Reset hostname

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

Annotations already flag this as destructive and idempotent. The description adds valuable context by specifying that both the hostname and PTR record are reset to defaults, which explains what the destructive action affects. No contradiction with the annotations.

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 short and mostly front-loaded. The first sentence conveys the core action and scope. The second sentence adds context but is somewhat redundant with the first, so it is not perfectly concise.

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 tool with a clear destructive annotation and idempotency hint, the description provides enough guidance to invoke the tool correctly. It could mention broader consequences or prerequisites, but none are essential given the straightforward action.

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 parameter virtualMachineId is fully described in the schema with coverage at 100%. The description adds no extra semantics about the parameter, but the schema already carries the necessary meaning, so a baseline score of 3 applies.

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 action ('Reset hostname and PTR record'), the target ('specified virtual machine'), and the outcome ('to default value'). This clearly distinguishes it from related tools like VPS_setHostnameV1, which is for setting a custom hostname.

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 gives clear context: use this endpoint to restore default hostname configuration for VPS instances. It does not explicitly name alternative tools or conditions for when not to use it, but the purpose is specific enough for an agent to select it.

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