Calendar Update Event

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

The description adds no behavioral context beyond what the tool name and annotations already imply. With annotations like idempotentHint=false and destructiveHint=false present, the description provides no additional detail about partial updates, required ownership, or effects on recurrence, so the agent must infer the mutation semantics from the name alone.

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 short, but this is under-specification rather than conciseness. The single sentence spends its words on generic delegation/MCP framing instead of earning its place with functional content.

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 tool with 9 parameters, 0% schema description coverage, and mutation semantics, this is severely incomplete. The description provides no guidance on how to use the tool, what updating an event entails, or how it differs from calendar_create_event and calendar_delete_event.

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% and the description mentions none of the 9 parameters. The agent is left without explanation for required event_id, ISO datetime formats, recurrence object shape, or which fields can be updated together.

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 only repeats the tool name ('calendar_update_event') and generic platform framing ('Delegated Apple domain tool ... exposed through Apple-Tools-MCP'). It never states the actual action, resource, or effect, and it does not differentiate from siblings like calendar_create_event, calendar_delete_event, or calendar_get_event.

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 guidance about when to use this tool versus alternatives. It does not mention that it updates an existing calendar event, nor does it contrast with calendar_create_event for new events or calendar_delete_event for removal.

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