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

The annotations already declare destructiveHint=true and idempotentHint=false, so the description is not responsible for the safety profile. It adds useful context beyond annotations: an authentication constraint, a confirmation warning, and the mechanism for undoing a block via remove_exception_id. It does not detail side effects on existing bookings or required permissions beyond sign-in.

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?

Three tight sentences are front-loaded with the authentication scope and then move directly to the actions and caution. Every sentence adds necessary information with no 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?

The description covers authentication, both block/open modes, removal, and a confirmation warning, which is strong for invocation. However, given seven parameters, very low schema description coverage, and no output schema, it leaves important parameter details (from/to dates, reason, resource_id naming) and requiredness unaddressed.

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 only 14%, so the description needs to compensate but largely does not. It explains open=true and remove_exception_id and implies resource_id by mentioning 'one staff member/room', but from, to, reason, and requiredness are left undocumented in both the schema and the description.

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 a specific verb and resource: close time for the whole business or one staff member/room, or open extra time using open=true. It also explains how to remove a block via remove_exception_id, so an agent can tell this apart from schedule-setting or booking tools.

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?

It gives clear prerequisites ('Only for business owners signed in to Awning') and when to use the tool, including the distinction between closing time and opening extra time with open=true. It adds a caution ('Confirm with the owner first') but does not name explicit alternatives or when-not-to-use conditions.

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