Browserstack Live

BrowserStack Live Session

Open a live browser session on a real device (phone, tablet, or desktop) using BrowserStack. Because BrowserStack devices cannot reach localhost, this skill tunnels the local dev server through Cloudflare to produce a temporary public URL.

Local server  -->  Cloudflare tunnel  -->  BrowserStack Live
(any port)        (public trycloudflare.com URL)   (real device)

Step 1 — Prepare something to test

Option A: Handsontable demo page

If the user wants to test Handsontable behavior (bug fix, feature, plugin, editor, etc.), use the demo-page skill to generate handsontable/dev-generated.html. That skill builds a two-tab HTML page (Released vs PR Build) with test-specific config and reproduction steps.

After the demo page is generated, serve it:

python3 -m http.server 8767 --directory handsontable &

Verify it works:

curl -s -o /dev/null -w "%{http_code}" http://localhost:8767/dev-generated.html

The tunnel URL path will be /dev-generated.html.

Option B: Existing local server

If the user wants to test the docs site, a recipe page, or any other already-running server, just confirm reachability:

curl -s -o /dev/null -w "%{http_code}" <URL>

Common servers in this repo:

For Vite-based dev servers (like Astro docs), tunnel hostnames get blocked by default. If the tunnel URL returns a "Blocked request" error, add this to the Vite config (inside astro.config.mjs):

vite: {
  server: {
    allowedHosts: ['.trycloudflare.com'],
  },
}

Then restart the dev server. Check whether it is already configured before modifying the file.

Option C: Public URL

If the user provides a public URL (e.g., a staging deployment), skip straight to Step 2. No tunnel is needed — pass the URL directly to BrowserStack in Step 3.

Step 2 — Start the Cloudflare tunnel

BrowserStack cannot access localhost. A Cloudflare quick tunnel creates an ephemeral public URL that proxies to the local server. No Cloudflare account is needed — the tunnel is ephemeral and disappears when the process exits.

Capture output to a log file (the tunnel URL is printed to stderr):

npx cloudflared tunnel --url http://localhost:<PORT> > /tmp/cloudflare-tunnel.log 2>&1 &
echo "Tunnel PID: $!"

Wait for the tunnel to initialize (~10 seconds), then extract the URL:

sleep 10
grep -o 'https://[a-z0-9-]*\.trycloudflare\.com' /tmp/cloudflare-tunnel.log | head -1

The URL looks like https://some-random-words.trycloudflare.com.

Troubleshooting

• If no URL appears after 10 seconds, wait a few more and re-check: cat /tmp/cloudflare-tunnel.log.
• If the tunnel fails to start, check for port conflicts or kill stale tunnel processes.
• The URL changes every time the tunnel restarts.

Step 3 — Launch the BrowserStack session

Use the mcp__browserstack__runBrowserLiveSession MCP tool. The tool returns a clickable BrowserStack dashboard URL — share it with the user.

Mobile devices

mcp__browserstack__runBrowserLiveSession({
  platformType: "mobile",
  desiredURL: "<tunnel-url>/<path>",
  desiredOS: "android",           // or "ios"
  desiredOSVersion: "latest",
  desiredBrowser: "chrome",       // or "safari" for iOS
  desiredDevice: "Samsung Galaxy S25"
})

Desktop browsers

mcp__browserstack__runBrowserLiveSession({
  platformType: "desktop",
  desiredURL: "<tunnel-url>/<path>",
  desiredOS: "Windows",           // or "OS X"
  desiredOSVersion: "11",         // or "latest"
  desiredBrowser: "chrome"        // or "firefox", "safari", "edge"
})

Device defaults

If the user does not specify a device, use these defaults:

All popular presets

Step 4 — Cleanup

When the user is done testing, kill the tunnel process:

kill <tunnel-pid> 2>/dev/null

If a local HTTP server was started for this session, kill that too.