Cloudflare DNS

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

Annotations declare readOnlyHint=true, so the description does not need to restate that. It adds the detail that zone can be a name or id, which is a minor behavioral note. However, it does not disclose any other behavior such as pagination, limits, or how records are ordered, but given the annotation coverage this is acceptable.

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, front-loaded sentence with no filler. It states the core action and the key nuance about the zone parameter. Efficient and easy to parse.

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?

While an output schema exists, the description is incomplete for a tool with three parameters and zero schema descriptions. It does not explain what 'name' and 'dtype' are used for, nor does it mention any filtering or options. An agent would have to guess or inspect other tools to understand the full interface.

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 0%, so the description must compensate for the lack of parameter documentation. It only explains that 'zone' can be a name or id, but leaves 'name' and 'dtype' entirely unexplained. With three parameters, two are completely ambiguous, making it hard for an agent to call correctly.

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 action ('List DNS records') on a specific resource ('for a zone'), and clarifies the zone can be provided by name or id. This clearly distinguishes it from sibling tools that create, delete, or purge DNS records.

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 guidance is given on when to use this tool versus alternatives. It does not mention that it is a read-only listing operation or when one might prefer cloudflare_dns_create or delete. The agent must infer usage from the verb 'List' and sibling names.

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