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.
npx skills add PsychQuant/che-ical-mcp --skill calendar-managementgit clone --depth 1 https://github.com/PsychQuant/che-ical-mcpWrote 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.
[](https://agentmods.dev/skills/psychquant/che-ical-mcp/calendar-management)<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.
<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>- NVIDIA SkillSpector pass
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 | $0.00038 | $0.01747 |
| Opus 5 | $0.00019 | $0.00873 |
| Sonnet 5 | $0.00008 | $0.00349 |
| Haiku 4.5 | $0.00004 | $0.00175 |
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 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.
How it starts
The opening of the file, as written. The whole thing — 152 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
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 localemonday: ISO 8601 (Europe, Asia)sunday: US, Japansaturday: 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 |
| Complete | complete_reminder |
reminder_id, completed (JSON boolean, default true; strings/numbers rejected) |
Every boolean argument on every tool (
all_day,clear_*,include_completed,dry_run,delete_original, …) is a strict JSON boolean (#207): strings and numbers are rejected; omit ornullkeeps the default.
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.
- 2d ago Changed · +2 lines 563db747c568
- 3d ago Changed · +2 lines 6c6ef53273b7
- 10d ago Changed · +22 lines 3613e50cd39d
- 11d ago First seen · 126 lines · 38 tokens per session scan A 7ed0c4ee0130
calendar-management is a skill published in the GitHub repository PsychQuant/che-ical-mcp (36 stars, last pushed 2d ago), licensed MIT. It adds 38 tokens to every session and 1,747 once invoked, about $0.0002 per session on Opus 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.
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