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 the useful detail that figures are reported in the operator's payout currency and that pending payouts are tied to accepted bookings, but says nothing about permissions, calculation windows, or freshness of the data.

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 dense sentence that front-loads the resource and then enumerates the contents; nothing is wasted. It is slightly list-heavy but appropriately sized.

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 carries the burden of describing return contents, and it does so reasonably well: total and monthly payouts, pending payouts, latest bookings, and currency. It stops short of explaining ordering, limits on the 'latest bookings' list, or time ranges.

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 description coverage is 100% and there is only one parameter (company_id), whose schema description even tells the agent where to source it (list_boats or get_company). The description adds no parameter semantics beyond the currency note, so baseline 3 applies.

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 and enumerates its payload (total/monthly payouts, pending payouts, latest bookings), so an agent knows this is a read-only earnings/finance retrieval tool. It lacks any explicit differentiation from siblings like get_pricing or list_bookings, which would have pushed it to 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?

There is no when-to-use statement, no prerequisites, and no mention of alternatives such as get_pricing or list_bookings for related financial data. Usage is only inferable from the payload listing.

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