Inspect dangling DNS aliases

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

Annotations already cover readOnly, idempotent, non-destructive and openWorld, so the safety profile is largely handled. The description adds genuinely useful behavioral context beyond that: results are unresolved-alias 'indicators' rather than confirmed findings, and they require manual verification, which shapes how an agent should interpret and act on the output.

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?

One sentence, front-loaded with the action and resource, followed immediately by the output interpretation. No filler, no redundancy with the title or annotations.

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?

With an output schema present, the description need not explain return values, and annotations already carry the safety profile. It conveys purpose, output meaning, and the manual-verification caveat; the main residual gap is the input domain semantics, which is left entirely to the schema.

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 single `domain` parameter has 0% schema description coverage, and the description never clarifies whether it expects an apex domain or a specific hostname, nor whether CNAME chains are followed. The only hint is the mention of 'CNAME targets', which does not meaningfully compensate for the schema gap.

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?

States a specific verb (inspect) and resource (CNAME targets / dangling DNS aliases) and names the class of output (unresolved aliases as takeover indicators). It is clearly distinguishable from generic siblings like dns_enumeration or wildcard_dns_analysis by focusing on subdomain-takeover detection, though it does not name any sibling explicitly.

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 phrase 'takeover indicators requiring manual verification' implies a security-assessment use case, so an agent can infer when this tool fits. However, there is no explicit when-to-use guidance, no stated prerequisites, and no pointer to how this differs from dns_enumeration or wildcard_dns_analysis, which an agent choosing between DNS tools would need.

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