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mathewcsims

mail-calendar-mcp

by mathewcsims

calendar_remove_all_alarms

Remove all alarms from a calendar event by specifying its unique identifier (UID).

Instructions

Remove every alarm from an event.

Input Schema

TableJSON Schema
NameRequiredDescriptionDefault
uidYes
calendarNameNoCalendar name. Ambiguous if duplicated (common on multi-account setups) — use calendarIndex instead in that case.
calendarIndexNoPosition from calendar_list_calendars, for disambiguating duplicate calendar names. Stable only for the current Calendar.app process.
Behavior2/5

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

The description adds no behavioral context beyond what annotations already provide. Annotations indicate mutation (readOnlyHint=false) but no destructive or idempotent hints. The description does not disclose permissions, reversibility, or behavior for events with no alarms.

Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.

Conciseness4/5

Is the description appropriately sized, front-loaded, and free of redundancy?

The description is a single sentence of 5 words, achieving high conciseness. However, it could be slightly expanded to include essential context without losing brevity.

Shorter descriptions cost fewer tokens and are easier for agents to parse. Every sentence should earn its place.

Completeness2/5

Given the tool's complexity, does the description cover enough for an agent to succeed on first attempt?

Given no output schema, the description should mention return values or confirmation. It does not. It also fails to specify which parameters are required or behavior for edge cases (e.g., event not found). Incomplete for a mutation tool.

Complex tools with many parameters or behaviors need more documentation. Simple tools need less. This dimension scales expectations accordingly.

Parameters2/5

Does the description clarify parameter syntax, constraints, interactions, or defaults beyond what the schema provides?

Schema description coverage is 67% (uid lacks description). The tool description does not explain the uid parameter, nor does it add meaning for calendarName or calendarIndex beyond the schema. For a required parameter with missing schema description, the description should compensate, but it does not.

Input schemas describe structure but not intent. Descriptions should explain non-obvious parameter relationships and valid value ranges.

Purpose4/5

Does the description clearly state what the tool does and how it differs from similar tools?

The description clearly states the verb 'remove' and the resource 'every alarm from an event', which distinguishes it from sibling tools like 'calendar_add_alarm'. However, it could be more explicit about removing all alarms from a specific event.

Agents choose between tools based on descriptions. A clear purpose with a specific verb and resource helps agents select the right tool.

Usage Guidelines2/5

Does the description explain when to use this tool, when not to, or what alternatives exist?

No guidance is provided on when to use this tool versus alternatives, prerequisites (e.g., event existence), or when not to use it. This leaves the agent without context for appropriate invocation.

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

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