webapp-test

Automate end-to-end Playwright testing of localhost web applications across multiple phases.

26|2|Updated Feb 12, 2026
One-click install
npx skills add https://github.com/sburl/CrossCheck --skill webapp-test
Or copy as Structured Prompt for Agent
Please help me install this Agent Skill.
Skill: webapp-test
Source: https://github.com/sburl/CrossCheck/tree/main/codex/skills/webapp-test
Command: npx skills add https://github.com/sburl/CrossCheck --skill webapp-test

SYSTEM DOCUMENTATION & REQUIREMENTS

What problem does it solve?

Web apps often require repetitive end-to-end validation across UI, interactions, and visual appearance. This skill automates that workflow, reducing manual QA time and human error.

Core Features & Use Cases

  • Automated reconnaissance: detect running localhost app and gather baseline information.
  • Selector discovery and interaction testing: identify interactive elements, perform clicks/types, and verify outcomes.
  • Visual regression checks: compare current UI against baseline screenshots to detect changes.
  • Use Case: When you push code changes, run the webapp-test skill to validate UI stability and flow.

Quick Start

Run the /webapp-test command to execute the full test suite against your running localhost app.

Frequently Asked Questions about webapp-test

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

FAQPage Schema
How do I automate end-to-end testing for a web app running on localhost?

Automated end-to-end testing for localhost web apps is handled by executing a full test suite that validates UI behavior, interactions, and visual stability. The process orchestrates reconnaissance, selector discovery, interaction testing, and visual regression checks.

Can I run visual regression checks to compare UI changes against baseline screenshots?

Visual regression checks compare the current UI against stored baseline screenshots to detect visual changes. This phase identifies visual instability automatically, reducing manual QA time and human error when validating web application updates.

What is the best way to automate Playwright testing for UI interactions and DOM selectors?

Playwright testing for UI interactions and DOM selectors is automated through a phase-based workflow that identifies interactive elements, performs clicks and types, and verifies outcomes. This approach validates UI flows and interaction stability.

Do I need a running localhost server before starting automated web app testing?

A running localhost server is required for automated web app testing, but the workflow includes optional server startup as a prerequisite. It also manages headless execution, timeouts, and artifact cleanup during the testing process.

How does automated reconnaissance work when validating a web application?

Automated reconnaissance detects the running localhost web application and gathers baseline information. This initial phase establishes the testing context, enabling subsequent selector discovery, interaction testing, and visual regression validation.

What limitations should I expect with automated Playwright web app testing?

Automated Playwright web app testing limitations include dependencies on configured timeouts and headless execution parameters. Artifact management and cleanup are handled automatically, but baseline handling requires proper setup for visual regression comparisons.