ClaudeCode_Playwright_Demo: Instructions file for Claude Code

CLAUDE.md

ClaudeCode_Playwright_Demo CLAUDE.md is an instructions file for Claude Code from anhtester/ClaudeCode_Playwright_Demo. It costs 2,201 tokens per session, scanned A, original, MIT.

Project instructions for browser-based test automation with Claude Code. They define safe Git usage, the required desktop browser size, headed debugging, and the order for investigating interface problems.

In plain words
What is it for?
Use them when creating or debugging UI tests, checking browser behavior, or working in this repository under its rules for Git, viewport size, and headless testing.
Why use it?
They prevent local work from being overwritten by Git operations and make browser tests easier to reproduce and diagnose. Headed mode means the browser window is visible while debugging.

Instructions file for Claude Code

Written for Claude Code: the file is CLAUDE.md. Also seen: reads .claude/ paths; mentions Claude Code.

This is anhtester/ClaudeCode_Playwright_Demo's own configuration. It tells Claude Code how to work on ClaudeCode_Playwright_Demo itself, so it is not a mod to install elsewhere. Copy it as a starting point and replace the rules that are about this project. Everything ClaudeCode_Playwright_Demo configures →

Reuse

Borrowing it

Nothing to install: this file belongs to anhtester/ClaudeCode_Playwright_Demo. Take a copy, put it at the same path in your own repository, and replace the rules that are about this project with yours.

Copy the file
curl -O https://raw.githubusercontent.com/anhtester/ClaudeCode_Playwright_Demo/main/CLAUDE.md
Clone the repo
git clone --depth 1 https://github.com/anhtester/ClaudeCode_Playwright_Demo

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 ClaudeCode_Playwright_Demo CLAUDE.md

README.md
[![agentmods](https://agentmods.dev/badge/instructions/anhtester/claudecode_playwright_demo/claude-md/github.svg)](https://agentmods.dev/instructions/anhtester/claudecode_playwright_demo/claude-md)
Your own site
<a href="https://agentmods.dev/instructions/anhtester/claudecode_playwright_demo/claude-md"><img src="https://agentmods.dev/badge/instructions/anhtester/claudecode_playwright_demo/claude-md/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 ClaudeCode_Playwright_Demo CLAUDE.md

Your own site · 80×15
<a href="https://agentmods.dev/instructions/anhtester/claudecode_playwright_demo/claude-md"><img src="https://agentmods.dev/badge/instructions/anhtester/claudecode_playwright_demo/claude-md.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 2,201 This file is loaded in full into every session.
When invoked 2,201 The same file — it is already loaded in full.
Security scan A 0 findings. A grade says what 26 rules found in the file — not that it is safe.
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 $0.02201 $0.02201
Opus 5.5 $0.00880 $0.00880
Sonnet 5.5 $0.00440 $0.00440
Haiku 4.5 $0.00220 $0.00220

Measured 1mo ago against content hash 3aa64131fef2, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

ClaudeCode_Playwright_Demo CLAUDE.md 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.

CLAUDE.md · 220 lines

How it starts

The opening of the file, as written. The whole thing — 220 lines — stays where its author put it; the contents beside it link to each section on GitHub.

CLAUDE AI - GLOBAL AUTOMATION AGENT RULES

Scope: Áp dụng cho mọi tác vụ Test Automation do Claude Code hoạt động trong dự án này. Mục tiêu: Sinh ra test scripts hiệu quả, ổn định – dễ debug – dễ scale – CI friendly.


Git Pull Restriction Rule

  • Tuyệt đối KHÔNG dùng lệnh GIT làm thay đổi trạng thái code (như git pull, git checkout, git merge, git rebase, git reset) để lấy code hoặc thay đổi nhánh.
  • Vì có nhiều trường hợp code trên server chưa được cập nhật, việc pull code về sẽ ghi đè và làm sai toàn bộ phần code đang chỉnh sửa ở máy local.
  • Luôn giữ nguyên trạng thái code local hiện tại để làm việc.
  • Nếu cần file hoặc nội dung mới, hãy yêu cầu người dùng cung cấp thay vì tự ý dùng git.
  • Được phép dùng lệnh read-only: git status, git diff, git log — để kiểm tra trạng thái mà không thay đổi code.

