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

Beyond the annotations, the description discloses that the first call is a non-mutating validation step, that it returns a summary and `confirm_token`, that invalid fields are refused by name, and that the second call performs the import. This is exactly the behavioral context an agent needs for a two-phase mutation tool.

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 front-loaded, compact, and structured around the actual call sequence. Every sentence contributes operational information, including permission, validation behavior, and human-confirmation gating.

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 two-parameter, two-call import tool, the description covers permissions, validation, confirmation flow, and returned `confirm_token`. The main remaining gap is the lack of guidance on valid `provider` values and on choosing this tool over closely related integration/calendar siblings.

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 description adds strong semantics for `confirm_token` and for the refusal of unexpected fields due to `additionalProperties: false`. It does not explain what values `provider` expects or how to choose them, leaving one of the two parameters underdocumented given only 50% schema description coverage.

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 clearly states the specific action: importing busy times now, with a two-call confirmation flow. It does not explicitly distinguish this tool from the sibling `set_import_busy`, so it falls short of full sibling differentiation.

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?

The description gives clear invocation guidance: call first without `confirm_token`, show the summary, then call again with `confirm_token` only after the person agrees. It does not, however, state when to use this over alternatives such as `set_import_busy` or `choose_integration_calendar`.

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