Snapshot DNS records

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

No annotations are provided, so the description must disclose behavior. It adds value by specifying the method ('DNS-over-HTTPS') and listing all record types. However, it omits important details such as the output format, potential truncation for large zones, error responses, or rate limiting.

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 exceptionally concise: two sentences with no filler. The first sentence front-loads the action and resource, and the second briefly lists use cases. Every sentence contributes value.

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 simplicity of the tool (1 parameter, no output schema, no annotations), the description covers the essential purpose and usage. It could be improved by noting the format of the returned snapshot (e.g., an object with record arrays) or any limitations (e.g., only public DNS). Current coverage is adequate but not exhaustive.

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 coverage is 100% (only one parameter, domain, with a description). The description does not add meaningful semantics beyond the schema—it merely repeats the parameter name and gives an example ('example.com'). Baseline of 3 is appropriate.

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 clearly states the action ('Pull'), the resource ('full DNS snapshot'), and lists the specific record types (A, AAAA, MX, etc.). It is well-differentiated from sibling tools (e.g., check_headers, domain_rating) which cover unrelated aspects like email headers or domain authority.

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 mentions common use cases ('migrations, deliverability, and handoffs'), providing clear context for when to use. However, it does not explicitly state when not to use the tool or mention alternatives, though no direct alternative exists among siblings.

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