apple-reminders

A command-line tool for managing Apple Reminders, the built-in app for personal to-dos on Apple devices.

In plain words
What is it for?
Use it to manage reminder lists and filter tasks by dates such as today, tomorrow, or this week on macOS.
Why use it?
It lets you view, create, edit, complete, and delete reminders from a terminal while keeping them synced with the Reminders app.

Skill for Claude CodeCodex

Install

Getting it into your agent

One page per mod, every tool's command on it. A separate URL per tool would split the same page into five that compete with each other.

agentmods
npx agentmods add skills/understudy-ai/understudy/apple-reminders
Any agent
npx skills add understudy-ai/understudy --skill apple-reminders
Clone the repo
git clone --depth 1 https://github.com/understudy-ai/understudy

Made for: Claude Code, Codex.

Per session 34 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 813 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. Scan, not verified.
Origin 83% 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.

ModelPer sessionOnce invoked
Fable 5 $0.00034 $0.00813
Opus 5 $0.00017 $0.00407
Sonnet 5 $0.00007 $0.00163
Haiku 4.5 $0.00003 $0.00081

Measured 2d ago against content hash 99e28333d2dd, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade A, and why

apple-reminders 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 2d 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

83% identical to apple-reminders — 12 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.

skills/apple-reminders/SKILL.md · 119 lines

How it starts

The opening of the file, as written. The whole thing — 119 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Apple Reminders CLI (remindctl)

Use remindctl to manage Apple Reminders directly from the terminal.

When to Use

USE this skill when:

  • User explicitly mentions "reminder" or "Reminders app"
  • Creating personal to-dos with due dates that sync to iOS
  • Managing Apple Reminders lists
  • User wants tasks to appear in their iPhone/iPad Reminders app

When NOT to Use

DON'T use this skill when:

  • Scheduling Understudy chat alerts or recurring automations → use the schedule tool instead
  • Calendar events or appointments → use Apple Calendar
  • Project/work task management → use Notion, GitHub Issues, or task queue
  • One-time or recurring in-chat notifications → use the schedule tool
  • User says "remind me" but means an Understudy alert in this chat → clarify first

Setup

  • Install: brew install steipete/tap/remindctl
  • macOS-only; grant Reminders permission when prompted
  • Check status: remindctl status
  • Request access: remindctl authorize

Common Commands

View Reminders

remindctl                    # Today's reminders
remindctl today              # Today
remindctl tomorrow           # Tomorrow
remindctl week               # This week
remindctl overdue            # Past due
remindctl all                # Everything
remindctl 2026-01-04         # Specific date

Manage Lists

remindctl list               # List all lists
remindctl list Work          # Show specific list
remindctl list Projects --create    # Create list
remindctl list Work --delete        # Delete list

Create Reminders

remindctl add "Buy milk"
remindctl add --title "Call mom" --list Personal --due tomorrow
remindctl add --title "Meeting prep" --due "2026-02-15 09:00"

Complete/Delete

remindctl complete 1 2 3     # Complete by ID
remindctl delete 4A83 --force  # Delete by ID

Output Formats

remindctl today --json       # JSON for scripting
remindctl today --plain      # TSV format
remindctl today --quiet      # Counts only

Read the full file on GitHub · 119 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.

  1. 2d ago First seen · 119 lines · 34 tokens per session scan A 99e28333d2dd

Subscribe to this mod's changes

apple-reminders is a skill published in the GitHub repository understudy-ai/understudy (456 stars, last pushed 2mo ago), licensed MIT. It adds 34 tokens to every session and 813 once invoked, about $0.0002 per session on Opus 5. A static security scan graded it A with 0 findings. It is 83% identical to apple-reminders, differing in 12 lines, and is treated as a copy.