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. It does disclose that the call has a side effect beyond checking — continuing certificate issuance — which is valuable. But it is silent on what happens when the A-records do not match, whether issuance is blocking or async, what permissions or duration are involved, and what the caller should do on failure.

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?

One front-loaded sentence that states both the check and the follow-on action with no filler. It is tight, though the two-part action could have been split more clearly for scanning.

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?

There are no annotations, no output schema, and no parameter documentation, so the description is the only source of truth — and it omits failure behavior, idempotency, and return expectations for a call that mutates certificate state. Adequate for a first read, insufficient for correct invocation in edge cases.

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 parameter 'slug' is never mentioned in the description. The tool name and description imply the slug identifies a domain or site, but that is inference, not documented meaning; with only one parameter the cost is limited, but the gap is real.

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 names a concrete action pair: re-verifying that the domain's A-records point at the server, then continuing certificate issuance. That is specific and distinguishable from a generic domain lookup. It stops short of contrasting itself with siblings like vebhost_domain or vebhost_domain_bind, so it does not earn 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?

The word 'Ещё раз' (once again) implies this is a re-check to run after a prior check or during cert issuance, which is a real usage cue. However, no explicit when-to-use, preconditions, or alternative tool is named.

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