calendar

calendar is a skill for Claude Code, Codex from wende/macbeth. It costs 13 tokens per session (132 once invoked), scanned A, original, MIT.

A tool for managing Apple Calendar, the built-in app for scheduling events and appointments.

In plain words
What is it for?
Listing upcoming events and creating events with a title, start time, and end time.
Why use it?
It reduces manual calendar entry and lets you inspect upcoming events through an automated workflow.

Skill for Claude CodeCodex

Written for no agent in particular: nothing here depends on one.

Good fit Listing upcoming events and creating events with a title, start time, and end time.

Compare 6 skills from other repositories ↓
Install with agentmods
npx agentmods add skills/wende/macbeth/calendar
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 wende/macbeth --skill calendar
Clone the repo
git clone --depth 1 https://github.com/wende/macbeth

Made for: Claude Code, Codex.

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.

agentmods badge for calendar

README.md
[![agentmods](https://agentmods.dev/badge/skills/wende/macbeth/calendar/github.svg)](https://agentmods.dev/skills/wende/macbeth/calendar)
Your own site
<a href="https://agentmods.dev/skills/wende/macbeth/calendar"><img src="https://agentmods.dev/badge/skills/wende/macbeth/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.

agentmods 80×15 button for calendar

Your own site · 80×15
<a href="https://agentmods.dev/skills/wende/macbeth/calendar"><img src="https://agentmods.dev/badge/skills/wende/macbeth/calendar.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 13 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 132 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.

ModelPer sessionOnce invoked
Fable 5.1 $0.00013 $0.00132
Opus 5.5 $0.00005 $0.00053
Sonnet 5.5 $0.00003 $0.00026
Haiku 4.5 $0.00001 $0.00013

Measured 1mo ago against content hash de4cffc1c389, 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 1mo ago.

The scan reads SKILL.md. This mod also ships 2 executable files (scripts/create-event.mjs, scripts/list-events.mjs), listed below but not scanned — reading those needs a real analyzer, not pattern matching.

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.

skills/Calendar/SKILL.md · 26 lines

What it actually says

Calendar Automation

Connect

connect_app({ name: "Calendar" })

Backends

  • Primary: EventKit bridge (client/native/apple_data.swift)
  • Integration: Shortcuts for custom calendar workflows

Runnable Scripts

  • list-events.mjs — list upcoming events
  • create-event.mjs — create an event with title/start/end

Gotchas

  1. First run prompts for Calendar access.
  2. Times should be ISO 8601.
  3. This v1 skill intentionally avoids delete/remove operations.
Files

What ships with it

2 files beside SKILL.md in the same directory: the scripts, references and assets a skill reads on demand. Not counted in the per-session cost; read them before you install if any of them is executable.

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. 1mo ago First seen · 26 lines · 13 tokens per session scan A de4cffc1c389

Subscribe to this mod's changes

calendar is a skill published in the GitHub repository wende/macbeth (4 stars, last pushed 27d ago), licensed MIT. It adds 13 tokens to every session and 132 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.

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