mailkite_verify_domain

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

Annotations already convey mutation and non-idempotency. The description adds that it checks DNS and updates statushol, and explicitly states an auth requirement (management session token), which goes beyond the annotation flags.

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?

Two short sentences, both substantive. Nonessential words are avoided and the most important info (DNS check, status update, token requirement) is front-loaded.

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?

Adequate for a simple tool with one parameter and annotations, but does not explain what type of id is needed, what statuses exist, or what a caller should observe after verification. No output schema means a little more context would help.

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 covers the single id parameter. The description adds no parameter detail, but with full schema coverage this meets the baseline.

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 concrete action ('Check DNS and update status') tied to the tool name verify_domain, so an agent understands what it does. It doesn't explicitly name the domain or differentiate it from close siblings (e.g. get_domain, check_domain_availability), so it is slightly short of a 5.

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?

It offers no guidance on when to use this tool versus alternatives, what state the domain should be in, or what to do after verification. The only prerequisite mentioned is a management session token.

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