get_dns_cache_statistics

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

The description states 'Gets', which aligns with the readOnlyHint annotation, but it adds no behavioral context beyond what annotations already declare. It does not disclose what statistics are included, whether the operation is safe, or any performance implications. With annotations covering the read-only and idempotent nature, the description adds minimal extra value.

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 sentence with no extraneous words, which is concise. However, it is under-specified and lacks necessary context, making it less effective than a description that balances brevity with clarity. It is not overlong but does not earn a higher score due to its minimalism.

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 the tool's low complexity (one optional parameter) and the presence of an output schema, the description could be relatively simple. However, it omits guidance on the device parameter and usage scenarios, leaving a significant gap. The output schema may describe return format, but the description still fails to provide sufficient context for an agent to select and invoke the tool correctly.

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 one optional parameter 'device' with 0% description coverage. The description does not explain what 'device' refers to (e.g., target device identifier, hostname) or how it affects the operation. Since the schema provides no meaningful details and the description fails to compensate, the agent is left without essential parameter semantics.

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 'Gets DNS cache statistics' uses a specific verb and resource, clearly indicating it retrieves statistical data about the DNS cache. It is distinct from sibling tools like get_dns_cache (which likely returns the cache contents) and get_dns_settings, though it does not explicitly contrast itself. Overall, the purpose is clear and somewhat differentiated.

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?

No usage guidance is provided. The description does not mention when to use this tool over alternatives, any prerequisites, or specific scenarios. Sibling tools such as get_dns_cache or flush_dns_cache exist, but the description offers no comparison or contextual advice.

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