hcloud_list_gaussdb_datastores

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

Annotations already declare readOnlyHint=true, idempotentHint=true, and openWorldHint=true, so the safety profile is covered. The description adds nothing beyond that — it does not say the listing is scoped by the required region, whether results are paginated or truncated, or what an entry represents.

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?

One sentence, front-loaded with the verb and resource, with no filler. It is efficient but borders on under-specification given the crowded gaussdb sibling set.

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 one-parameter read tool with full annotation coverage and no output schema, the essentials are present. However, nothing tells the agent how this differs from hcloud_list_gaussdb_flavors or hcloud_list_rds_datastores, which is the main ambiguity an agent would face.

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?

There is a single parameter with 100% schema description coverage, so the schema already carries the parameter documentation and the baseline of 3 applies. The description does not add meaning about how region affects the returned versions, though little is needed for one parameter.

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 and resource ('List available GaussDB (openGauss) DB engine versions'), and the parenthetical clarifies the engine family. It does not distinguish this from the closely named sibling hcloud_list_gaussdb_flavors or from hcloud_list_rds_datastores, so an agent must infer the difference between engine versions, flavors, and RDS datastores.

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?

There is no when-to-use guidance, no prerequisites, and no mention of alternatives. The agent is left to infer that this is a pre-creation lookup for engine versions rather than a flavor or instance listing, which is exactly where the sibling tools overlap.

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