VPS_getDataCenterListV1

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

No annotations are provided, so the description carries the behavioral disclosure burden. The verb 'Retrieve' implies a read-only operation with no side effects, which is adequate. However, it does not elaborate on any other behavioral traits such as authentication or rate limits, making it minimally sufficient.

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 consists of two concise sentences, with the purpose stated upfront. Every word serves a purpose, and there is no redundant or extraneous text.

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 no parameters and no output schema, the description adequately informs the user that the tool retrieves a list of data centers and suggests its usage before VPS deployment. A minor omission is the lack of hint about the return format, but the tool is simple enough that this is not critical.

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 has zero parameters, so schema coverage is 100% trivially. Per guidelines, this yields a baseline score of 4. The description adds no parameter information (none needed), which 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 uses the specific verb 'Retrieve' and resource 'all available data centers', clearly stating what the tool does. It also distinguishes from similar sibling tools like 'hosting_listAvailableDatacentersV1' by explicitly mentioning VPS context, ensuring no confusion.

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 advises using this endpoint 'before deploying VPS instances', providing clear context for when it's appropriate. While it doesn't explicitly exclude alternatives, the VPS namespace and guidance are sufficient given the tool's simplicity.

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