Browser Rules (MANDATORY)

🖥️ Viewport & Mode

  • Tất cả UI debugging phải chạy với desktop viewport: 1920x1080
  • Bắt buộc mở browser thật khi debug (headed mode)
  • Headless mode chỉ được sử dụng sau khi test đã debug PASS trên UI
  • CI/CD pipeline được phép chạy headless mặc định

🔄 Thứ Tự Debug Bắt Buộc

Khi debug UI, LUÔN tuân theo thứ tự:

navigate → resize(1920×1080) → wait_for(page_load) → snapshot → interact → screenshot(on_fail)

📸 Screenshot & Snapshot

  • Dùng snapshot để phân tích DOM và xác định locator
  • Dùng screenshot để lưu bằng chứng khi test fail hoặc để báo cáo
  • KHÔNG chụp screenshot tràn lan — chỉ khi cần thiết

Cleanup & Delivery

✅ Điều kiện bàn giao (Definition of Done)

🧹 Code Cleanup
  • Xoá toàn bộ print(), console.log(), debug log tạm thời
  • Xoá locator không còn sử dụng
  • Không để lại commented-out code
  • Không có waitForTimeout / Thread.sleep hardcoded
  • Không có test data hardcoded (email, username, ID phải random/traceable)
🏗️ Cấu trúc & POM
  • Tuân thủ mô hình Page Object Model — tách biệt Page class, Test class, Utils
  • Locator được định nghĩa trong Page class, không viết inline trong test
  • Tên file, class, method đặt theo convention rõ ràng và nhất quán

Read the full file on GitHub · 220 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. 1mo ago First seen · 220 lines · 2,201 tokens per session scan A 3aa64131fef2

Subscribe to this mod's changes

ClaudeCode_Playwright_Demo CLAUDE.md is an instructions file published in the GitHub repository anhtester/ClaudeCode_Playwright_Demo (3 stars, last pushed 5mo ago), licensed MIT. It adds 2,201 tokens to every session, about $0.0088 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 2026-08-31.

Related

Other instructions, from other repositories

vscode buildNext.instructions.md

Working notes and architecture documentation for the new esbuild-based build system in build/next. Use when making changes to the new build pipeline (transpile/bundle commands, NLS plugin, source-map handling, resource copying, or self-hosting watch tasks).

microsoft/vscode · 9,715 tokens

next.js AGENTS.md

AGENTS.md instructions for vercel/next.js, covering next.js development guide, codebase structure, monorepo overview, core package: packages/next and other important packages.

vercel/next.js · 7,461 tokens

vscode oss-third-party-notices.instructions.md

Instructions for microsoft/vscode, covering vs code oss third-party-notices pipeline, architecture, pipeline flow in ci, cache eligibility and rollout and applying the notice (cutover).

microsoft/vscode · 5,262 tokens

langchain AGENTS.md

AGENTS.md instructions for langchain-ai/langchain, covering global development guidelines for the langchain monorepo, corridor security analysis, project architecture and context, monorepo structure and development tools & commands.

langchain-ai/langchain · 4,680 tokens

vscode copilot-instructions.md

Copilot instructions for microsoft/vscode, covering vs code copilot instructions, project overview, root folders, core architecture (src/ folder) and built-in extensions (extensions/ folder).

microsoft/vscode · 2,731 tokens

deno copilot-instructions.md

Copilot instructions for denoland/deno, covering deno development guide for github copilot, network access, high level overview, key directories and key files to understand first.

denoland/deno · 3,077 tokens