List service DNS options

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

Annotations already declare readOnlyHint=true, openWorldHint=false and destructiveHint=false. The description adds a real behavioral detail the annotations do not carry: the required dns:read scope when using an API key. It does not describe pagination or return ordering, hence not a 5.

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?

Three tight clauses, one sentence: what it lists, when to use it, and the auth requirement. Nothing is redundant or buried.

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?

Covers purpose, precondition, alternative and permission scope for a read-only, single-parameter tool with no output schema. Return values are partially enumerated; only pagination/shape details are absent, which is minor.

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 coverage is 100% and the single orderNo parameter is fully documented with pattern, length and examples in the schema. The description adds no parameter-level syntax beyond that, so the baseline 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?

States a specific verb (List) and resource (service DNS options) and enumerates the three concrete data categories returned (public IPs, editable forward zones, existing DNS records). The mention of attach_service_dns_record distinguishes it from sibling DNS 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?

Explicitly says when to use it ('Use before attach_service_dns_record') and names the alternative workflow step, giving an agent a clear trigger condition.

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