verify_domain

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

No annotations are provided, so the description carries the full behavioral burden, and it says almost nothing. It omits whether verification mutates domain state, whether it is idempotent, whether DNS propagation makes it async/slow, whether it can be re-run, and what permissions it requires.

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?

A single, front-loaded sentence with no filler; the verb and the precondition arrive immediately. Nothing could be removed without losing information.

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?

For a state-affecting verification tool with no annotations and no output schema, the description should explain success/failure outcomes and any propagation delay behavior. It covers only the bare purpose, leaving the agent without enough context to interpret results.

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% and the single 'domain' parameter is undocumented. The description does not clarify whether this expects an apex domain or a sending subdomain, or the expected format, so it fails to compensate for the schema gap even though the parameter is self-evident.

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 gives a specific verb (verify), resource (DNS for a sending domain), and a temporal precondition (after records are applied), which cleanly separates it from siblings like apply_domain_dns and create_domain. It does not name the sibling tool explicitly, so it falls just short of the top score.

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 phrase 'after records are applied' implies the correct point in the workflow, which is useful sequencing guidance. However, it never states alternatives (e.g., use apply_domain_dns first), what to do if verification fails, or whether retries are needed, leaving usage only implied.

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