 6-parameter mutation tool, this level of completeness is mediocre but not insufficient.

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%, so all six parameters are fully documented in the input schema. The tool description itself adds no parameter information, but with full schema coverage, the baseline 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 'Update an existing Cloud Insight event rule group' uses a specific verb ('Update') and resource ('rule group'), clearly distinguishing it from create/delete/list siblings. However, it does not elaborate on specific aspects being updatable, so it is clear but slightly generic.

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 for when to use this tool versus alternatives. It does not mention that this is the appropriate tool for modifying an existing rule group in contrast to ncloud_create_rule_group or ncloud_delete_rule_group, nor does it note any prerequisites.

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