What is ClaudeCode_Playwright_Demo CLAUDE.md?

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.

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.

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.

ClaudeCode_Playwright_Demo CLAUDE.md — Instructions file for coding agents by anhtester: Project instructions for browser-based test automat

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 instructions/anhtester/claudecode_playwright_demo/claude-md

Clone the repo

git clone --depth 1 https://github.com/anhtester/ClaudeCode_Playwright_Demo

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/instructions/anhtester/claudecode_playwright_demo/claude-md.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.svg" alt="Measured on agentmods" 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. 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.

Model	Per session	Once invoked
Fable 5.1	$0.02201	$0.02201
Opus 5	$0.01100	$0.01100
Sonnet 5	$0.00440	$0.00440
Haiku 4.5	$0.00220	$0.00220

Measured 5d ago against content hash 3aa64131fef2, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-05, 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 5d 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.

5d 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 (2 stars, last pushed 3mo ago), licensed MIT. It adds 2,201 tokens to every session, about $0.0110 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 2026-08-31.

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ClaudeCode_Playwright_Demo CLAUDE.md