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

Annotations already declare readOnlyHint=true and openWorldHint=false, so the safety profile is covered by structured data. The description adds one useful behavioral fact — it returns only future bookings, not past ones — but says nothing about ordering, pagination, or what happens when the client has none.

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 short clause with no wasted words, and the key scope (future, my) is front-loaded. It reads as a fragment rather than a sentence, but nothing padding-like is present.

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 simple one-parameter read-only list tool with annotations covering safety and no output schema, the description is minimally adequate. It conveys what is returned and for whom, but is thin on return shape and edge cases.

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 a single parameter at 100% schema coverage, the schema already explains that session_token comes from complete_login or complete_registration. The description adds no parameter-level detail, so the baseline of 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 (prenotazioni) scoped to the authenticated client (del cliente che ha effettuato l'accesso) and adds a temporal filter (future). This is enough to separate it from cancel_my_booking and book, though the listing verb itself is only implied by the tool name rather than stated.

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 guidance, no mention of prerequisites beyond the implied login, and no routing to alternatives such as get_service_availability or cancel_my_booking. The agent must infer both the trigger and the boundaries on its own.

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