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

Annotations already declare readOnly/idempotent/non-destructive, so the safety profile is covered. The description does add real value beyond them: the output is privacy-minimized (redacted) and the call is gated on a conversion state. It stops short of saying what failure looks like when the gate isn't met, which is the one behavior an agent most needs.

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 front-loaded sentence with the action first and no filler. It is efficient, though a portion of its brevity comes from compressing meaning into opaque internal terms rather than genuinely economical phrasing.

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?

An output schema exists, so return values need not be explained. But for a tool whose sole required parameter is undescribed, and whose gating condition is stated in terms an agent cannot act on, the definition is not sufficient to invoke it confidently.

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?

With one required parameter (sessionToken) and 0% schema description coverage, the description carries the full burden and says nothing about it — not where the token comes from, its lifetime, or what scope it must represent. This leaves the only input undocumented in both schema and prose.

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 verb+resource pair ('Return a ... booking confirmation') is identifiable, but 'privacy-minimized' and 'authoritative Stay workflow' are internal jargon that an outside agent cannot decode. Nothing distinguishes it from siblings such as reservations.get_status or payments.get_status, which also deal with post-booking state.

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?

The clause 'only after the request has converted into the authoritative Stay workflow' implies a precondition but never states it operationally (what 'converted' means, what happens if it hasn't, or which sibling to call instead). No alternatives are named among the 26 siblings.

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