emailVerification

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

No annotations are present, so the description carries the full burden of behavioral disclosure. It states that an email is sent but does not disclose side effects, idempotency, rate limits, or what happens if verification is already complete.

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 wasted words; the action and resource appear first. The appended external documentation link is of limited direct value to an agent but does not significantly harm clarity.

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 tool is simple and has only one parameter, but important context is missing: when to use it instead of related tools, prerequisites, and what the response means. Since this action sends an external email and there are no annotations, the description is not fully adequate for correct selection and invocation.

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?

The sole parameter 'email' is fully described in the schema as 'Registrant email address' (100% coverage). The description adds no additional format or validation details, so the baseline of 3 is appropriate.

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 identifies the action ('Send (or re-send)') and the resource ('ICANN registrant email verification message'). It distinguishes the tool from status-related siblings like registrantVerificationStatus, though it does not explicitly contrast with other resend 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?

No guidance is provided about when to use this tool versus alternatives. The description does not mention prerequisites, such as having a registered domain or valid registrant contact, nor does it point to registrantVerificationStatus for checking verification state.

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