gcp-login

Authenticate to Google Cloud Platform using Application Default Credentials. Use when user selects GCP from cloud provider selection, or says "login to GCP", "gcloud auth", "authenticate to Google Cloud".

allowed_tools: Bash, Read, AskUserQuestion

$ Installer

git clone https://github.com/brianclaridge/.claude /tmp/.claude && cp -r /tmp/.claude/skills/gcp-login ~/.claude/skills/-claude

// tip: Run this command in your terminal to install the skill

SKILL.md

View on GitHub →

name: gcp-login description: Authenticate to Google Cloud Platform using Application Default Credentials. Use when user selects GCP from cloud provider selection, or says "login to GCP", "gcloud auth", "authenticate to Google Cloud". allowed-tools: Bash, Read, AskUserQuestion

GCP Login Skill

Authenticate to Google Cloud Platform using gcloud auth login --update-adc.

Activation Triggers

/auth-gcp slash command
User says: "login to GCP", "gcloud auth", "authenticate to GCP"

Prerequisites

gcloud CLI installed and in PATH
Environment variables in .env (optional):
- GOOGLE_CLOUD_PROJECT - GCP project ID for quota project
- GCLOUD_EMAIL_ADDRESS - Email for bucket policy bindings

Usage

Human CLI

# Authenticate to GCP
./scripts/gcp-auth.ps1

# Force re-authentication
./scripts/gcp-auth.ps1 -Force

Claude Agent

# Via skill invocation
uv run --directory ${CLAUDE_PATH} python -m claude_apps.skills.gcp_login [--force]

Auth URL Detection

The skill captures and displays the authentication URL:

Field	Value
URL	https://accounts.google.com/o/oauth2/auth?...

Workflow

Check if already authenticated (skip if valid, unless --force)
Set project from GOOGLE_CLOUD_PROJECT env var if available
Run gcloud auth login --update-adc --no-launch-browser
Display auth URL for user to open in browser
Verify authentication success

Code Structure

apps/src/claude_apps/skills/gcp_login/
├── __init__.py
├── __main__.py    # Entry point
└── auth.py        # GCloud auth with URL detection