ncloud_upgrade_mysql_version

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

With no annotations, the description carries the full burden for behavioral disclosure, but it only says 'Upgrade'. It does not mention possible downtime, irreversibility, version compatibility steps, or any operational side effects. This is a significant gap for a mutation tool.

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, front-loaded sentence with no redundant words. It efficiently states the tool's core purpose in a clear structure.

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 mutation tool with no annotations and no output schema, this description is under-specified. It lacks operational context such as downtime, prerequisites, version constraints, or response format, leaving the agent without critical information to safely invoke the 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 schema covers 100% of the parameters with descriptive text, so the baseline is 3. The description itself adds no parameter-level details beyond what the schema already provides, but the schema does a good job explaining fields like isMajorVersionUpgrade.

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 ('Upgrade') and the target resource ('DB engine version of a Cloud DB for MySQL instance'). It distinguishes this tool from siblings that upgrade other resources (e.g., ncloud_ses_upgrade_version, ncloud_nks_upgrade_cluster) by specifically naming MySQL instances.

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 provides no guidance on when to use this tool versus alternatives, nor does it mention prerequisites like the need to specify an instance number or image product code. The only hint is the verb 'Upgrade', but there is no explicit context or exclusion.

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