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

The annotations already declare readOnlyHint=true and openWorldHint=true, so safety is covered. The description adds nothing beyond that: it does not disclose default range behavior when dates are omitted, sort order, timezone/date-format expectations, or that results are paginated — despite the schema exposing a cursor.

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 sentence with no filler and the scope stated up front. It is efficient, but the economy comes partly at the cost of under-specification rather than being purely tight writing.

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, no annotation detail beyond hints, and zero parameter descriptions, the description carries the full explanatory burden and does not meet it. An agent cannot tell how paging works, what the date string format is, or what a response contains.

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 0% across 5 parameters. The description covers only subAccountId and the startDate/endDate pair, and even there adds no format or inclusivity detail. The 'limit' and 'cursor' parameters — the entire pagination contract — are undocumented in both the schema and the description.

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 gives a specific verb and resource ('List appointments') and states both the scoping constraint (subaccount) and the optional date filter. It is unambiguous on its own, though it does not distinguish itself from any sibling — there is no sibling appointments tool, so this costs little.

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?

Usage is only implied: an agent infers it should call this when it needs appointments for a subaccount in a window of time. There is no statement of when to prefer it over another tool, no prerequisites, and no note about when the date range should be omitted.

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