Zone Details

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

Annotations already declare readOnlyHint, idempotentHint, openWorldHint and destructiveHint=false, so the safety profile is covered. The description adds real value by enumerating what is returned (configuration, status, nameservers, metadata), which matters since there is no output schema. It stops short of noting error behavior or account scoping effects.

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 two substantive sentences are front-loaded and waste-free. The trailing 'Read operation.' is redundant with readOnlyHint=true and slightly dilutes the payload.

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?

With no output schema, enumerating the returned fields is a genuine contribution, but the description leaves the account parameter's routing semantics and the ID format unexplained. For a simple read tool this is adequate but has clear gaps.

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 50%: the account parameter is documented, but zone_id's schema description is empty. The description compensates partially by stating the zone is 'identified by its zone ID', but says nothing about the account parameter's role in routing, so the gap is only half filled.

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 ('Retrieves') and resource ('zone'), scoped to a single zone identified by ID, which implicitly separates it from list_zones. However, it never names a sibling such as get_zone_setting, so the agent must infer the boundary from scope alone.

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 versus list_zones, get_zone_setting, or get_zone_entrypoint. 'Read operation' restates the annotation rather than describing context or prerequisites.

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