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

With readOnlyHint=true already covering the safety profile, the description adds real context: default sort is newest first, large result sets must be paged via the afterId cursor, includeResources is transmitted as includeResources=1, and dateType only works on accounts with the new reservations query. It stops short of mentioning rate limits or response size limits.

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?

Front-loaded with purpose, then filters, then pagination, then the channel-id legend. The channel enumeration is long but earns its place because the schema has no enum for channelId. No filler sentences.

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?

For a 23-parameter read tool with no output schema, the description covers purpose, filterable dimensions, sort default, pagination cursor mechanics, and the out-of-schema channel-id values. The absence of an output schema is partly offset by naming the returned fields; only rate/size limits are 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%, so the baseline is 3, but the description adds meaning the schema lacks: the concrete channel-id mapping (2000 direct, 2018 airbnbOfficial, 2002 Vrbo, 2005 bookingcom, etc.) for a channelId parameter that has no enum in the schema, plus the note that afterId causes offset to be ignored. That is genuine value beyond the structured fields.

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+resource ('List reservations across all channels') and enumerates the payload fields returned (guest, dates, status, price, channel) and the filter dimensions, so the agent knows exactly what this tool produces. It does not explicitly contrast itself with the sibling hostaway_get_reservation, but the plural/list semantics make the distinction clear.

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 describes what can be filtered and how to page ('for large accounts page with afterId'), which is operational guidance, but it never names an alternative tool or states the condition under which this list tool should be chosen over hostaway_get_reservation or hostaway_list_conversations. Usage is implied rather than prescribed.

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