web-browser

Name: web-browser
Author: mitsuhiko

Allows to interact with web pages by performing actions such as clicking buttons, filling out forms, and navigating links. It works by remote controlling…

INSTALLATION

npx skills add https://github.com/mitsuhiko/agent-stuff --skill web-browser

Run in your project or agent environment. Adjust flags if your CLI version differs.

SKILL.md

$2b

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 new tab.

Device Emulation (Mobile)

./scripts/emulate.js --list

./scripts/emulate.js iphone-14

./scripts/emulate.js pixel-7 --landscape

./scripts/emulate.js --reset

Set an active device emulation preference (viewport, DPR, touch, UA) for browser skill commands. Use --reset to clear.

Commands like nav.js, eval.js, pick.js, dismiss-cookies.js, and screenshot.js automatically apply the active preference.

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). Be careful with string escaping, best to use single quotes.

Screenshot

./scripts/screenshot.js

./scripts/screenshot.js --full-page

./scripts/screenshot.js --device iphone-14

./scripts/screenshot.js --device pixel-7 --full-page

Takes a screenshot and returns a temp file path.

Default: current viewport

--full-page: captures full document height

--device <preset>: temporary mobile emulation for that screenshot only

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 &#x26;&#x26; ./scripts/dismiss-cookies.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

Background Logging (Console + Errors + Network)

Automatically started by start.js and 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

Summarize network responses:

./scripts/net-summary.js