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

Annotations already declare readOnlyHint=true, destructiveHint=false and openWorldHint=false, so the safety profile is covered. The description adds useful content context (which fields come back) and the resource comparison, but says nothing about behavior on an unknown/nonexistent domain_id or response size.

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 sentences, zero filler, with the payload contents and the alternative-view note front-loaded. Every clause earns its place.

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, the description at least names the notable returned fields, and the read-only nature is covered by annotations. Complete enough for a one-parameter lookup, though error/missing-resource behavior is unaddressed.

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 coverage is 100% for the single required domain_id parameter, so the schema already carries the semantics. The description adds no format, sourcing, or lookup guidance beyond what the schema states, making the baseline 3 appropriate.

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?

States a specific verb and resource ('Get full details for a specific domain') and enumerates the payload contents (icon_url, brand_aliases, sitemap scan state). It does not explicitly name list_domains as the collection counterpart, so sibling differentiation is only implied by 'a specific 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?

Provides a routing hint by contrasting this tool with the lighter pingaura://domains/{domainId} resource view of the same domain, which tells the agent when the heavier call is warranted. It gives no explicit exclusions or error conditions.

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