Xác minh DNS domain

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

With no annotations, the description carries the full burden. It discloses that the tool checks DKIM and domain status, but it does not state whether verification is read-only or triggers an action, nor mention side effects or propagation timing. Basic behavior is clear, but the safety profile is incomplete.

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 bilingual sentences with no filler; the most important usage condition ('after adding DNS records') is front-loaded and the rest is directly relevant.

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 low-complexity tool with one required parameter and no output schema, the description covers the key workflow context and enough semantics to invoke it. A minor gap is the lack of guidance about possible pending states or propagation delays after DNS changes.

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 only 50% and domain_id has no description in the schema. The description identifies the domain as the object being verified, which maps to domain_id, but it does not explain how to obtain it, and it adds nothing about idempotency_key beyond the schema's own description.

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 verb and resource: 'verify the sender domain' after DNS records are added, and names concrete checks ('DKIM and domain status'). This clearly distinguishes it from siblings like mail_domain_add and mail_domains_list, which cover adding and listing domains.

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 gives explicit contextual timing: 'Use after adding DNS records to verify the sender domain' / 'Khi đã thêm DNS'. This tells an agent when in the domain-setup workflow to invoke it, though it does not explicitly name alternatives or state when not to use it.

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