A command-line tool for managing Google Calendar from a terminal window. A command-line tool is controlled by typed commands instead of a graphical interface.

Use it to list calendars, view or change events, create events, and check availability for a Google account.

It lets developers work with calendars and events from scripts or the terminal after setting up Google’s sign-in permissions.

gccli — Skill for Claude Code and Codex by badlogic

About the project

badlogic/pi-skills is a collection of reusable skills that extend pi-coding-agent and work with several other coding agents. Developers use it to give agents capabilities such as web search, browser automation, Google service access, transcription, VS Code integration, and YouTube transcript retrieval.

badlogic/pi-skills · 2,501 stars · on GitHub

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 badlogic/pi-skills --skill gccli

Clone the repo

git clone --depth 1 https://github.com/badlogic/pi-skills

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/badlogic/pi-skills/gccli/github.svg)](https://agentmods.dev/skills/badlogic/pi-skills/gccli)

Your own site

<a href="https://agentmods.dev/skills/badlogic/pi-skills/gccli"><img src="https://agentmods.dev/badge/skills/badlogic/pi-skills/gccli/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/badlogic/pi-skills/gccli"><img src="https://agentmods.dev/badge/skills/badlogic/pi-skills/gccli.svg" alt="Reviewed on agentmods" width="80" height="20"></a>

Per session 21 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.

When invoked 556 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 warn 7 Sept 2026

SkillSpector: 3 findings, up to high

These are SkillSpector’s own severities. On a checked sample its high-severity flags on skills were ~96% false positives — a documented command, a public API, a “never do X” rule — so we show them as a caution to read, not a verdict. Why →

high Privilege Escalation · line 40
Code accesses credential files (SSH keys, AWS credentials, etc.). This could indicate credential theft attempts.

Fix: Remove references to credential paths. Use environment variables or secrets managers. For docs, use placeholder paths (e.g., /path/to/config). Never load .env or token files in production code paths.
high Privilege Escalation · line 63
Code accesses credential files (SSH keys, AWS credentials, etc.). This could indicate credential theft attempts.

Fix: Remove references to credential paths. Use environment variables or secrets managers. For docs, use placeholder paths (e.g., /path/to/config). Never load .env or token files in production code paths.
medium Rogue Agent · line 20
Skill establishes unauthorized persistence across sessions via cron jobs, startup scripts, or state files. Session persistence allows an attacker to maintain access beyond the current interaction.

Fix: Remove any persistence mechanisms (cron jobs, startup scripts, state files). Skills should not maintain state across sessions without explicit user consent.

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.

Model	Per session	Once invoked
Fable 5.1	$0.00021	$0.00556
Opus 5	$0.00010	$0.00278
Sonnet 5	$0.00004	$0.00111
Haiku 4.5	$0.00002	$0.00056

Measured 9d ago against content hash 3a687e1dcd42, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-09, from the pricing page.

Security

Grade A, and why

gccli 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 9d 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.

gccli/SKILL.md · 65 lines

What it actually says

Google Calendar CLI

Command-line interface for Google Calendar operations.

Installation

npm install -g @mariozechner/gccli

Setup

Google Cloud Console (one-time)

Create a new project (or select existing)
Enable the Google Calendar API
Set app name in OAuth branding
Add test users (all Gmail addresses you want to use)
Create OAuth client:
- Click "Create Client"
- Application type: "Desktop app"
- Download the JSON file

Configure gccli

First check if already configured:

gccli accounts list

If no accounts, guide the user through setup:

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

Usage

Run gccli --help for full command reference.

Common operations:

gccli <email> calendars - List all calendars
gccli <email> events <calendarId> [--from <dt>] [--to <dt>] - List events
gccli <email> event <calendarId> <eventId> - Get event details
gccli <email> create <calendarId> --summary <s> --start <dt> --end <dt> - Create event
gccli <email> freebusy <calendarIds> --from <dt> --to <dt> - Check availability

Use primary as calendarId for the main calendar.

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

~/.gccli/credentials.json - OAuth client credentials
~/.gccli/accounts.json - Account tokens

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.

9d ago First seen · 65 lines · 21 tokens per session scan A 3a687e1dcd42

Subscribe to this mod's changes

gccli is a skill published in the GitHub repository badlogic/pi-skills (2,501 stars, last pushed 3mo ago), licensed MIT. It adds 21 tokens to every session and 556 once invoked, about $0.0001 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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gccli