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

Annotations already declare readOnlyHint, idempotentHint, openWorldHint and destructiveHint=false, so the safety profile is covered. The only added context is usage-based billing with a ~$0.02 estimate, which is genuinely useful behavioral information beyond the annotations, but it is boilerplate and says nothing about rate limits, auth, or result shape.

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?

It is short, but the content is injected billing metadata in an HTML comment rather than front-loaded functional information. Brevity here reflects absence of substance rather than efficient writing.

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?

An output schema exists, so return values need not be described, but everything else is missing: purpose, parameter semantics, and any routing versus the large set of sibling Semrush/DataForSEO tools. The definition is not usable on its own.

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?

Two required parameters ('domain', 'database') have 0% schema description coverage, so the schema explains neither format nor meaning. The description does not mention either parameter, leaving the agent with no guidance on valid domain syntax or which database values are accepted.

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 contains no statement of what the tool does — it is entirely a pricing boilerplate block wrapped in HTML comments. An agent must infer the purpose from the tool name alone, and gets no help distinguishing this from siblings like get_semrush_domain_overview or get_semrush_domain_vs_domain.

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?

There is no guidance on when to use this tool, when not to, or which sibling to prefer for related Semrush domain metrics. Nothing in the text addresses selection at all.

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