subnet_calculator

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

The annotation readOnlyHint=true already communicates that this is a safe, non-mutating operation. The description adds no behavioral detail beyond that, such as what inputs are accepted, how the calculation is performed, or any limitations. It fails to add context beyond the annotation.

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 short phrase with no wasted words, but it is under-specified. It merely restates the tool's name in Chinese and does not earn its place by adding substantive information. It is more a label than a functional description.

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?

While the tool is simple and has rich structured context (annotations, full schema coverage, output schema), the description alone is too sparse to fully guide an agent. It omits details such as the type of subnet calculation performed, the mask format, or expected outputs. The combination of description and schema still leaves gaps for correct invocation.

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?

Schema description coverage is 100%, with 'ip' documented as 'IP 地址' and 'mask' as '子网掩码'. The description '子网换算工具' adds no additional meaning to the parameters, but the schema already provides adequate baseline documentation. The mask format (e.g., CIDR vs dotted decimal) remains ambiguous, though the schema baseline of 3 applies here.

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 '子网换算工具' states the tool performs subnet conversion, but it is essentially a translation of the tool name. It does not specify what the conversion produces (e.g., network address, broadcast, usable IP range) or distinguish it from other network utilities, leaving the purpose somewhat vague.

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, no context, and no exclusions. It simply names the operation without explaining scenarios where it would be appropriate or inappropriate.

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