Jgccli

Google Calendar CLI (Java)

Command-line interface for Google Calendar operations. Java port of gccli.

Source: https://github.com/maxandersen/jgccli

Installation

Option 1: Run directly with JBang (no install)

jbang jgccli@maxandersen/skills --help

Option 2: Install as command

jbang app install jgccli@maxandersen/skills
jgccli --help

Setup

Google Cloud Console (one-time)

1. Create a new project (or select existing)
2. Enable the Google Calendar API
3. Set app name in OAuth branding
4. Add test users (all Gmail addresses you want to use)
5. Create OAuth client:

• Click "Create Client"
• Application type: "Desktop app"
• Download the JSON file

Configure jgccli

First check if already configured:

jgccli accounts list

If no accounts, guide the user through setup:

1. Ask if they have a Google Cloud project with Calendar API enabled
2. If not, walk them through the Google Cloud Console steps above
3. Have them download the OAuth credentials JSON
4. Run: jgccli accounts credentials ~/path/to/credentials.json
5. Run: jgccli accounts add (use --manual for browserless OAuth)

Shared Credentials

Credentials in ~/.jgcli/ are shared across jgccli, jgmcli, and jgdcli. Set up once, use with all three.

For separate credentials, use named credentials:

jgccli accounts credentials ~/work-creds.json --name work
jgccli accounts add work@company.com --credentials work

Usage

Run jgccli --help for full command reference.

Common operations:

• jgccli calendars - List all calendars
• jgccli events [--from ] [--to ] - List events
• jgccli event - Get event details
• jgccli create --summary --start --end - Create event
• jgccli freebusy --from --to - Check availability

Use primary as calendarId for the main calendar.

Attendees

# Required and optional attendees
jgccli create  primary --summary "Meeting" --start  --end  \
    --attendees required@x.com,also@x.com \
    --optional-attendees maybe@x.com,fyi@x.com

Date/Time Format

• Timed events: YYYY-MM-DDTHH:MM:SSZ (UTC) or YYYY-MM-DDTHH:MM:SS (local)
• All-day events: YYYY-MM-DD with --all-day flag

Data Storage

• ~/.jgcli/credentials.json - OAuth client credentials (shared with jgmcli, jgdcli)
• ~/.jgcli/accounts-calendar.json - Account tokens

Source & license

This open-source skill is cataloged on AgentStack and links to its original source — we do not rehost the code.

• Author: maxandersen
• Source: maxandersen/skills
• License: MIT

Install and usage instructions live in the source repository linked above.