Calendar List Events

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

Annotations declare readOnlyHint and idempotentHint, which convey safety and repeatability, but the description itself adds no behavioral context. It does not mention that this lists events, how results are scoped by time range, or any behavior beyond the tool name. No contradiction exists, but the description provides zero value beyond the annotations.

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 effective conciseness. A single sentence that only restates the tool name earns its place poorly.

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 two required parameters, an optional calendar filter, and a limit, the tool needs at least a basic explanation of what it does and what inputs mean. The description is so sparse that an agent cannot determine the tool's purpose, invocation context, or result semantics.

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 compensates for none of it. The required start_iso/end_iso parameters, optional calendar_id, and limit are entirely unexplained, leaving an agent without any semantic understanding of the arguments.

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 is a pure tautology: 'Delegated Apple domain tool calendar_list_events exposed through Apple-Tools-MCP' merely restates the tool name and says it is exposed through MCP. It states no verb, resource, or action, and does nothing to distinguish this tool from calendar_list_calendars 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 on when to use this tool versus alternatives such as calendar_list_calendars or calendar_get_event. The phrase 'Delegated Apple domain tool' offers no actionable context about prerequisites, scope, or exclusions.

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