A command-line tool for viewing and changing events in Apple Calendar. It can show schedules, search events, and create, update, or delete calendar entries.

Use it to check today’s events, view upcoming days, search for meetings, create events, and manage events within selected Apple calendars.

It lets a coding agent work with your calendar through commands instead of requiring manual changes in the Calendar app.

calendar — Skill for Claude Code by ericboehs/claude-plugins

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.

Any agent

npx skills add ericboehs/claude-plugins --skill calendar

Clone the repo

git clone --depth 1 https://github.com/ericboehs/claude-plugins

Made for: Claude Code.

Or install apple-calendar, the plugin that ships this one along with the rest of its 1 skill.

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

[![agentmods](https://agentmods.dev/badge/skills/ericboehs/claude-plugins/calendar/github.svg)](https://agentmods.dev/skills/ericboehs/claude-plugins/calendar)

Your own site

<a href="https://agentmods.dev/skills/ericboehs/claude-plugins/calendar"><img src="https://agentmods.dev/badge/skills/ericboehs/claude-plugins/calendar/github.svg" alt="Measured on agentmods" height="20"></a>

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

<a href="https://agentmods.dev/skills/ericboehs/claude-plugins/calendar"><img src="https://agentmods.dev/badge/skills/ericboehs/claude-plugins/calendar.svg" alt="Reviewed on agentmods" width="80" height="20"></a>

Per session 34 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.

When invoked 1,288 The whole file, excluding the scripts and references it only reads on demand.

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

Origin original No closer match found 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	$0.00034	$0.01288
Opus 5.5	$0.00014	$0.00515
Sonnet 5.5	$0.00007	$0.00258
Haiku 4.5	$0.00003	$0.00129

Measured 2mo ago against content hash 4c33d366341c, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

calendar 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 2mo 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.

plugins/apple-calendar/skills/calendar/SKILL.md · 149 lines

How it starts

The opening of the file, as written. The whole thing — 149 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Apple Calendar (ical)

Manage Apple Calendar from the command line using ical — a native macOS Calendar CLI built on EventKit with full CRUD support.

Prerequisites

ical must be installed. If any command fails with "command not found", suggest running /setup-calendar.

Usage

/calendar — Show today's events
/calendar tomorrow — Show tomorrow's events
/calendar week — Show the next 7 days
/calendar add "Team standup" -s "tomorrow 9am" -e "tomorrow 9:30am" — Create event
/calendar search "standup" — Search events

Calendar Filtering

Calendars can be excluded from queries using the --exclude-calendar flag (repeatable). Configure excluded calendars in your CLAUDE.md so they're applied automatically. Example CLAUDE.md snippet:

## Calendar Exclusions
When using `/calendar`, always add these flags to list/today/upcoming/search commands:
--exclude-calendar "shared-calendar-name"

To discover available calendars:

ical calendars -o json

Commands

List today's events

ical today -o json

List events for a date range

# Tomorrow
ical list -f tomorrow -t tomorrow -o json

# Next 7 days
ical upcoming 7 -o json

# Specific date range
ical list -f "2026-03-03" -t "2026-03-07" -o json

# Filter by specific calendar
ical list -f today -t today -c "Work" -o json

Show event details

ical show --id "<full-event-id>" -o json

Create events

# Basic event
ical add "Sprint Planning" -s "2026-03-03 10:00" -e "2026-03-03 11:00" -c "Work"

# With location and notes
ical add "Dentist" -s "2026-03-05 14:00" -e "2026-03-05 15:00" -l "123 Main St" -n "Annual checkup"

# All-day event
ical add "PTO" -s "2026-03-10" -a -c "Work"

# With alert
ical add "Deploy window" -s "2026-03-03 16:00" -e "2026-03-03 17:00" --alert 15m

# Recurring event
ical add "Weekly standup" -s "2026-03-03 09:00" -e "2026-03-03 09:30" -r weekly --repeat-days "mon,wed,fri"

Update events

Read the full file on GitHub · 149 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.

2mo ago First seen · 149 lines · 34 tokens per session scan A 4c33d366341c

Subscribe to this mod's changes

calendar is a skill published in the GitHub repository ericboehs/claude-plugins (2 stars, last pushed 2mo ago), licensed MIT. It adds 34 tokens to every session and 1,288 once invoked, about $0.0001 per session on Opus 5.5. A static security scan graded it A with 0 findings. No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-31.

Productivity

calendar next to 6 skills from other repositories
Mod	Type	Stars	Last push	Licence	Scan	Tokens	Works with
calendarericboehs/claude-plugins	Skill	2	2mo ago	MIT	A	34	Claude Code
orbit-notionnexu-io/open-design	Skill	106k	today	Apache-2.0	A	117	Claude Code, Codex
agentmailpaperclipai/paperclip	Skill	112k	today	MIT	A	30	Claude Code, Codex
Cortexdanielmiessler/LifeOS	Skill	20k	2d ago	MIT	A	184	Claude Code
rowboat-spacesrowboatlabs/rowboat	Skill	18k	today	Apache-2.0	A	60	Claude Code, Codex
feishuHmbown/CodeWhale	Skill	41k	6d ago	MIT	A	33	Claude Code, Codex
pinchtab-mcppinchtab/pinchtab	Skill	11k	11d ago	MIT	A	52	Claude Code, Codex