zyxel_create_vlan

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

With no annotations, the description must disclose behavioral details itself, but it only says 'Create a new VLAN.' It does not state whether creating a duplicate ID fails, whether it modifies the running config or startup config, or if any special privileges are required. The mutation effect is implied but not detailed.

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 five-word sentence that directly states the tool's purpose, with no fluff or redundancy. However, this brevity comes at the cost of missing contextual detail, though that is scored in other dimensions.

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 tool with no annotations and no output schema, the description is too sparse. It lacks information about expected behavior, error conditions, and how it fits into the broader workflow (e.g., needing to connect first). This makes it incomplete for an agent to confidently invoke it in varied situations.

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?

Both parameters are already described in the input schema, with vlanId having a range and name having a type. The description adds no further meaning to the parameters, so it relies entirely on the schema, which meets the baseline.

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 'Create' with the resource 'VLAN', clearly distinguishing this from sibling tools like zyxel_show_vlan (which only displays VLANs) and configure tools that modify ports. It is unambiguous about the tool's function.

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 such as an active connection or existing VLAN configurations. It simply states the operation, leaving the agent to infer usage context from the tool name.

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