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

Annotations already declare readOnlyHint=true and openWorldHint=false, so the agent knows this is a safe, closed-domain read. The description adds that the content spans policy and post-purchase topics, but it does not disclose the shape of what comes back (a single document, a list of articles, or a summary) or whether content is static. With annotations covering safety, this is a moderate but not rich addition.

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 enumerating the covered topics with zero filler. Every clause maps to a real question an agent might route here, and nothing is repeated from the title.

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 zero-parameter informational tool with no output schema, the description covers the topical scope thoroughly enough that an agent can decide whether its question falls inside it. The remaining gap is that it does not indicate the form of the returned content, but for a static knowledge lookup that is a minor omission.

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?

The tool takes zero parameters, so per the baseline this scores 4. There is nothing for the description to disambiguate on the input side, and it correctly does not waste words on nonexistent arguments.

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 — customer-facing support content about Hostamir (contact, hours, payment, refunds, backups, post-order flow, service management) — so the agent knows this is the informational/FAQ lookup rather than an action tool. It is clearly distinct from the sibling tools (check_domain, domain_prices, list_plans, order_link), though it does so implicitly by topic rather than by explicit contrast.

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 topic list implies when to reach for this tool (any question about contacting the host, payments, refunds, or post-purchase management), but there is no explicit 'use this when…' or 'use X instead for…' statement. The agent must infer routing from the topics covered and from sibling names.

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