outlook_validate_event_datetimes

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

No annotations are provided, so the description must disclose behavioral traits. It states 'validate,' implying a read-only check, but does not confirm side effects, error handling, or return behavior. This lack of detail fails to inform the agent about consequences or output.

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?

The description is a single, efficient sentence with no wasted words. However, it is somewhat under-specified, but conciseness is still a strength given the minimal text.

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?

Given the absence of an output schema, the description should explain what the validation returns (e.g., boolean, errors). It does not. With many sibling tools, the context of when to validate is unclear. The description is incomplete for understanding the tool's full behavior.

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?

The input schema covers all parameters with basic descriptions (e.g., 'Start time to validate'). Since schema description coverage is 100%, the description adds no extra meaning beyond what the schema already provides. The description does not clarify format requirements or constraints for dateTime or timeZone.

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 states 'Validate event start and end times,' which identifies the action and resource. However, it does not specify what validation entails (e.g., format, logical consistency), making it somewhat vague. Without distinguishing from siblings like outlook_check_availability or outlook_find_meeting_times, the purpose is only partially clear.

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?

No guidance on when to use this tool versus alternatives, such as before creating or updating an event. No exclusions or context are provided, leaving the agent without clear direction on appropriate usage.

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