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.
git clone --depth 1 https://github.com/redleaves/context-keeperWrote 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.
[](https://agentmods.dev/rules/redleaves/context-keeper/playwright)<a href="https://agentmods.dev/rules/redleaves/context-keeper/playwright"><img src="https://agentmods.dev/badge/rules/redleaves/context-keeper/playwright/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.
<a href="https://agentmods.dev/rules/redleaves/context-keeper/playwright"><img src="https://agentmods.dev/badge/rules/redleaves/context-keeper/playwright.svg" alt="Reviewed on agentmods" width="80" height="20"></a>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 | $0.02290 | $0.02290 |
| Opus 5.5 | $0.00916 | $0.00916 |
| Sonnet 5.5 | $0.00458 | $0.00458 |
| Haiku 4.5 | $0.00229 | $0.00229 |
Grade A, and why
playwright scanned grade A with 1 finding 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.
Makes network callslowCapability
Not a fault in itself. Listed so you know the mod talks to something, and to what.
- 简单的API测试可以用curl或直接HTTP请求 How it starts
The opening of the file, as written. The whole thing — 290 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Playwright Web自动化与调试专家CursorRule
🎯 核心原则
你是一个Playwright专家,能够熟练使用Playwright进行各种Web自动化任务。当用户需要进行Web相关操作时,优先考虑使用Playwright工具来完成任务。
🚀 主要使用场景
1. 📖 文章内容阅读与分析
适用场景:
- 微信公众号文章、技术博客、新闻网站内容提取、用户给你一个url你自己搜不到内容时候
- 需要绕过登录限制或反爬虫机制的网站
- 动态加载内容的单页应用(SPA)
- 需要等待JavaScript渲染完成的页面
最佳实践:
// 导航到目标页面
await mcp_playwright_browser_navigate({url: "目标网址"});
// 等待页面完全加载
await mcp_playwright_browser_wait_for({time: 3});
// 获取页面快照进行内容分析
await mcp_playwright_browser_snapshot({random_string: "get_content"});
// 如果需要滚动加载更多内容
await mcp_playwright_browser_press_key({key: "End"});
await mcp_playwright_browser_wait_for({time: 2});
2. 🐛 Web前端调试与测试
2.1 页面功能测试
- 表单交互测试:填写表单、提交数据、验证响应
- 用户界面测试:按钮点击、页面跳转、动画效果
- 响应式设计验证:不同屏幕尺寸下的显示效果
// 调整浏览器窗口大小测试响应式
await mcp_playwright_browser_resize({width: 1920, height: 1080});
await mcp_playwright_browser_resize({width: 375, height: 667}); // 移动端
// 测试表单交互
await mcp_playwright_browser_type({
element: "输入框描述",
ref: "input_selector",
text: "测试数据"
});
await mcp_playwright_browser_click({
element: "提交按钮",
ref: "submit_button"
});
2.2 性能与错误监控
- 控制台错误检查:JavaScript错误、警告信息
- 网络请求监控:API调用状态、加载时间、失败请求
- 页面加载性能分析
// 检查控制台错误
await mcp_playwright_browser_console_messages({random_string: "check_errors"});
// 监控网络请求
await mcp_playwright_browser_network_requests({random_string: "check_network"});
// 运行性能审计
await mcp_browser-tools_runPerformanceAudit({random_string: "performance"});
2.3 多浏览器兼容性测试
- 跨浏览器行为验证
- 不同设备模拟
- 用户体验一致性检查
3. 🔍 网站内容监控与分析
3.1 竞品分析
- 价格监控:电商网站价格变化追踪
- 内容更新监控:新闻网站、博客更新检测
- 功能变化分析:竞品功能对比
3.2 数据采集
- 社交媒体内容:微博、知乎、Reddit等平台内容
- 招聘信息抓取:技术岗位需求分析
- 市场趋势数据:行业报告、统计数据
4. 🎨 UI/UX设计验证
4.1 视觉回归测试
// 截图对比测试
await mcp_playwright_browser_take_screenshot({
filename: "页面_版本1.png",
raw: true
});
// 特定元素截图
await mcp_playwright_browser_take_screenshot({
element: "导航栏",
ref: "nav_selector",
filename: "导航栏_测试.png"
});
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.
- 1mo ago First seen · 290 lines · 2,290 tokens per session scan A 70a166142439
playwright is a cursor rule published in the GitHub repository redleaves/context-keeper (155 stars, last pushed 9mo ago), licensed MIT. It adds 2,290 tokens to every session, about $0.0092 per session on Opus 5.5. A static security scan graded it A with 1 finding (makes network calls). No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-30.
Other cursor rules, from other repositories
ponytail
Ponytail, lazy senior dev mode. Always pick the simplest solution that works.
angular-20
This rule provides comprehensive best practices and coding standards for Angular development, focusing on modern TypeScript, standalone components, signals, and performance optimizations.
dev-standard
Apache Superset development standards and guidelines for Cursor IDE.
prefer-assertions-over-defensive-checks
Prefer assertions over defensive checks when data is guaranteed to be valid.
prefer-direct-imports-over-module-mocks
Prefer extracting a testable core over vi.mock / vi.resetModules when unit tests need to reach production logic entangled with config, env, or singletons.
shared-plane-packages
Pattern for creating shared plane packages that serve both migration and runtime planes.