---
name: web-automation
description: Browse and scrape web pages using Playwright-compatible CloakBrowser. Use when automating web workflows, extracting rendered page content, handling authenticated sessions, or running multi-step browser flows.
---

# Web Automation with CloakBrowser (Claude Code)

Automated web browsing and scraping using Playwright-compatible CloakBrowser with two execution paths:

- one-shot extraction via `extract.js`
- broader stateful automation via `auth.ts`, `browse.ts`, `flow.ts`, `scan-local-app.ts`, and `scrape.ts`

## Requirements

- Node.js 20+
- pnpm
- Network access to download the CloakBrowser binary on first use

## First-Time Setup

```bash
cd ~/.claude/skills/web-automation/scripts
pnpm install
npx cloakbrowser install
pnpm approve-builds
pnpm rebuild better-sqlite3 esbuild
```

## Updating CloakBrowser

```bash
cd ~/.claude/skills/web-automation/scripts
pnpm up cloakbrowser playwright-core
npx cloakbrowser install
pnpm approve-builds
pnpm rebuild better-sqlite3 esbuild
```

## Prerequisite Check (MANDATORY)

Before running automation, verify CloakBrowser and Playwright Core are installed and wired correctly.

```bash
cd ~/.claude/skills/web-automation/scripts
node check-install.js
```

`check-install.js` also prints the frozen reference repo + commit recorded in `reference-source.json`, so operators can confirm the canonical import source before using the skill.

If the check fails, stop and return:

"Missing dependency/config: web-automation requires `cloakbrowser` and `playwright-core` with CloakBrowser-based scripts. Run setup in this skill, then retry."

If runtime fails with missing native bindings for `better-sqlite3` or `esbuild`, run:

```bash
cd ~/.claude/skills/web-automation/scripts
pnpm approve-builds
pnpm rebuild better-sqlite3 esbuild
```

## When To Use Which Command

- Use `node extract.js "<URL>"` for a one-shot rendered fetch with JSON output.
- Use `npx tsx scrape.ts ...` when you need markdown extraction, Readability cleanup, or selector-based scraping.
- Use `npx tsx browse.ts ...`, `auth.ts`, or `flow.ts` when the task needs login handling, persistent sessions, clicks, typing, screenshots, or multi-step navigation.
- Use `npx tsx scan-local-app.ts` when you need a configurable local-app smoke pass driven by `SCAN_*` and `CLOAKBROWSER_*` environment variables.

## Quick Reference

- Install check: `node check-install.js`
- One-shot JSON extract: `node extract.js "https://example.com"`
- Browse page: `npx tsx browse.ts --url "https://example.com"`
- Scrape markdown: `npx tsx scrape.ts --url "https://example.com" --mode main --output page.md`
- Authenticate: `npx tsx auth.ts --url "https://example.com/login"`
- Natural-language flow: `npx tsx flow.ts --instruction 'go to https://example.com then click on "Login" then type "user@example.com" in #email then press enter'`
- Local app smoke scan: `SCAN_BASE_URL=http://localhost:3000 SCAN_ROUTES=/,/dashboard npx tsx scan-local-app.ts`

## Local App Smoke Scan

`scan-local-app.ts` is intentionally generic. Configure it with environment variables instead of editing the file:

- `SCAN_BASE_URL`
- `SCAN_LOGIN_PATH`
- `SCAN_USERNAME`
- `SCAN_PASSWORD`
- `SCAN_USERNAME_SELECTOR`
- `SCAN_PASSWORD_SELECTOR`
- `SCAN_SUBMIT_SELECTOR`
- `SCAN_ROUTES`
- `SCAN_REPORT_PATH`
- `SCAN_HEADLESS`

If `SCAN_USERNAME` or `SCAN_PASSWORD` are omitted, the script falls back to `CLOAKBROWSER_USERNAME` and `CLOAKBROWSER_PASSWORD`.

## Notes

- Sessions persist in CloakBrowser profile storage.
- Use `--wait` for dynamic pages.
- Use `--mode selector --selector "..."` for targeted extraction.
- `extract.js` keeps a bounded stealth/rendered fetch path without needing a long-lived automation session.