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Delete Reminder

delete_reminder
Destructive

Permanently deletes a reminder in Apple Reminders (Reminders.app) by ID. Get the reminder_id from list_reminders. Requires confirm=true.

Input Schema

NameRequiredDescriptionDefault
confirmNoMust be true to delete
rememberNoWith confirm: true, also stop asking for this kind of action from now on. Only when the person said so ("don't ask again"). The person can revoke it in LMCP or with set_always_allowed.
reminder_idYesReminder identifier from list_reminders

Output Schema

NameRequiredDescriptionDefault

No arguments

Schema Changelog

Changes observed during successful MCP inspections.

  1. Changed1 schema field changed
    • addedInput schema / properties / remember
      Added value: +{
      +  "description": "With confirm: true, also stop asking for this kind of action from now on. Only when the person said so (\"don't ask again\"). The person can revoke it in LMCP or with set_always_allowed.",
      +  "type": "boolean"
      +}
  2. First observed

TDQS

A4.2/5.0
Behavior4/5

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

The annotations already declare destructiveHint=true and readOnlyHint=false, and the description reinforces this by saying the deletion is permanent. It also discloses the confirmation requirement, though it does not elaborate on failure behavior or the remember side effect beyond what the schema provides.

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

Conciseness5/5

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

It is two front-loaded sentences with no wasted text. The core action, ID source, and confirmation requirement are all stated efficiently.

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

Completeness4/5

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

For a destructive delete tool with rich annotations, full schema coverage, and an output schema, the description supplies the essential context: permanence, platform, ID source, and confirmation. It does not mention the remember parameter's persistent effect, but that is adequately covered by the schema.

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

Parameters3/5

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

Schema description coverage is 100%, so the schema already documents reminder_id, confirm, and remember in detail. The description adds the reminder_id source and confirm=true requirement, but these are largely already present in the schema descriptions.

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

Purpose5/5

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

The description states a specific verb and resource: permanently deletes a reminder in Apple Reminders by ID. It clearly distinguishes deletion from sibling actions such as complete_reminder, update_reminder, and delete_reminder_folder.

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

Usage Guidelines4/5

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

It gives a clear precondition by telling the agent to get reminder_id from list_reminders and that confirm=true is required. It does not explicitly explain when to choose this over alternatives like complete_reminder, but the context is otherwise clear.

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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