getapi_lookup_dns_nameservers

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

No annotations are provided, so the description carries the full behavioral burden. 'Lookup' implies a read-only query, but the description says nothing about authentication, rate limits, or what the response contains. For a network-facing DNS tool with zero annotation coverage, this is a notable gap.

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 short sentence plus the endpoint path, front-loaded with the core operation. There is no wasted text, though the bracket notation is redundant with the tool name.

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 simple one-parameter lookup this covers the essentials, but with no output schema, no annotations, and no parameter documentation, an agent learns nothing about the return shape or the expected domain input format. Minimally viable rather than complete.

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 parameter 'domain' has 0% schema description coverage and no constraints documented in the schema beyond maxLength. The description only echoes that the lookup is 'for a domain', adding no format, normalization, or validation detail that would help an agent construct the value correctly.

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 states a specific operation and resource: a nameserver lookup for a domain, with the HTTP endpoint as supporting detail. It is nearly distinguishable from the sibling getapi_lookup_dns_records, but does not explicitly say how it differs (nameservers vs. general DNS records), leaving that distinction to inference.

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 closely related getapi_lookup_dns_records or any other lookup sibling. No prerequisites, no conditions, no exclusions are stated.

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