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browser-cdp

Use this skill when you need to control a Chrome browser via CDP (Chrome DevTools Protocol) to reuse existing login sessions. Covers: launching Chrome in debug mode, opening URLs, waiting for page load, evaluating JavaScript, taking snapshots, and extracting auth tokens.

Install / Use

npx skills add zenstory-ai/oh-story-claudecode --skill browser-cdp

Installs into whichever agent you are using.

About this skill
📄

SKILL.md

Installable skill definition

Quality Score

92/100

Category

Automation

Supported Platforms

Claude Code

Our assessment of browser-cdp

browser-cdp scores 92/100 on our quality scale, 566th of 1,990 Automation skills we index (top 29%).

Its SKILL.md is 4.8 KB long, well organised into 17 sections with 10 code examples: a solid amount of guidance for an agent.

With 7,117 GitHub stars, it is one of the more widely adopted skills in the catalogue.

Substance
26/30
Structure
20/20
Description
15/15
Adoption
16/20
Freshness
15/15

Maintenance, license and trust

  • The repository was last updated 2 days ago, so browser-cdp is actively maintained.
  • It is released under the MIT license, a permissive license that allows use, modification and commercial use with attribution.
  • Its trust signals score 100/100, with no cautions. These come from repository metadata, not a code audit — read the skill file before letting an agent act on it.

browser-cdp compared with similar skills

All 4 of these similar skills score higher than browser-cdp; compare them before choosing.

SkillScoreStarsUpdatedFormat
browser-cdp (this skill)by zenstory-ai927.1k2d agoSKILL.md
Agent-Reachby Panniantong10085.8k12d agoCLAUDE.md
rufloby ruvnet10073.4ktodayCLAUDE.md
Scraplingby D4Vinci10084.1ktodayMCP Server
algorithmic-artby anthropics100177.9k5d agoSKILL.md

Frequently asked questions

How do I install browser-cdp?
Run npx skills add zenstory-ai/oh-story-claudecode --skill browser-cdp. The install tabs above show the steps for each supported agent.
Which AI agents does browser-cdp work with?
It is written for Claude Code, as a SKILL.md file. Other agents that read the same format can often use it too.
Is browser-cdp safe to use?
It is MIT-licensed and scores 100/100 on trust signals. Skills are instructions an agent will follow, so read the file before installing it and do not approve commands you do not understand.
Is browser-cdp still maintained?
The repository was last updated 2 days ago, so browser-cdp is actively maintained.

name: browser-cdp description: "Use this skill when you need to control a Chrome browser via CDP (Chrome DevTools Protocol) to reuse existing login sessions. Covers: launching Chrome in debug mode, opening URLs, waiting for page load, evaluating JavaScript, taking snapshots, and extracting auth tokens. Trigger phrases: browser automation, CDP, agent-browser, 浏览器操作, 操作浏览器, Chrome CDP, 复用登录态, extract token from browser." metadata: {"openclaw":{"requires":{"bins":["agent-browser"]},"source":"https://github.com/zenstory-ai/oh-story-claudecode"}}

Browser CDP 操作工具

通过 CDP 协议控制 Chrome,复用已有登录态,执行浏览器自动化操作。

前置条件

  • macOS / Linux / Windows(实验性),已安装 Google Chrome
  • Node.js 20+
  • agent-browser 已安装:npm install -g agent-browser

⚠️ 首次启动会 kill 用户的常规 Chrome。 在启动前必须征求用户同意(见下方"启动流程"),否则用户可能丢失未保存的标签页/草稿。


启动流程(skill-mode 强制步骤)

第一步:探测当前状态(无副作用)

node {SKILL_DIR}/scripts/setup-cdp-chrome.js 9222 --detect-only

输出形如:

CDP_STATUS=ready                        # 已就绪,可直接复用
CDP_URL=http://127.0.0.1:9222/json/version
BROWSER=Chrome/148.0.7778.168

或:

CDP_STATUS=needs-setup
CHROME_RUNNING=yes                      # 用户有 Chrome 在跑,启动会杀掉
CHROME_PID_COUNT=3

第二步:根据探测结果分支

  • CDP_STATUS=ready → 直接使用 agent-browser --cdp 9222 ...,不要运行 setup。
  • CDP_STATUS=needs-setup 且 CHROME_RUNNING=no → 安全启动:
    node {SKILL_DIR}/scripts/setup-cdp-chrome.js 9222 --yes
    
  • CDP_STATUS=needs-setup 且 CHROME_RUNNING=yes → 先用 AskUserQuestion 工具向用户确认:告知会杀掉 N 个 Chrome 进程、可能丢失未保存工作;用户同意后再带 --yes 启动;用户拒绝则放弃这次自动化。

为什么不能直接 --yes: 脚本在非 TTY(即 skill 模式 / Bash 工具)下,如果检测到 Chrome 在跑而没有 --yes,会以退出码 3 报 NEEDS_CONSENT: ... 并中止,不会静默杀进程。这是有意的兜底——但 skill 流程仍应先问用户,而不是看到 3 就盲传 --yes。


