Web Browser

Web Browser Skill

Minimal CDP tools for collaborative site exploration. Remote controls Google Chrome or Chromium over the Chrome DevTools Protocol.

Prerequisites

• Chrome/Chromium installed at a standard macOS path, or set BROWSER_BIN
• Node.js (for the scripts)
• npm dependencies: cd scripts && npm ci (installs ws WebSocket library)

Setup

# Install npm dependency (one-time)
# Scripts are symlinked from the repo; run npm ci where the real files live.
cd agents/dotagents/.agents/skills/web-browser/scripts && npm ci

# Start Chrome with remote debugging
./scripts/start.js

⚠️ Do not install from ~/.agents/skills/web-browser/scripts. The scripts are symlinks; Node resolves imports from the real repo path. Installing in the symlink target leaves stale node_modules that Node ignores.

Start Chrome

./scripts/start.js                          # Fresh isolated profile (default)
./scripts/start.js --profile                # Copy your profile into isolated cache
./scripts/start.js --reset-profile          # Clear selected cached profile before launch

Starts Chrome with remote debugging (default port :9222).

Profile behaviour:

• Default mode uses: ~/.cache/agent-web/browser/fresh-profile
• --profile mode uses: ~/.cache/agent-web/browser/profile-copy
• The skill does not attach to your live Chrome profile directly
• If :9222 is already used by an unknown instance, start will fail instead of reusing it

If Chrome is installed in a non-standard location, set:

BROWSER_BIN=/path/to/chrome ./scripts/start.js

Optional debug endpoint override:

BROWSER_DEBUG_PORT=9333 ./scripts/start.js

Navigate

./scripts/nav.js https://example.com
./scripts/nav.js https://example.com --new

Navigate current tab or open a new tab.

Device Emulation (Mobile)

./scripts/emulate.js --list                                  # List available presets
./scripts/emulate.js iphone-14                                # Set emulation
./scripts/emulate.js pixel-7 --landscape                      # Landscape orientation
./scripts/emulate.js --reset                                  # Clear emulation

Sets an active device emulation preference (viewport, DPR, touch, UA) that persists across commands.

Evaluate JavaScript

./scripts/eval.js 'document.title'
./scripts/eval.js 'document.querySelectorAll("a").length'
./scripts/eval.js 'JSON.stringify(Array.from(document.querySelectorAll("a")).map(a => ({ text: a.textContent.trim(), href: a.href })).filter(link => !link.href.startsWith("https://")))'

Execute JavaScript in active tab (async context). Use single quotes to avoid shell escaping issues.

Screenshot

./scripts/screenshot.js                            # Current viewport
./scripts/screenshot.js --full-page                # Full document height
./scripts/screenshot.js --device iphone-14          # With device emulation
./scripts/screenshot.js --device pixel-7 --full-page

Returns a temp file path to the PNG.

Pick Elements

./scripts/pick.js "Click the submit button"

Interactive element picker. Click to select, Cmd/Ctrl+Click for multi-select, Enter to finish.

Dismiss Cookie Dialogs

./scripts/dismiss-cookies.js              # Accept cookies
./scripts/dismiss-cookies.js --reject     # Reject cookies (where possible)

Automatically dismisses EU cookie consent dialogs. Run after navigating to a page:

./scripts/nav.js https://example.com && ./scripts/dismiss-cookies.js

Background Logging (Console + Errors + Network)

Automatically started by start.js. Writes JSONL logs to:

~/.cache/agent-web/logs/YYYY-MM-DD/<targetId>.jsonl

Manually start:

./scripts/watch.js

Tail latest log:

./scripts/logs-tail.js                 # Dump current log and exit
./scripts/logs-tail.js --follow        # Keep following

Summarise network responses:

./scripts/net-summary.js

Quick Mobile Debug Flow

./scripts/start.js
./scripts/nav.js https://example.com
./scripts/emulate.js iphone-14
./scripts/nav.js https://example.com         # reload with mobile UA
./scripts/dismiss-cookies.js
./scripts/screenshot.js --full-page