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

With no annotations provided, the description carries the full burden of explaining behavior. It discloses only that the tool gives 'DNS delegation info' from Hurricane Electric – essentially the domain of the tool. It does not state whether this is a read-only lookup, what the query parameter represents, any rate limits, or what the response contains. The minimal phrasing provides some context but falls short of transparent behavior.

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 extremely brief – a single phrase with no fluff. However, brevity is not the same as conciseness; it lacks the necessary detail to be effectively front-loaded. It is not verbose, so it avoids losing value through wordiness, but it is under-specified. A short, clear sentence would earn a higher score.

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?

Although an output schema exists slash which reduces the need to document return values, the description is too incomplete for a tool with one parameter and zero schema descriptions. The agent cannot confidently determine what to pass as 'q' or what behavior to expect. The low complexity (one optional parameter) makes this a simple tool, but the description still fails to provide the minimal context needed 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 0%, and the description does not mention the 'q' parameter at all. The only hint is 'DNS delegation info,' which might imply the parameter is a domain, but that is not explicit. The agent receives no information about the expected format, values, or meaning of the parameter, making correct invocation difficult.

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 'DNS Graph (HE): Hurricane Electric DNS delegation info' identifies a specific resource (DNS delegation information) and source (Hurricane Electric), but lacks an explicit verb. It reads as a title rather than a sentence, so an agent can infer the tool provides delegation info but cannot be certain of the action (e.g., query, retrieve). It does distinguish from generic 'dns' tools by naming HE, but the vagueness prevents a higher score.

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 guidance is given on when to use this tool versus sibling tools like dnsquery, dnsrecon, or dnsprop. There is no mention of scenarios, prerequisites, or alternatives. The agent is left to guess which DNS-related tool fits the task.

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