What is e2e-testing-automation?

A guide to end-to-end testing, which checks a complete user journey through the interface and backend as a real user would experience it. It uses browser tools such as Selenium, Cypress, or Playwright.

Use it to automate browser interactions, test multi-step workflows, check different browsers and devices, and run deployment smoke tests.

It finds integration failures that isolated tests can miss, such as broken sign-up, login, checkout, or form flows. It also helps catch regressions after interface changes.

e2e-testing-automation — Skill for Claude Code and Codex by aj-geddes

Install

Getting it into your agent

One page per mod, every tool's command on it. A separate URL per tool would split the same page into five that compete with each other.

Any agent

npx skills add aj-geddes/useful-ai-prompts --skill e2e-testing-automation

Clone the repo

git clone --depth 1 https://github.com/aj-geddes/useful-ai-prompts

Made for: Claude Code, Codex.

Wrote this? Show the measurements

A badge with what this costs and how it scanned, read live from this page, so it follows the numbers instead of freezing them. Markdown for a README, HTML for a documentation site or a project page.

README.md

[![agentmods](https://agentmods.dev/badge/skills/aj-geddes/useful-ai-prompts/e2e-testing-automation/github.svg)](https://agentmods.dev/skills/aj-geddes/useful-ai-prompts/e2e-testing-automation)

Your own site

<a href="https://agentmods.dev/skills/aj-geddes/useful-ai-prompts/e2e-testing-automation"><img src="https://agentmods.dev/badge/skills/aj-geddes/useful-ai-prompts/e2e-testing-automation/github.svg" alt="Measured on agentmods" height="20"></a>

Or the 80×15 button, for a site that already has a row of RSS and ATOM ones. Only the verdict fits; the numbers stay here.

Your own site · 80×15

<a href="https://agentmods.dev/skills/aj-geddes/useful-ai-prompts/e2e-testing-automation"><img src="https://agentmods.dev/badge/skills/aj-geddes/useful-ai-prompts/e2e-testing-automation.svg" alt="Reviewed on agentmods" width="80" height="20"></a>

Per session 46 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.

When invoked 754 The whole file, excluding the scripts and references it only reads on demand.

Security scan A 0 findings. A grade says what 26 rules found in the file — not that it is safe. Third-party audits

Socket pass 16 Sept 2026
Snyk pass 16 Sept 2026

How audits are shown

Origin original No closer match found in the catalogue.

Token cost

What it costs to keep this loaded

Counted locally with the o200k_base tokenizer, which is exact for GPT models; Claude uses its own tokenizer and its counts differ. Treat this as one consistent yardstick across the catalogue rather than a bill. Prices are per million input tokens.

Model	Per session	Once invoked
Fable 5.1	$0.00046	$0.00754
Opus 5.5	$0.00018	$0.00302
Sonnet 5.5	$0.00009	$0.00151
Haiku 4.5	$0.00005	$0.00075

Measured 2mo ago against content hash 4ed4a42498fa, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

e2e-testing-automation scanned grade A with 0 findings against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured 2mo ago.

The scan reads SKILL.md. This mod also ships 2 executable files (scripts/scaffold-tests.sh, templates/test-template.js), listed below but not scanned — reading those needs a real analyzer, not pattern matching.

A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.

Nothing flagged

None of the 26 patterns this scan looks for appear in this file: no shell pipes, no recursive deletes, no credential paths, no hidden text, no instruction-override or anti-refusal phrasing, no agent-config snooping. That is not a guarantee, it is the absence of the things that are checkable.

skills/e2e-testing-automation/SKILL.md · 100 lines

How it starts

The opening of the file, as written. The whole thing — 100 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Overview

End-to-end (E2E) testing validates complete user workflows from the UI through all backend systems, ensuring the entire application stack works together correctly from a user's perspective. E2E tests simulate real user interactions with browsers, handling authentication, navigation, form submissions, and validating results.

When to Use

Testing critical user journeys (signup, checkout, login)
Validating multi-step workflows
Testing across different browsers and devices
Regression testing for UI changes
Verifying frontend-backend integration
Testing with real user interactions (clicks, typing, scrolling)
Smoke testing deployments

Quick Start

Minimal working example:

// tests/e2e/checkout.spec.ts
import { test, expect, Page } from "@playwright/test";

test.describe("E-commerce Checkout Flow", () => {
  let page: Page;

  test.beforeEach(async ({ page: p }) => {
    page = p;
    await page.goto("/");
  });

  test("complete checkout flow as guest user", async () => {
    // 1. Browse and add product to cart
    await page.click("text=Shop Now");
    await page.click('[data-testid="product-1"]');
    await expect(page.locator("h1")).toContainText("Product Name");

    await page.click('button:has-text("Add to Cart")');
    await expect(page.locator(".cart-count")).toHaveText("1");

    // 2. Go to cart and proceed to checkout
    await page.click('[data-testid="cart-icon"]');
    await expect(page.locator(".cart-item")).toHaveCount(1);
    await page.click("text=Proceed to Checkout");

// ... (see reference guides for full implementation)

Reference Guides

Detailed implementations in the references/ directory:

Guide	Contents
Playwright E2E Tests	Playwright E2E Tests
Cypress E2E Tests	Cypress E2E Tests
Selenium with Python (pytest)	Selenium with Python (pytest)
Page Object Model Pattern	Page Object Model Pattern

Read the full file on GitHub · 100 lines

Files

What ships with it

6 files beside SKILL.md in the same directory: the scripts, references and assets a skill reads on demand. Not counted in the per-session cost; read them before you install if any of them is executable.

Changes

What this file has done since we first saw it

Hashed on every crawl. A supply-chain change to an agent config is a question of when, not whether, so the history is kept rather than the latest state alone.

2mo ago First seen · 100 lines · 46 tokens per session scan A 4ed4a42498fa

Subscribe to this mod's changes

e2e-testing-automation is a skill published in the GitHub repository aj-geddes/useful-ai-prompts (376 stars, last pushed 8mo ago), licensed MIT. It adds 46 tokens to every session and 754 once invoked, about $0.0002 per session on Opus 5.5. A static security scan graded it A with 0 findings. No closer match exists in the catalogue, so it is treated as the original; first seen 2026-09-03.

Browser automation E2E testing Testing

e2e-testing-automation next to 6 skills from other repositories
Mod	Type	Stars	Last push	Licence	Scan	Tokens	Works with
e2e-testing-automationaj-geddes/useful-ai-prompts	Skill	376	8mo ago	MIT	A	46	Claude Code, Codex
browsegarrytan/gstack	Skill	140k	yesterday	MIT	B	32	Claude Code
cua-driverdavidondrej/skills	Skill	4.3k	3d ago	MIT	A	68	Claude Code, Codex
create-verification-skillget-bb/bb	Skill	4.9k	yesterday	MIT	A	57	Claude Code, Codex
browser-qahashgraph-online/awesome-codex-plugins	Skill	1.5k	yesterday	Apache-2.0	A	58	Claude Code, Codex
webapp-testinganthropics/skills	Skill	188k	9d ago	none	A	35	Claude Code
test-electron-appPostHog/posthog-foss	Skill	728	yesterday	MIT	A	112	Claude Code

e2e-testing-automation