Browser Smoke

MCP browser smoke testing plugin for OpenCode — Playwright-based UI testing via browser automation. Jalankan smoke test terhadap web app langsung dari OpenCode dengan 24 tools.

Prerequisites

Requirement	Version
Node.js	>= 18
Python	>= 3.8
OpenCode	terinstal

Quick Install

npx browser-smoke init

CLI akan interaktif nanya:

Pilih lokasi instalasi:
  [1] Global  — untuk semua project (~/.config/opencode)
  [2] Local   — hanya project ini (./opencode.json)
  [3] Cancel
Pilih [1/2/3]:

Proses:

1. Setup Python virtual environment
2. Install dependencies (fastmcp, playwright, pixelmatch, Pillow)
3. Install Chromium browser
4. Config opencode.json + skill file

Restart OpenCode setelah selesai.

Opsi Init

Command	Description
npx browser-smoke init	Interaktif (tanya global/local)
npx browser-smoke init --global	Global, skip prompt
npx browser-smoke init --local	Local, skip prompt
npx browser-smoke init --print	Preview config tanpa install

Manual Config

Kalo init gak bisa dipake, tambahin manual ke opencode.json:

{
  "mcp": {
    "browser-smoke": {
      "type": "local",
      "command": [".browser-smoke/.venv/bin/python3", "-m", "server"],
      "cwd": ".browser-smoke/mcp"
    }
  }
}

Tools (24 MCP Tools)

Navigasi & Page

Tool	Description
browser_open(url, headless?)	Buka URL. Returns title + status code + screenshot
browser_open_tab(url)	Buka tab baru, fokus ke tab baru
browser_get_tabs()	List semua tab (title, URL, active status)
browser_close()	Tutup browser session
browser_scroll(x?, y?)	Scroll page (default: down 200px)

Interaksi DOM

Tool	Description
browser_extract_dom()	List semua elemen interaktif (button, input, link) + CSS selector
browser_click(selector)	Klik element berdasarkan CSS selector
browser_type(selector, text)	Ketik teks ke input
browser_type_guess(selector, input_type?)	Auto-fill input (text/email/password/search/number)

Screenshot & Visual

Tool	Description
browser_screenshot()	Screenshot halaman saat ini
browser_screenshot_diff(name, threshold?)	Screenshot + diff dengan baseline. Threshold default 0.01 (1%)
browser_highlight(selector, color?, duration?)	Highlight element dengan outline

JavaScript & Network

Tool	Description
browser_execute(js_code)	Execute JavaScript di page context
browser_inject_script(script, url_pattern?)	Inject JS sebelum page load (mock API, polyfills)
browser_network_capture(mode, patterns?)	Intercept network requests (mode: start/stop/get)
browser_block_resources(patterns)	Block resources by glob pattern (*.jpg, *.png, analytics)

Console & Error

Tool	Description
browser_console()	Ambil captured console logs
browser_errors()	Ambil captured JS runtime errors

Cookies & Storage

Tool	Description
browser_get_cookies()	Get all cookies
browser_set_cookie(name, value, domain?, path?)	Set cookie
browser_clear_cookies()	Clear all cookies
browser_storage(mode, storage?, key?, value?)	localStorage/sessionStorage access (all/get/set/clear)

Report

Tool	Description
browser_report(results_json)	Generate smoke test report markdown

Background

Tool	Description
browser_offscreen(action, url?, js?)	Hidden page untuk background processing (open/exec/close)

Usage Guide

Basic Smoke Test

1. Load skill browser-smoke di OpenCode
2. Test flow:

browser_open(url="http://localhost:5173")
browser_extract_dom()
browser_click(selector="button:has-text('Login')")
browser_type(selector="input[type='email']", text="[email protected]")
browser_type(selector="input[type='password']", text="Test1234!")
browser_click(selector="button:has-text('Submit')")
browser_screenshot()
browser_console()
browser_errors()
browser_report(results_json)
browser_close()

Network Capture

browser_network_capture(mode="start", patterns="*.api.*,*.json")
# lakukan interaksi...
browser_network_capture(mode="get")  # lihat request/response
browser_network_capture(mode="stop")

Script Injection

browser_inject_script(script="window.__TEST_MODE__=true")
browser_open(url="http://localhost:5173")
browser_execute(js_code="window.__TEST_MODE__")  # → true

Visual Regression

browser_open(url="http://localhost:5173")
browser_screenshot_diff(name="homepage")  # baseline (first run)
# setelah code change...
browser_screenshot_diff(name="homepage")  # diff with baseline

Skill Integration

Setelah install, skill browser-smoke otomatis terdaftar. Di OpenCode:

skill browser-smoke

Skill ini menyediakan metodologi smoke testing lengkap dengan failure analysis loop.

Troubleshooting

Masalah	Solusi
browser_screenshot_diff gagal	Pastikan mcp/tools/browser.py punya akses ke artifacts directory
Chromium error	playwright install chromium lagi
Connection refused	Pastikan app target jalan (npm run dev, dll)
Python not found	python3 --version, kalo error install Python dulu

Development

git clone https://github.com/sukirman1901/browser-smoke.git
cd browser-smoke
npm link           # biar bisa npx browser-smoke dari lokal

License

MIT