e2e

e2e is a command for coding agents from affaan-m/ECC. It costs 10 tokens per session (576 once invoked), scanned A, original, MIT.

A command that creates and runs end-to-end tests with Playwright, a tool for testing complete user journeys in a browser.

In plain words
What is it for?
Use it to turn a user flow into browser tests, run those tests, and inspect failure artifacts.
Why use it?
It checks whether a feature works from the user's point of view and provides screenshots or videos when something fails.

Command

Part of the ecc plugin — 70 skills, 56 commands, 68 agents, 1 MCP server shipped together

About the project

ECC is a toolkit that organizes and improves how coding agents work through skills, memory, security checks, research practices, and related extensions. It is for developers using agents such as Claude Code, Codex, OpenCode, and Cursor.

affaan-m/ECC · 246,988 stars · on GitHub

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.

agentmods
npx agentmods add commands/affaan-m/ecc/e2e
Clone the repo
git clone --depth 1 https://github.com/affaan-m/ECC

Or install ecc, the plugin that ships this one along with the rest of its 70 skills, 56 commands, 68 agents, 1 MCP server.

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

README.md
[![agentmods](https://agentmods.dev/badge/commands/affaan-m/ecc/e2e.svg)](https://agentmods.dev/commands/affaan-m/ecc/e2e)
Your own site
<a href="https://agentmods.dev/commands/affaan-m/ecc/e2e"><img src="https://agentmods.dev/badge/commands/affaan-m/ecc/e2e.svg" alt="Measured on agentmods" height="20"></a>
Per session 10 Only the description is in the session, so the agent can decide to use it. The body loads when it is invoked.
When invoked 576 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 $0.00010 $0.00576
Opus 5 $0.00005 $0.00288
Sonnet 5 $0.00002 $0.00115
Haiku 4.5 $0.00001 $0.00058

Measured yesterday against content hash e6bc8984d292, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade A, and why

e2e 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 yesterday.

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.

Origin

Copies of this mod

8 near-identical copies found in the catalogue:

  • e2e — 100% identical, 6 lines differ
  • e2e — 100% identical, 6 lines differ
  • e2e — 100% identical, 6 lines differ
  • e2e — 100% identical, 6 lines differ
  • e2e — 100% identical, 6 lines differ
  • e2e — 100% identical, 6 lines differ
  • e2e — 100% identical, 6 lines differ
  • e2e — 94% identical, 2 lines differ
.opencode/commands/e2e.md · 106 lines

How it starts

The opening of the file, as written. The whole thing — 106 lines — stays where its author put it; the contents beside it link to each section on GitHub.

E2E Command

Generate and run end-to-end tests using Playwright: $ARGUMENTS

Your Task

  1. Analyze user flow to test
  2. Create test journey with Playwright
  3. Run tests and capture artifacts
  4. Report results with screenshots/videos

Test Structure

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

test.describe('Feature: [Name]', () => {
  test.beforeEach(async ({ page }) => {
    // Setup: Navigate, authenticate, prepare state
  })

  test('should [expected behavior]', async ({ page }) => {
    // Arrange: Set up test data

    // Act: Perform user actions
    await page.click('[data-testid="button"]')
    await page.fill('[data-testid="input"]', 'value')

    // Assert: Verify results
    await expect(page.locator('[data-testid="result"]')).toBeVisible()
  })

  test.afterEach(async ({ page }, testInfo) => {
    // Capture screenshot on failure
    if (testInfo.status !== 'passed') {
      await page.screenshot({ path: `test-results/${testInfo.title}.png` })
    }
  })
})

Best Practices

Selectors

  • Prefer data-testid attributes
  • Avoid CSS classes (they change)
  • Use semantic selectors (roles, labels)

Waits

  • Use Playwright's auto-waiting
  • Avoid page.waitForTimeout()
  • Use expect().toBeVisible() for assertions

Test Isolation

  • Each test should be independent
  • Clean up test data after
  • Don't rely on test order

Artifacts to Capture

  • Screenshots on failure
  • Videos for debugging
  • Trace files for detailed analysis
  • Network logs if relevant

Test Categories

  1. Critical User Flows

    • Authentication (login, logout, signup)
    • Core feature happy paths
    • Payment/checkout flows
  2. Edge Cases

    • Network failures
    • Invalid inputs
    • Session expiry
  3. Cross-Browser

    • Chrome, Firefox, Safari
    • Mobile viewports

Report Format

E2E Test Results
================
PASS: Passed: X
FAIL: Failed: Y
SKIPPED: Skipped: Z

Failed Tests:
- test-name: Error message
  Screenshot: path/to/screenshot.png
  Video: path/to/video.webm

Read the full file on GitHub · 106 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. yesterday First seen · 106 lines · 10 tokens per session scan A e6bc8984d292

Subscribe to this mod's changes

e2e is a command published in the GitHub repository affaan-m/ECC (246,988 stars, last pushed yesterday), licensed MIT. It adds 10 tokens to every session and 576 once invoked, about $0.0001 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 2026-09-03.