Get DNS Zone RRSet

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

Annotations already declare readOnlyHint, idempotentHint, and destructiveHint=false, so safety behavior is covered. The description adds the useful scoping fact that the result is a single RRSet selected by zone/name/type, but does not disclose behavior such as missing-record handling or the content of the returned RRSet. No contradiction; moderate value beyond annotations.

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?

A single sentence, front-loaded with the action and resource, with no filler. Every word contributes directly to understanding what the tool does and how it selects the target.

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 full schema coverage for all three required parameters and annotations that define the operation as read-only, idempotent, and non-destructive, the description is sufficient for correct invocation. It could briefly note that the response is the RRSet itself, but this is not an invocation-critical gap given the tool name and 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?

Schema description coverage is 100%, with meaningful per-parameter descriptions including examples, enum values, and id format constraints. The description adds no meaning beyond the schema's parameter documentation; it merely restates the three selection keys at a high level.

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 verb (Get), a specific resource (RRSet), and the exact keys used to identify it (zone, name, record type). The word 'specific' distinguishes it from listing all RRSets, and the tool name and title align cleanly with the action.

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 phrase 'a specific RRSet' implies this tool is for single-record-set lookups rather than listing all RRSets, but the description never explicitly says when to use this versus list_zone_rrsets or the RRSet mutation tools. Usage context is only implied, not clarified with alternatives or exclusions.

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