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

Annotations already declare readOnlyHint, idempotentHint, destructiveHint=false and closed-world scope, so the safety profile is covered structurally. The description adds genuinely new behavior: which fields come back and the downstream constraint that unverified sites cannot be analysed, plus an explicit capability boundary.

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?

Three short sentences: what it returns, the operational caveat, then the negative boundary. Front-loaded and waste-free; every clause carries information an agent needs.

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?

With no output schema and no parameters, the description correctly carries the return-value burden and states the fields returned. Minor gaps remain — no mention of ordering, empty-result behavior, or pagination — but for a simple org-scoped list this is close to complete.

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?

There are zero parameters, so the baseline is 4; there is nothing for the description to disambiguate. It correctly implies the result set is scoped to the organization rather than caller-supplied, which is the only semantic that matters here.

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 specific resource (the organization's websites in Website Growth Ops) and the exact per-item data returned (domain, verification status, verification time), so the agent knows this is a read/list operation. The verb itself is only implied from the title rather than stated in the body, and no sibling such as webops_website_status is named, so it stops 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 gives a clear use condition in parentheses — only verified websites can be analysed — which explains why an agent should call this first before analysis. The closing sentence ('It cannot add, verify or remove a website') implicitly routes creation/verification elsewhere, but no sibling tool is named explicitly.

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