e2e-testing-standards

e2e-testing-standards is a skill for Claude Code from LiorCohen/sdd. It costs 26 tokens per session (1,226 once invoked), scanned A, original, no licence file.

A browser-based end-to-end testing setup using Playwright, a tool that controls browsers to check complete user flows. It also covers visual regression, which compares screenshots to detect unwanted changes, and test data management.

In plain words
What is it for?
It is for automating browser tests, checking page appearance across changes, and preparing or managing the data those tests need.
Why use it?
It helps catch problems that unit tests may miss by checking the application as a user would use it. It also reduces the work of handling browser checks, screenshot comparisons, and test data.

Skill for Claude Code

Written for Claude Code: user-invocable in frontmatter.

Part of the sdd plugin — 47 skills, 3 commands, 7 agents shipped together

Good fit It is for automating browser tests, checking page appearance across changes, and preparing or managing the data those tests need.

Compare 6 skills from other repositories ↓
Install with agentmods
npx agentmods add skills/liorcohen/sdd/e2e-testing-standards
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 LiorCohen/sdd --skill e2e-testing-standards
Clone the repo
git clone --depth 1 https://github.com/LiorCohen/sdd

Made for: Claude Code.

Or install sdd, the plugin that ships this one along with the rest of its 47 skills, 3 commands, 7 agents.

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.

agentmods badge for e2e-testing-standards

README.md
[![agentmods](https://agentmods.dev/badge/skills/liorcohen/sdd/e2e-testing-standards/github.svg)](https://agentmods.dev/skills/liorcohen/sdd/e2e-testing-standards)
Your own site
<a href="https://agentmods.dev/skills/liorcohen/sdd/e2e-testing-standards"><img src="https://agentmods.dev/badge/skills/liorcohen/sdd/e2e-testing-standards/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.

agentmods 80×15 button for e2e-testing-standards

Your own site · 80×15
<a href="https://agentmods.dev/skills/liorcohen/sdd/e2e-testing-standards"><img src="https://agentmods.dev/badge/skills/liorcohen/sdd/e2e-testing-standards.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 26 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 1,226 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.
Origin unknown 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.

ModelPer sessionOnce invoked
Fable 5.1 $0.00026 $0.01226
Opus 5.5 $0.00010 $0.00490
Sonnet 5.5 $0.00005 $0.00245
Haiku 4.5 $0.00003 $0.00123

Measured 1mo ago against content hash 0fc21fc2cd8f, 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-standards 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 1mo ago.

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.

plugin/fullstack-typescript/skills/components/e2e-testing/e2e-testing-standards/SKILL.md · 170 lines

The source is not reproduced here

No licence file

A repository with no LICENSE is all rights reserved by default, so the body is not copied here. The metadata, the measurements and the link are.

Read it on GitHub

Files

What ships with it

4 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.

  1. 1mo ago First seen · 170 lines · 26 tokens per session scan A 0fc21fc2cd8f

Subscribe to this mod's changes

e2e-testing-standards is a skill published in the GitHub repository LiorCohen/sdd (43 stars, last pushed 7mo ago), with no licence file. It adds 26 tokens to every session and 1,226 once invoked, about $0.0001 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 2026-08-30.

Related

Other skills, from other repositories

checking-a-page

Check that a web page you wrote or changed actually works, by opening it in a browser and driving every control on it. Use after creating or editing an HTML page, or the JavaScript or CSS that a page loads.

awss1i/assay · 49 tokens

proof-e2e

Build E2E test specs for critical user journeys — Playwright or Cypress, page objects, setup/teardown, CI config. Use when asked to "write E2E tests", "end-to-end testing", "browser tests", "UI tests", or "Playwright tests".

tonone-ai/tonone · 63 tokens

verify

Verifies the running application against PRD screen specs and acceptance criteria in a browser. This skill should be used when the user asks to "run visual verification", "verify the app against the PRD", "run Stage 6V", "check the running app", "verify screens match specs", "run live app verification", "test the…

VoxTechnologies/transmute-framework · 100 tokens

playwright

Browser automation and end-to-end testing with Playwright. Use when building/testing frontends, automating user workflows, taking screenshots, validating UI state, filling forms, testing across browsers, or mentions "playwright", "E2E test", "browser automation", "screenshot".

saitarrun/Devforge-ai · 60 tokens

e2e-testing-patterns

Master end-to-end testing with Playwright and Cypress to build reliable test suites that catch bugs, improve confidence, and enable fast deployment. Use when implementing E2E tests, debugging flaky tests, or establishing testing standards.

wshobson/agents · 51 tokens

test-site

Tests a deployed, activated Power Pages site at runtime using browser-based navigation, page crawling, and API request verification via Playwright. Use when the user wants to test, verify, or smoke-test their deployed site.

microsoft/power-platform-skills · 46 tokens