cc-system: Skill for Claude Code

.claude/skills/google-calendar/SKILL.md

google-calendar is a skill for Claude Code from greatSumini/cc-system. It costs 97 tokens per session (1,626 once invoked), scanned A, original, MIT.

A coding-agent skill for managing Google Calendar through the `gog` command-line tool. It can work with events after the tool is installed and your Google account is authorised.

In plain words
What is it for?
Checking calendars and events for today, this week, or a chosen number of days; searching or changing events; and creating new events in Google Calendar.
Why use it?
It removes the need to remember the command-line syntax for checking, finding, creating, editing, and deleting calendar events. It also explains the setup needed when the tool or account access is missing.

Skill for Claude Code

Written for Claude Code: installed under .claude/.

This is greatSumini/cc-system's own configuration. It tells Claude Code how to work on cc-system itself, so it is not a mod to install elsewhere. Copy it as a starting point and replace the rules that are about this project. Everything cc-system configures →

Reuse

Borrowing it

Nothing to install: this file belongs to greatSumini/cc-system. Take a copy, put it at the same path in your own repository, and replace the rules that are about this project with yours.

Copy the file
curl -O https://raw.githubusercontent.com/greatSumini/cc-system/main/.claude/skills/google-calendar/SKILL.md
Clone the repo
git clone --depth 1 https://github.com/greatSumini/cc-system

Made for: Claude Code.

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 google-calendar

README.md
[![agentmods](https://agentmods.dev/badge/skills/greatsumini/cc-system/google-calendar.svg)](https://agentmods.dev/skills/greatsumini/cc-system/google-calendar)
Your own site
<a href="https://agentmods.dev/skills/greatsumini/cc-system/google-calendar"><img src="https://agentmods.dev/badge/skills/greatsumini/cc-system/google-calendar.svg" alt="Measured on agentmods" height="20"></a>
Per session 97 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 1,626 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 $0.00097 $0.01626
Opus 5 $0.00048 $0.00813
Sonnet 5 $0.00019 $0.00325
Haiku 4.5 $0.00010 $0.00163

Measured 8d ago against content hash b46da8538a12, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-07, from the pricing page.

Security

Grade A, and why

google-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 8d 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.

.claude/skills/google-calendar/SKILL.md · 227 lines

How it starts

The opening of the file, as written. The whole thing — 227 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Google Calendar — gogcli 기반 일정 조회/생성/관리

gogcli(gog) CLI를 사용하여 Google Calendar 일정을 조회, 검색, 생성, 수정, 삭제한다.

디렉토리 구조

google-calendar/
├── SKILL.md
└── references/
    └── gog-calendar-commands.md   # 주요 명령어 레퍼런스

스크립트 없이 gog CLI를 직접 실행한다.

플로우

1. gogcli 설치 확인

which gog

명령이 실패하면 사용자에게 설치를 안내한다:

gogcli 설치 안내

brew install gogcli

설치 완료 후 다시 시도해주세요.

설치가 확인되면 다음 단계로 진행한다.

2. 인증 확인

gog auth list

계정이 없으면 OAuth 설정을 안내한다:

Google Calendar 인증 설정 가이드

  1. Google Cloud Console에서 프로젝트 생성
  2. Google Calendar API 활성화
  3. OAuth 동의 화면 설정 → 테스트 사용자 추가
  4. OAuth 클라이언트 생성 → "Desktop app" → JSON 다운로드
  5. 터미널에서 아래 명령 실행:
gog auth credentials ~/Downloads/client_secret_....json
gog auth add <[email protected]> --services calendar

브라우저가 열리면 Google 계정으로 로그인하여 권한을 허용해주세요.

인증이 확인되면 GOG_ACCOUNT 환경변수 또는 --account 플래그로 계정을 지정한다.

3. 요청 분류 및 실행

사용자 요청을 아래 중 하나로 분류하여 실행한다. 캘린더 ID는 기본적으로 primary를 사용한다.

캘린더 목록 조회
gog calendar calendars --json
오늘 일정
gog calendar events primary --today --json
이번주 일정
gog calendar events primary --week --json
N일간 일정
gog calendar events primary --days <N> --json
특정 기간 일정
gog calendar events primary --from <시작일> --to <종료일> --json
  • 상대 날짜 지원: --from today --to friday
  • ISO 8601: --from 2026-04-01T00:00:00Z --to 2026-04-08T00:00:00Z
모든 캘린더의 일정
gog calendar events --all --today --json
일정 검색
gog calendar search "<키워드>" --today --json
gog calendar search "<키워드>" --days <N> --json

검색 기본 범위: 30일 전 ~ 90일 후 (--from/--to로 조정 가능)

일정 생성
gog calendar create primary \
  --summary "<일정 제목>" \
  --from <시작시간> \
  --to <종료시간> \
  [--attendees "[email protected],[email protected]"] \
  [--location "<장소>"] \
  [--send-updates all]

Read the full file on GitHub · 227 lines

Files

What ships with it

1 file 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. 8d ago First seen · 227 lines · 97 tokens per session scan A b46da8538a12

Subscribe to this mod's changes

google-calendar is a skill published in the GitHub repository greatSumini/cc-system (436 stars, last pushed 2mo ago), licensed MIT. It adds 97 tokens to every session and 1,626 once invoked, about $0.0005 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.