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".

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Install this agent skill to your Project

npx add-skill https://github.com/majiayu000/claude-skill-registry/tree/main/skills/development/gcp-login

SKILL.md

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

powershell

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

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

Claude Agent

bash

# 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