e2e-verify

e2e-verify is a skill for Claude Code from jh941213/codex-lattice. It costs 79 tokens per session (1,030 once invoked), scanned A, original, MIT.

A process for testing a finished feature through a real browser from the user's point of view. E2E means end-to-end: checking the complete flow rather than only individual functions.

In plain words
What is it for?
Use it after implementation and the project's standard verification checks to start the app, create browser tests with tools such as Playwright or Cypress, and verify success and error flows.
Why use it?
Unit tests and type checks may pass while clicks, forms, navigation, or visible results still fail in the running app. This checks that the full feature works in practice.

Skill for Claude Code

Written for Claude Code: allowed-tools in frontmatter.

Not installable on its own: it runs a file from its repository that does not travel with it. Clone the repository, or install whatever ships that file. The line is bash e2e/test_feature.sh.

Install

Getting it into your agent

There is no command for this one: it runs only inside a plugin, and the catalogue could not identify which plugin ships it. The source is linked below.

Made for: Claude Code.

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-verify

README.md
[![agentmods](https://agentmods.dev/badge/skills/jh941213/codex-lattice/e2e-verify.svg)](https://agentmods.dev/skills/jh941213/codex-lattice/e2e-verify)
Your own site
<a href="https://agentmods.dev/skills/jh941213/codex-lattice/e2e-verify"><img src="https://agentmods.dev/badge/skills/jh941213/codex-lattice/e2e-verify.svg" alt="Measured on agentmods" height="20"></a>
Per session 79 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 1,030 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. Scan, not verified.
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.

ModelPer sessionOnce invoked
Fable 5.1 $0.00079 $0.01030
Opus 5 $0.00039 $0.00515
Sonnet 5 $0.00016 $0.00206
Haiku 4.5 $0.00008 $0.00103

Measured 6d ago against content hash 1423abe07cf8, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-06, from the pricing page.

Security

Grade A, and why

e2e-verify 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 6d 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.

skills/e2e-verify/SKILL.md · 131 lines

How it starts

The opening of the file, as written. The whole thing — 131 lines — stays where its author put it; the contents beside it link to each section on GitHub.

E2E 피처 검증

개발 + /verify 완료 후, 구현한 피처가 실제 브라우저에서 동작하는지 E2E 테스트로 검증합니다.

전제 조건

  • /verify 통과 완료 (typecheck, lint, test, build)
  • 앱이 로컬에서 실행 가능한 상태

워크플로우

1단계: 피처 분석

구현한 피처의 사용자 플로우를 파악합니다.

- 어떤 페이지에서 시작하는가?
- 어떤 인터랙션이 필요한가? (클릭, 입력, 네비게이션)
- 성공 조건은 무엇인가? (URL 변경, 텍스트 표시, 상태 변화)
- 엣지 케이스는? (빈 입력, 에러 응답)

2단계: 앱 실행

# package.json에서 dev/start 스크립트 확인
cat package.json | grep -A 5 '"scripts"'

# 앱 실행 (백그라운드)
npm run dev &
sleep 5  # 앱 준비 대기

3단계: E2E 테스트 작성

e2e/ 디렉토리에 테스트 파일 생성합니다.

# 프로젝트에 기존 E2E 설정 확인
ls e2e/ 2>/dev/null || ls tests/e2e/ 2>/dev/null || ls __tests__/e2e/ 2>/dev/null

# 기존 E2E 프레임워크 확인 (Playwright, Cypress, agent-browser)
cat package.json | grep -E "playwright|cypress|agent-browser"
프레임워크별 테스트 작성

agent-browser 사용 시:

#!/bin/bash
set -e
cleanup() { agent-browser close 2>/dev/null || true; }
trap cleanup EXIT

agent-browser open http://localhost:3000

# 스냅샷으로 요소 확인
agent-browser snapshot -i

# 피처 플로우 실행
agent-browser fill @email-input "[email protected]"
agent-browser click @submit-btn
agent-browser wait text "Success"

echo "PASS: Feature E2E test"

Playwright 사용 시:

import { test, expect } from '@playwright/test';

test('피처명: 사용자 플로우', async ({ page }) => {
  await page.goto('/');
  await page.fill('[data-testid="email"]', '[email protected]');
  await page.click('[data-testid="submit"]');
  await expect(page.locator('.success')).toBeVisible();
});

Cypress 사용 시:

describe('피처명', () => {
  it('사용자 플로우를 완료한다', () => {
    cy.visit('/');
    cy.get('[data-testid="email"]').type('[email protected]');
    cy.get('[data-testid="submit"]').click();
    cy.contains('Success').should('be.visible');
  });
});

4단계: 테스트 실행

# agent-browser
bash e2e/test_feature.sh

# Playwright
npx playwright test e2e/feature.spec.ts

# Cypress
npx cypress run --spec "cypress/e2e/feature.cy.ts"

5단계: 실패 시 디버깅

# 스크린샷 캡처
agent-browser screenshot ./e2e/debug.png

# headed 모드로 재실행
agent-browser open http://localhost:3000 --headed

# 콘솔 에러 확인
agent-browser console --error

Read the full file on GitHub · 131 lines

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. 6d ago First seen · 131 lines · 79 tokens per session scan A 1423abe07cf8

Subscribe to this mod's changes

e2e-verify is a skill published in the GitHub repository jh941213/codex-lattice (19 stars, last pushed 3mo ago), licensed MIT. It adds 79 tokens to every session and 1,030 once invoked, about $0.0004 per session on Opus 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.

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