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calendar-management

calendar-management is a skill for Claude Code from PsychQuant/che-ical-mcp. It costs 38 tokens per session (1,927 once invoked), scanned A, original, MIT.

A usage guide for managing events and reminders in macOS Calendar and Reminders through che-ical-mcp.

In plain words
What is it for?
Use it to view, search, create, update, and check conflicts for calendar events, and to list or manage reminders.
Why use it?
It helps avoid invalid dates, conflicting changes, and edits made without first checking the existing schedule or task lists.

Skill for Claude Code

Written for Claude Code: allowed-tools in frontmatter.

Part of the che-ical-mcp plugin — 3 skills, 5 commands, 2 hooks shipped together

not rated 41repo changed yesterday A scan SkillSpector: pass 38 tokens original MIT

Good fit Use it to view, search, create, update, and check conflicts for calendar events, and to list or manage reminders.

Compare 6 skills from other repositories ↓
Install with agentmods
npx agentmods add skills/psychquant/che-ical-mcp/calendar-management
View source ↗ PsychQuant/che-ical-mcp
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 PsychQuant/che-ical-mcp --skill calendar-management
Clone the repo
git clone --depth 1 https://github.com/PsychQuant/che-ical-mcp

Made for: Claude Code.

Or install che-ical-mcp, the plugin that ships this one along with the rest of its 3 skills, 5 commands, 2 hooks.

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-management

README.md
[![agentmods](https://agentmods.dev/badge/skills/psychquant/che-ical-mcp/calendar-management/github.svg)](https://agentmods.dev/skills/psychquant/che-ical-mcp/calendar-management)
Your own site
<a href="https://agentmods.dev/skills/psychquant/che-ical-mcp/calendar-management"><img src="https://agentmods.dev/badge/skills/psychquant/che-ical-mcp/calendar-management/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-management

Your own site · 80×15
<a href="https://agentmods.dev/skills/psychquant/che-ical-mcp/calendar-management"><img src="https://agentmods.dev/badge/skills/psychquant/che-ical-mcp/calendar-management.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 38 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 1,927 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. Third-party audits
  • NVIDIA SkillSpector pass 7 Sept 2026
How audits are shown
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 $0.00038 $0.01927
Opus 5.5 $0.00015 $0.00771
Sonnet 5.5 $0.00008 $0.00385
Haiku 4.5 $0.00004 $0.00193

Measured yesterday against content hash b9539f883615, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

calendar-management 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 yesterday.

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.

plugin/skills/calendar-management/SKILL.md · 156 lines

How it starts

The opening of the file, as written. The whole thing — 156 lines — stays where its author put it; the contents beside it link to each section on GitHub.

macOS Calendar & Reminders Management

This skill guides you through effective use of che-ical-mcp for calendar and task management on macOS.

Date/Time Format

CRITICAL: Always use ISO8601 format with timezone for all date/time parameters:

2026-01-18T14:00:00+08:00  (correct)
2026-01-18 14:00           (wrong - will fail)

Use the user's local timezone. For Taiwan: +08:00. An event module's events follow the module (a conference's sessions use the conference's zone; its all-day umbrella takes date-only values).

Tool Categories

1. Discovery (Start Here)

Before creating or modifying, always check existing state:

list_calendars          → See all calendars and their sources
list_events_quick       → Quick view: "today", "this_week", "next_7_days"
list_reminders          → See tasks by list or completion status

2. Events (Calendar)

Task Tool Key Parameters
View schedule list_events start_date, end_date, calendar_name
Quick view list_events_quick range: "today", "tomorrow", "this_week", week_starts_on
Create event create_event title, start_time, end_time, calendar_name (required)
Search search_events keyword/keywords, match_mode ("any"/"all")
Check availability check_conflicts start_time, end_time

Week Start Day (v0.8.2+): For this_week/next_week ranges, use week_starts_on:

  • system (default): Use system locale
  • monday: ISO 8601 (Europe, Asia)
  • sunday: US, Japan
  • saturday: Middle East

3. Reminders (Tasks)

Task Tool Key Parameters
List tasks list_reminders calendar_name, completed (JSON boolean; omit/null = all; strings/numbers rejected)
Create task create_reminder title, calendar_name (required), due_date (bare YYYY-MM-DD = date-only, no time)
Complete complete_reminder reminder_id, completed (JSON boolean, default true; strings/numbers rejected)

Read the full file on GitHub · 156 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. yesterday Changed · +2 lines b9539f883615
  2. 3d ago Changed · +2 lines 6a0b00a60a3c
  3. 18d ago Changed 7af11c71df58
  4. 1mo ago Changed · +2 lines 563db747c568
  5. 1mo ago Changed · +2 lines 6c6ef53273b7
  6. 1mo ago Changed · +22 lines 3613e50cd39d
  7. 1mo ago First seen · 126 lines · 38 tokens per session scan A 7ed0c4ee0130

Subscribe to this mod's changes

calendar-management is a skill published in the GitHub repository PsychQuant/che-ical-mcp (41 stars, last pushed yesterday), licensed MIT. It adds 38 tokens to every session and 1,927 once invoked, about $0.0002 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 2026-08-30.

Productivityautomationcalendarclaudeeventkiticalmacos
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