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

Annotations already declare readOnly, idempotent, non-destructive, openWorld behavior, so the safety profile is covered. The description still adds value by disclosing the payload contents (API version, as-of date, markets, pillars), which is meaningful because no output schema exists. It does not mention auth requirements or error behavior, but for a parameterless read-only status call that is a minor gap.

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 front-loaded before the invocation rule. 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 input parameters and no output schema, the description carries the return-shape burden and does so by listing the reported fields, and it states the primary use case. It is complete enough to call correctly; the only shortfall is the absence of any error or staleness caveat for what is effectively a freshness/diagnostic check.

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 4 is the baseline under the rubric and nothing in the description contradicts that. No parameter semantics are needed or missing.

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 Attic connector status) and enumerates exactly what it reports: API version, weekly as-of date, the four markets, and the 14 pillars. It clearly reads as a diagnostic/status tool rather than a data fetcher, distinguishing it implicitly from the many list/get siblings. It stops short of explicitly contrasting itself with a sibling such as attic_comps_status.

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 an explicit trigger: 'Call this first when the user asks what week the reports cover.' That is a clear when-to-use rule that an agent can act on. There is no when-not guidance or named alternative, but the intended invocation context is unambiguous.

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