gstack

Automate web page interaction, testing, and visual validation with a persistent headless Chromium browser.

Updated May 4, 2026

Search Tags:#automation #screenshots #qa #diff #responsive #browser

Ready to run

npx skills add https://github.com/VIethoangnguyenle/nexus-enterprise --skill gstack-viethoangnguyenle

💬 Prompt for ChatGPT / Claude Chat▼

Please help me install this Agent Skill.
Skill: gstack
Source: https://github.com/VIethoangnguyenle/nexus-enterprise/tree/main/.agent/skills
Command: npx skills add https://github.com/VIethoangnguyenle/nexus-enterprise --skill gstack-viethoangnguyenle

SYSTEM DOCUMENTATION & REQUIREMENTS

💡 This Skill includes scripts (resource) and references (resource) components.

What problem does it solve?

This Skill provides immediate headless browser automation for QA, testing, and site validation, enabling rapid interaction and verification of web pages.

Core Features & Use Cases

Navigation & Testing: Open URLs, interact with page elements, and verify state without manual setup.
Screenshots & Diffing: Capture annotated screenshots, compare page versions, and test responsive layouts efficiently.
Use Case: Quickly verify a website deployment by navigating, capturing screenshots, and diffing before and after changes.

Quick Start

Use the gstack skill to load a page, take a screenshot, and compare versions with a single command.

Frequently Asked Questions about gstack

High-intent search queries and answers about installing and using this skill.

FAQPage Schema

How do I automate web page interaction and QA testing without manual browser setup?▼

Visual validation automates screenshot capture and diffing to compare page versions. It allows you to capture annotated screenshots and test responsive layouts efficiently to verify website deployments.

How do I capture screenshots and diff web page versions to verify changes?▼

What is the best way to test responsive layouts using a headless browser?▼

Yes, you can use browser control for site dogfooding by navigating URLs and verifying state. The headless browser persists between commands, allowing rapid interaction and visual validation without manual configuration.

Can I navigate URLs and inspect page elements for site dogfooding?▼

Do I need any external dependencies to run headless browser automation for visual validation?▼

You should not use headless browser automation when you need to manually observe dynamic visual interactions or debug complex client-side rendering issues that require real-time viewport inspection.