Agent Skills: GCP Login Skill

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

1. Check if already authenticated (skip if valid, unless --force)
2. Set project from GOOGLE_CLOUD_PROJECT env var if available
3. Run gcloud auth login --update-adc --no-launch-browser
4. Display auth URL for user to open in browser
5. 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