domains_updateDomainNameserversV1

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

With no annotations provided, the description carries the full burden. It discloses the risk of misconfiguration ('domain being unresolvable or unavailable'), which is a key behavioral trait. However, it does not mention other behavioral aspects like authentication requirements, operation speed, or whether changes are irreversible, leaving some gaps.

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 three sentences: action, warning, and usage advice. It is concise, front-loaded with the primary action, and contains no filler. Every sentence adds 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?

The description warns of risks and states the use case, which is helpful. However, it does not describe the return value (no output schema), explicitly note required parameters, or explain behavior when optional parameters (ns3, ns4) are omitted. This leaves some operational uncertainty for the agent.

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 input schema covers all 5 parameters with clear descriptions (e.g., 'Domain name', 'First name server'), achieving 100% coverage. The description adds no additional semantic value beyond what the schema provides, so a baseline score 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 'Set nameservers for a specified domain' and 'configure custom DNS hosting', which directly and specifically describes the tool's action and resource, distinguishing it from siblings like DNS_* tools and other domains tools.

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 provides explicit when-to-use guidance: 'Use this endpoint to configure custom DNS hosting for domains.' It also includes a warning about improper configuration, which aids decision-making. However, it does not contrast with alternatives (e.g., DNS_updateDNSRecordsV1) or provide explicit when-not-to-use scenarios.

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