What is setup-calendar?

A setup skill that installs and configures ical, a command-line tool for managing Apple Calendar on macOS. It checks the installation, requests Calendar permission, and verifies access.

Use it when preparing a new Mac for Apple Calendar management, or when ical is installed but lacks permission.

It guides you through the command-line tool and macOS permission steps needed before calendar actions can work. It avoids reinstalling ical when it is already working.

setup-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 setup-calendar

Clone the repo

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

Made for: Claude Code.

Or install apple-calendar-setup, 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/setup-calendar/github.svg)](https://agentmods.dev/skills/ericboehs/claude-plugins/setup-calendar)

Your own site

<a href="https://agentmods.dev/skills/ericboehs/claude-plugins/setup-calendar"><img src="https://agentmods.dev/badge/skills/ericboehs/claude-plugins/setup-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/setup-calendar"><img src="https://agentmods.dev/badge/skills/ericboehs/claude-plugins/setup-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 370 The whole file, excluding the scripts and references it only reads on demand.

Security scan C 2 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	$0.00370
Opus 5.5	$0.00014	$0.00148
Sonnet 5.5	$0.00007	$0.00074
Haiku 4.5	$0.00003	$0.00037

Measured 2mo ago against content hash b48521424c97, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade C, and why

setup-calendar scanned grade C with 2 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.

Downloads and executes remote codehighSupply chain

curl | sh runs whatever the server returns today, which is not necessarily what it returned when this was reviewed.

curl -fsSL https://ical.sidv.dev/install | bash

Makes network callslowCapability

Not a fault in itself. Listed so you know the mod talks to something, and to what.

curl -fsSL https://ical.sidv.dev/install | bash

plugins/apple-calendar-setup/skills/setup-calendar/SKILL.md · 58 lines

What it actually says

Setup Apple Calendar CLI

Guided installation of the ical CLI tool for managing Apple Calendar from the command line.

Step 1: Check Prerequisites

which ical && ical version

If ical is already installed, tell the user their calendar CLI is ready and suggest /calendar.

Step 2: Install ical

curl -fsSL https://ical.sidv.dev/install | bash

This installs the ical binary to /usr/local/bin/ical.

Step 3: Grant Calendar Access

The first time ical runs, macOS will prompt for Calendar access. Run a test command to trigger the permission dialog:

ical calendars

If the user sees a permissions error, guide them to:

Open System Settings > Privacy & Security > Calendars
Enable access for the terminal app they're using (Terminal, iTerm2, Ghostty, etc.)
Re-run ical calendars

Step 4: Verify

# List calendars
ical calendars

# Show today's events
ical today -o json

If both commands succeed, the setup is complete. Suggest the user try /calendar.

Behavior

Run through steps sequentially, checking what's already done
Don't reinstall if ical is already present and working
If ical is installed but calendar access is denied, focus on the permissions step
After successful setup, suggest /calendar to start using it

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 · 58 lines · 34 tokens per session scan C b48521424c97

Subscribe to this mod's changes

setup-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 370 once invoked, about $0.0001 per session on Opus 5.5. A static security scan graded it C with 2 findings (downloads and executes remote code, makes network calls). No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-31.

Productivity

setup-calendar next to 6 skills from other repositories
Mod	Type	Stars	Last push	Licence	Scan	Tokens	Works with
setup-calendarericboehs/claude-plugins	Skill	2	2mo ago	MIT	C	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

setup-calendar