启动脚本选项

| 选项 | 说明 | |------|------| | --detect-only | 只探测,不修改任何状态(skill 用) | | --yes | 已征得同意,跳过交互提示 | | --reset | 启动前清空 ~/chrome-debug-profile(登录失效时用) | | --profile <name> | 使用非 Default 的 Chrome profile(如 "Profile 1") | | --dry-run | 打印将执行的步骤,不执行 |

退出码:0 成功 / 1 通用错误 / 2 用户拒绝(TTY)/ 3 需同意但缺 --yes。


常用操作

打开页面并等待加载

agent-browser --cdp 9222 open "<URL>"
agent-browser --cdp 9222 wait 3000

提取页面文本

agent-browser --cdp 9222 eval 'document.body.innerText.substring(0, 8000)'

提取 Auth Token

agent-browser --cdp 9222 eval 'localStorage.getItem("token") || document.cookie'

复杂 JS(含引号 / $ / 反引号)

shell 转义容易出错,用以下两种方式之一:

# 1) base64 包裹
agent-browser --cdp 9222 eval -b "$(echo -n "document.querySelectorAll('a').length" | base64)"

# 2) heredoc + --stdin
cat <<'EOF' | agent-browser --cdp 9222 eval --stdin
const links = document.querySelectorAll('a');
links.length;
EOF

页面交互(snapshot 拿元素引用)

agent-browser --cdp 9222 snapshot -i        # 仅交互元素
agent-browser --cdp 9222 click "<CSS or @e1>"
agent-browser --cdp 9222 type "<sel>" "<text>"

停止 / 清理

  • 关掉 debug Chrome 窗口即可。若窗口无响应,先按 --user-data-dir 核验出 debug 实例的 PID 再只结束它:
    • macOS / Linux:pgrep -af chrome-debug-profile
    • Windows:wmic process where "name='chrome.exe'" get ProcessId,CommandLine | findstr chrome-debug-profile 拿到 PID 后 kill -9 {PID} / taskkill /F /PID {PID}。核验不出归属时停止,手工清理不得按 Chrome 可执行文件名批量结束进程——那会连带杀掉用户的日常 Chrome。 例外:setup-cdp-chrome.js --reset 内部确实会做一次按可执行名的清理,它属于本 skill 自带的、需 --yes 显式同意的启动流程;手工排障不要复制该做法。
  • 登录态失效:node {SKILL_DIR}/scripts/setup-cdp-chrome.js 9222 --reset --yes(注意 --yes 同样需要先问用户)。

OpenCode 环境注意事项

opencode 没有后台执行命令行的工具,长时间的 CDP 操作(如等待页面加载、大批量数据抓取)会阻塞整个会话,导致 CLI 无响应。

超时包装

Windows 上对 CDP 命令使用 PowerShell Job 包装超时:

$job = Start-Job { agent-browser --cdp 9222 eval "window.location.replace('https://www.qidian.com/rank/')" }
Wait-Job $job -Timeout 30 | Out-Null
if ($job.State -eq 'Running') { Stop-Job $job; Write-Output "⏱ CDP 操作超时(30s),请重试或手动打断" }
else { Receive-Job $job }
Remove-Job $job -Force

macOS / Linux 上使用 timeout 命令:

timeout 30 agent-browser --cdp 9222 eval "window.location.replace('https://www.qidian.com/rank/')" || echo "⏱ CDP 操作超时(30s),请重试或手动打断"

已知限制

即使加了超时包装,以下场景仍可能出现问题:

| 场景 | 风险 | 缓解 | |------|------|------| | 页面加载超时 | eval 命令等待永不返回 | 设置 30s 超时,超时后重试 | | 大批量数据抓取 | 多页翻页时累计等待过长 | 每页独立超时,失败后从断点继续 | | Chrome 进程僵死 | CDP 连接断开但进程未退出 | 先核验 debug profile 对应 PID,只结束该 debug 实例后重连;不得连带普通 Chrome | | 网络波动 | 请求挂起无超时 | 超时后自动重试一次 |

如遇到持续卡死的操作,在 opencode 中按 ESC 手动打断。


常见问题

| 问题 | 解决方案 | |------|----------| | NEEDS_CONSENT + 退出码 3 | 用 AskUserQuestion 询问用户是否允许杀掉 Chrome,同意后加 --yes 重跑 | | CDP 端口未监听 | --detect-only 再确认;端口被占用则换端口 | | 页面跳转到登录页 | snapshot -i 找登录按钮并操作 | | eval 返回 null | 检查 localStorage key 名;含引号的 JS 用 eval -b 或 --stdin | | 登录态过期 | setup-cdp-chrome.js 9222 --reset --yes 重新拷贝 | | 有多个 Chrome profile | --profile "Profile 1" 指定 | | Chrome 不会启动(30s 超时) | 试 --reset;检查端口冲突;查看 ~/chrome-debug-profile/ 是否损坏 |

Related Skills

View on GitHub
GitHub Stars7.1k
CategoryAutomation
Updated2d ago
Forks1.0k

Languages

Python

Trust signals

100/100

From repository metadata: license, adoption, age and documentation. Not a code audit — see the Safety scan above for what the skill file itself contains.

No cautions