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

No annotations are provided, so the description carries the full burden of behavioral disclosure. It lists output categories but does not state whether the operation is read-only, what happens with an empty or missing q, or what response shape to expect beyond the three nouns.

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 text is a one-line label rather than a structured tool description; it has no wasted words, but it is under-specified rather than appropriately concise. The resource name is front-loaded, but no actionable usage detail follows.

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?

Even with a small parameter set and an output schema present, the description fails to define what should be passed in q or when to prefer this tool over sibling threat-intel tools. The presence of an output schema reduces the need to document return values, but the invocation semantics remain incomplete.

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 schema exposes a single undocumented parameter q with a default of '' and schema description coverage is 0%. The description never mentions q, so the expected query format—family name, alias, hash, or something else—is entirely unspecified.

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 names the resource ('Malware Family') and the data categories it exposes ('Variants, IOCs, AV detections'), so an agent can infer this is a malware-family lookup tool. It lacks an explicit verb such as 'search' or 'get' and does not differentiate it from sibling threat-intel tools, so it stops short of a 5.

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 no guidance on when to use this tool versus nearby alternatives like threat_actor, botnet_tracker, or ioc_reputation. There is no mention of when-not-to-use or what distinguishes this tool from them, leaving selection entirely to inference.

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