add_dns_zone

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

With readOnlyHint=false and destructiveHint=false, the write semantics are already implied by the annotations; the description adds useful context by stating the authorization requirement (pdns/edit) and the backend endpoint. It does not discuss idempotency or duplicate-zone behavior, but the permission and endpoint details add value beyond the 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?

The description is two short sentences with no filler. The action and resource are front-loaded, and the permission requirement is stated separately and clearly.

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 schema is rich and fully covers the parameters, making the tool callable. However, the description omits usage differentiation from sibling DNS tools, output/return behavior, and any caveats about existing zones, leaving the agent to infer selection and side effects from context.

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%, so the schema fully documents parameters, including the confirm=true requirement, defaults, and the nested SOA object. The description itself adds no parameter-level detail, so the baseline score of 3 applies.

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 the action and resource: creating a DNS zone on an authoritative PowerDNS server, and even names the endpoint pdns/add_zone. It does not explicitly distinguish itself from sibling DNS tools like add_dns_domain or add_dns_subdomain, but 'zone' plus 'PowerDNS' provides reasonable differentiation.

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 gives no when-to-use guidance and names no alternatives. It only mentions the required permission pdns/edit, which is a prerequisite rather than a usage condition. An agent cannot tell when to choose this tool over add_dns_domain or add_dns_subdomain.

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