ncloud_serverless_list_engine_versions

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

Annotations already declare readOnlyHint=true, and the description adds the 'ascending' ordering and the endpoint path, which are helpful behavioral details. However, it does not describe the return format, pagination, or any other operational characteristics beyond a simple list.

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?

A single, front-loaded sentence that conveys the action, resource, endpoint, and ordering with no redundancy. Every element earns its place and there is no fluff.

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 listing tool, the description is almost complete. It supplies the resource type and ordering, though it omits any hint of what the returned data looks like (e.g., list of version strings). Given no output schema, this is a minor gap but not a blocker for correct invocation.

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 is empty (0 parameters), so there is nothing to document. The baseline for 0 parameters is 4, and the endpoint inclusion reinforces that no parameters are needed. No additional param context is required.

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 states a specific verb ('List'), the exact resource ('MySQL engine versions available for Cloud DB Serverless'), and the associated endpoint. It clearly distinguishes this from siblings like ncloud_ses_get_versions or ncloud_cdss_get_kafka_versions, which serve different engines or products.

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 product and resource scoping make the intended use obvious: when an agent needs MySQL engine versions for Cloud DB Serverless. It does not explicitly name alternatives or exclusions, but the description is unambiguous enough that no alternative would be considered for this specific resource.

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