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

Annotations only declare idempotentHint and destructiveHint=false; the description adds real behavioral context: snooze is self-terminating after fixed durations, and do_not_disturb_off cancels an active snooze. It doesn't state permission requirements or how calls are routed, but the interaction between actions is well disclosed.

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 sentences, front-loaded with the core on/off action before the snooze nuance. The parenthetical duration list is dense but earns its place by mapping to the enum; slightly long but no wasted filler.

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 no output schema, the description covers the state transitions and targeting rules an agent needs to call it correctly. It stops short of describing the resulting state response or who may change another rep's availability, which are minor gaps for a simple availability toggle.

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 schema already documents every parameter, including the enum meanings and the user_id/email targeting rule. The description restates the same targeting detail and duration list rather than adding new semantics beyond the schema, so the baseline 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?

States a specific verb and resource ('Turn Do Not Disturb on or off for a rep') plus the snooze variant, so the agent knows exactly what operation it performs. No sibling tool covers rep availability, so differentiation is implicit but unambiguous.

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?

Explains the three actions and when each applies, including that turning off also ends a snooze, and how to target the rep ('omit both for yourself'). It lacks explicit exclusions or pointers to alternative tools, but none exist for this capability.

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