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

Annotations already declare destructiveHint=true, idempotentHint=false and readOnlyHint=false. The description adds genuinely useful behavior beyond that: it explains partial-update semantics and that null clears greeting/out-of-office message. It does not elaborate on what the destructive flag implies (overwriting) or auth requirements.

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 tightly packed sentences with the field list front-loaded and the update semantics trailing. No filler, every clause carries information.

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 10-parameter destructive mutation with no output schema, the description covers the field surface and partial-update behavior well. It leaves gaps around the required inbox_id, the meaning of the destructive/idempotency hints, and what the call returns, which an agent would want before invoking.

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%, so the description must compensate, and it does: it maps to nearly every field (name, greeting, auto-assignment, CSAT, single-conversation lock, working-hours flag, timezone, out-of-office) and clarifies null semantics for the nullable ones. It omits the required inbox_id and any timezone format detail, so it is not exhaustive.

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 verb ("Make changes") and resource ("an inbox") and enumerates the editable field set, so the agent knows exactly what this mutates. It does not, however, distinguish itself from sibling inbox-mutation tools like update_working_hours or update_agents_in_inbox, so it falls short of a 5.

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 prerequisites, and no routing against alternatives such as get_inbox (read) or update_working_hours, which overlaps the working-hours flag. The patch-style note ("Only the fields you pass change") is semantic help rather than usage guidance.

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