What is apple-calendar-mcp GEMINI.md?

Project instructions for an MCP server that connects an AI agent to Apple Calendar and Apple Reminders on macOS. The server uses Apple's native EventKit system to work with events, reminders, lists, and tasks.

They are for developing or maintaining an agent integration that can read, create, update, and delete calendar events and reminders using natural-language requests.

They explain the project's structure, prerequisites, and run process so a developer can build and use the server correctly.

How ebenpaul/apple-calendar-mcp configures Gemini CLI

Reuse

Borrowing it

Nothing to install: this file belongs to ebenpaul/apple-calendar-mcp. Take a copy, put it at the same path in your own repository, and replace the rules that are about this project with yours.

Copy the file

curl -O https://raw.githubusercontent.com/ebenpaul/apple-calendar-mcp/claude/apple-calendar-mcp-fork-uy1e2v/GEMINI.md

Clone the repo

git clone --depth 1 https://github.com/ebenpaul/apple-calendar-mcp

Made for: Gemini CLI.

Wrote this? Show the measurements

A badge with what this costs and how it scanned, read live from this page, so it follows the numbers instead of freezing them. Markdown for a README, HTML for a documentation site or a project page.

README.md

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Or the 80×15 button, for a site that already has a row of RSS and ATOM ones. Only the verdict fits; the numbers stay here.

Your own site · 80×15

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Per session 1,136 This file is loaded in full into every session.

When invoked 1,136 The same file — it is already loaded in full.

Security scan A 0 findings. A grade says what 26 rules found in the file — not that it is safe.

Origin 100% copy Near-identical to another mod in the catalogue.

Token cost

What it costs to keep this loaded

Counted locally with the o200k_base tokenizer, which is exact for GPT models; Claude uses its own tokenizer and its counts differ. Treat this as one consistent yardstick across the catalogue rather than a bill. Prices are per million input tokens.

Model	Per session	Once invoked
Fable 5.1	$0.01136	$0.01136
Opus 5	$0.00568	$0.00568
Sonnet 5	$0.00227	$0.00227
Haiku 4.5	$0.00114	$0.00114

Measured 9d ago against content hash cb76befa95f0, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-09, from the pricing page.

Security

Grade A, and why

apple-calendar-mcp GEMINI.md scanned grade A with 0 findings against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured 9d ago.

A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.

Nothing flagged

None of the 26 patterns this scan looks for appear in this file: no shell pipes, no recursive deletes, no credential paths, no hidden text, no instruction-override or anti-refusal phrasing, no agent-config snooping. That is not a guarantee, it is the absence of the things that are checkable.

Origin

This is a copy

100% identical to mcp-server-apple-events GEMINI.md — 0 lines differ, which has more behind it and is treated as the original. This page carries a canonical link to it rather than competing with it.

GEMINI.md · 81 lines

How it starts

The opening of the file, as written. The whole thing — 81 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Apple Events MCP Server

Project Overview

This project is a Model Context Protocol (MCP) server that provides native integration with Apple Reminders and Apple Calendar on macOS. It allows AI agents to read, create, update, and delete reminders and calendar events, manage lists, and organize tasks using natural language.

Key Technologies:

Runtime: Node.js (TypeScript)
Native Integration: Swift (EventKit)
Protocol: Model Context Protocol (MCP) SDK
Validation: Zod
Testing: Jest
Linting/Formatting: Biome

Architecture

The project follows a 4-layer Clean Architecture:

Server Layer (src/server/): Handles MCP protocol communication and request routing.
Handlers Layer (src/tools/handlers/): Business logic for specific tools (reminders, calendars).
Utils/Repository Layer (src/utils/): Helper functions, validation, data access patterns, and eventCli.ts — the wrapper around the vendored event CLI.
Native Bridge: The vendored event Swift CLI (built from vendor/event submodule into bin/event) directly interacts with the macOS EventKit API and handles permissions.

Building and Running

Prerequisites

Node.js 18+
macOS (for EventKit integration)
Xcode Command Line Tools (for Swift compilation)
pnpm

Commands

Install Dependencies: pnpm install (also builds bin/event via postinstall on macOS)
Build (TS & event CLI): pnpm build (Required before starting)
Build event CLI Only: pnpm build:event
Start Server: pnpm start (Runs via stdio)
Development Mode: pnpm dev
Run Tests: pnpm test
Lint & Format: pnpm lint (Uses Biome)

Available Tools

The server exposes 5 main tools:

reminders_tasks: CRUD operations for individual reminders (create, read, update, delete). Supports filtering by list, due date, etc.
reminders_lists: Manage reminder lists (create, read, update, delete).
calendar_events: CRUD operations for calendar events. Supports time blocking and scheduling.
calendar_calendars: Read-only access to available calendars.
reminders_subtasks: Manages subtasks/checklists within reminders (create, read, update, delete, toggle, reorder).

Read the full file on GitHub · 81 lines

Changes

What this file has done since we first saw it

Hashed on every crawl. A supply-chain change to an agent config is a question of when, not whether, so the history is kept rather than the latest state alone.

9d ago First seen · 81 lines · 1,136 tokens per session scan A cb76befa95f0

Subscribe to this mod's changes

apple-calendar-mcp GEMINI.md is an instructions file published in the GitHub repository ebenpaul/apple-calendar-mcp (0 stars, last pushed 2mo ago), licensed MIT. It adds 1,136 tokens to every session, about $0.0057 per session on Opus 5. A static security scan graded it A with 0 findings. It is 100% identical to mcp-server-apple-events GEMINI.md, differing in 0 lines, and is treated as a copy.

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apple-calendar-mcp: Instructions file for Gemini CLI