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

Annotations already declare readOnly=false, destructive=false, openWorld=false, and idempotent=false. The description usefully adds that the reply is delivered to the named person's email, which clarifies the outbound side effect. It does not mention that repeated calls are non-idempotent (each call sends another message) or any rate/confirmation behavior, so it adds only modest context on top of the annotations.

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?

Two tight sentences, zero filler, with the core action stated first and the sibling routing second. Every clause earns its place.

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 a 100% documented schema and an output schema covering return values, the description only needs to add routing and behavioral framing, which it does. The one gap is the non-idempotent 'each call sends a new message' implication, which an agent might need before retrying.

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% with all six parameters documented, including enum meanings for lang and service, so the schema already carries the semantic load. The description's 'on behalf of a named person' only loosely reinforces the name/email intent and adds no format or syntax detail beyond the schema.

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 (send a message), a resource (the INITE team), and scope (on behalf of a named person, with the reply routed to their email). It also names the sibling inite_book_call, so an agent can distinguish this from the booking path without opening any schema.

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?

Explicitly routes conversational questions to inite_book_call, giving a clear when-not condition. It does not address the other related siblings (inite_buy, inite_services, inite_guides), so the alternative coverage is good but not exhaustive.

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