What is google-calendar?

A guide for managing Google Calendar events through the Google Calendar API, including events on personal, work, and shared calendars.

Use it to review schedules, add or update meetings, delete events, check free time, and place personal, work, or shared events on the right calendar.

It provides one process for listing, creating, changing, removing, and checking availability for calendar events across different calendars.

google-calendar — Skill for Claude Code and Codex by ahkedia

Install

Getting it into your agent

It runs from inside its repository, so the clone comes first — what it calls does not travel with the file alone.

Clone the repo

git clone --depth 1 https://github.com/ahkedia/lyra-ai

agentmods

npx agentmods add skills/ahkedia/lyra-ai/google-calendar

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.

README.md

[![agentmods](https://agentmods.dev/badge/skills/ahkedia/lyra-ai/google-calendar/github.svg)](https://agentmods.dev/skills/ahkedia/lyra-ai/google-calendar)

Your own site

<a href="https://agentmods.dev/skills/ahkedia/lyra-ai/google-calendar"><img src="https://agentmods.dev/badge/skills/ahkedia/lyra-ai/google-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/ahkedia/lyra-ai/google-calendar"><img src="https://agentmods.dev/badge/skills/ahkedia/lyra-ai/google-calendar.svg" alt="Reviewed on agentmods" width="80" height="20"></a>

Per session 30 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.

When invoked 895 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.

Model	Per session	Once invoked
Fable 5.1	$0.00030	$0.00895
Opus 5	$0.00015	$0.00447
Sonnet 5	$0.00006	$0.00179
Haiku 4.5	$0.00003	$0.00089

Measured 10d ago against content hash 102600e131bc, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-10, 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 10d 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.

skills/google-calendar/SKILL.md · 122 lines

How it starts

The opening of the file, as written. The whole thing — 122 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Google Calendar via API

Direct Google Calendar API v3 integration. Replaces the old Apple Calendar/osascript approach (Mac-only).

Available Calendars

Calendar	Calendar ID	Use for
Primary	`primary`	Akash's default personal events
Work	`work` (or the actual calendar ID)	Work meetings, blocks, focus time
Akash & Abhigna	(shared calendar ID from env)	Joint events: trips, date nights, shared appointments

Set GCAL_WORK_ID and GCAL_SHARED_ID in .env for non-primary calendars.

Routing Rules

Joint event (both Akash and Abhigna) → Akash & Abhigna (shared calendar)
Work meeting / focus block → Work
Akash personal → Primary
If unsure and involves Abhigna → Akash & Abhigna

Time Zone

All times are in Europe/Berlin (CET/CEST) unless the user specifies otherwise. The helper script defaults to this timezone.

Operations

All operations use the helper script at scripts/gcal-helper.js.

List Events

node scripts/gcal-helper.js list --from "2026-03-18" --to "2026-03-25"

Optional: --calendar primary|work|shared (defaults to all calendars).

Create Event

node scripts/gcal-helper.js create \
  --title "Dinner with team" \
  --date "2026-03-20" \
  --time "19:00" \
  --duration 90 \
  --calendar primary

Optional flags:

--location "Restaurant Name, Berlin"
--description "Notes about the event"
--all-day (omit --time and --duration for all-day events)

Create All-Day Event

node scripts/gcal-helper.js create \
  --title "Trip to Munich" \
  --date "2026-03-22" \
  --all-day \
  --calendar shared

Check Free/Busy

node scripts/gcal-helper.js free --date "2026-03-20"

Shows busy slots and available windows for the given day across all calendars.

Update Event

node scripts/gcal-helper.js update \
  --event-id "abc123" \
  --title "Updated Title" \
  --time "15:00" \
  --duration 60

Read the full file on GitHub · 122 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.

10d ago First seen · 122 lines · 30 tokens per session scan A 102600e131bc

Subscribe to this mod's changes

google-calendar is a skill published in the GitHub repository ahkedia/lyra-ai (5 stars, last pushed 21d ago), licensed MIT. It adds 30 tokens to every session and 895 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 2026-08-31.

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