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 states the three audit areas but doesn't reveal whether it performs live network lookups, what the output format is, whether it is read-only, or how it behaves for invalid or nonexistent domains.

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 one line and small in size, but it wastes words by repeating 'Domain Audit' twice ('Domain Audit: Domain audit') and uses an awkward em-dash structure. It is compact but not every token earns its place.

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?

For a composite audit tool spanning ownership, DNS, and security, with no annotations, no output schema, and generic parameter descriptions, this is too thin. An agent cannot predict the return format, prerequisites, failure behavior, or how this tool differs from at least four closely overlapping domain siblings.

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?

Although schema coverage is 100%, both schema descriptions are generic ('Input to process', 'Domain to process') and the tool description adds nothing beyond them. The relationship between the two parameters is ambiguous, particularly what 'input' means relative to 'domain', and the description does not resolve this.

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 a specific verb (audit) and enumerates the covered scope: ownership, DNS, and security. This distinguishes it from single-purpose tools like whois, dns-lookup, or ssl-check. However, it doesn't differentiate from overlapping composite siblings such as domain-report, domain-intel, or domain-due-diligence.

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?

There is no guidance on when to use this tool versus the many overlapping siblings (domain-report, domain-intel, domain-due-diligence, site-audit, whois). No exclusions, alternatives, or selection criteria are mentioned, leaving the agent to guess which domain 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.