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

Annotations already cover the safety profile (readOnly, idempotent, non-destructive, closed-world), so the description is free to add semantics — and it does: it discloses that the result reports connection-readiness per area, includes links, and exposes a `narrative` field that constitutes the answer. Beyond that it says little about size or freshness of the payload, but for a zero-parameter informational tool this is solid added context.

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 a single dense sentence-plus-clause that front-loads the resource and then lists coverage, followed by a short call-condition sentence and a pointer to `narrative`. The enumeration is long but each item is a distinct capability area, so it earns its space; the phrasing is somewhat run-on and could be broken for scanability.

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 parameters and no output schema, the description must carry the return-value burden, and it does name the key output field (`narrative`) and the categories of content returned. It stops short of describing the remaining response structure or whether connection links are actionable, which is a minor gap for a discovery tool.

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 no parameters, so there is no parameter semantics to explain; the schema coverage is trivially 100%. Baseline for a zero-parameter tool applies, with no gap the description needed to fill.

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 — a capability/onboarding overview for THIS seller's account — and enumerates the concrete areas it covers (profit, stock, Buy Box, shipments, listings, promotions, ads, brand). It explicitly separates what is ready from what needs a connection, and contrasts with what Seller Central alone can do, so an agent can distinguish it from sibling data tools like get_account_health or daily_brief.

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 explicit trigger conditions with quoted user phrasings ('what can you do', 'how do I start', 'what can I ask'), which is strong when-to-use guidance. It does not say when to prefer a sibling instead (e.g. what_i_cannot_tell_you or list_my_accounts), and the 'what only Seller Central can do' content slightly overlaps what_i_cannot_tell_you, leaving a small routing ambiguity.

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