dnsUpdateRecord

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

No annotations are provided, so the description carries the full burden for behavioral disclosure. It only says 'update an existing DNS resource record', which conveys mutation but does not explain overwrite behavior, whether the existing record is replaced or merged, authentication needs, rate limits, or response behavior. The linked API reference is useful but not part of the description's substance.

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 a single sentence with no filler and includes a reference link. The word 'existing' adds meaningful scope, and the structure is front-loaded with the core action and resource. It is concise, though the brevity comes at the cost of substantive guidance.

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 mutation tool with six parameters, no output schema, and no annotations, the description is too minimal. It does not clarify where rrid comes from, what the response will contain, or what side effects the update has. The schema covers parameter meaning but not the operational context an agent needs to call the tool confidently.

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 has 100% description coverage for all six parameters, so the schema already documents each parameter's meaning and requirement. The description adds no additional parameter-level detail, which is acceptable under the baseline of 3 when schema coverage is high.

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 clear verb and resource: updating an existing DNS resource record. The word 'existing' helps distinguish it from creating or deleting records, and the resource type 'DNS resource record' is specific. However, it does not explicitly name sibling tools like dnsAddRecord or dnsDeleteRecord, so sibling differentiation is implicit rather than direct.

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?

No usage guidance is provided. The description implies the tool is for modifying an existing record, but it does not state when to choose this tool over dnsAddRecord, dnsDeleteRecord, or dnsListRecords. There are no exclusions, prerequisites, or alternative tool mentions.

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