🧪 SparkCopilot — Try the demo (3 quick steps)

1️⃣ Install Tailscale

QR: install Tailscale

Scan with your phone's normal Camera app, then install the Tailscale app (it auto-detects iOS/Android/Mac/Windows/Linux).

https://tailscale.com/download

⬇️ Moving from step 1 to step 2 — read this first:
  1. Open the Tailscale app you just installed.
  2. Do NOT tap the big "Log in" button (that's for personal Google/ Microsoft/passkey accounts — skip it entirely).
  3. Go to Settings (top-right corner) → Accounts → tap the ⋮ vertical dots (or ☰ horizontal bars) menu → "Use an auth key".
  4. Paste the key from step 2 below, then confirm.
  5. Confirmation of success: your device will show up as "Connected" in the app, and will appear alongside the "sparkcopilot" machine under the owner's Tailscale account.

2️⃣ Join key

QR: join key

📷 Scan this with your phone's normal Camera app, not inside Tailscale — it will show a "Copy" action on the decoded text. Or just tap Copy below.

tskey-auth-kZHomuc9zQ11CNTRL-NB2NQrvtpnf2SvzdXa7ZnfxdsSro1yZu

↑ one continuous key, no spaces/line breaks — if it looks like it's wrapped across several lines above, that's just the box being narrow; tap Copy to get the exact, correct text every time.

💻 On a laptop or desktop instead? Pick your OS
Linux/Mac:
sudo tailscale up --authkey=tskey-auth-kZHomuc9zQ11CNTRL-NB2NQrvtpnf2SvzdXa7ZnfxdsSro1yZu
Windows:
tailscale up --authkey=tskey-auth-kZHomuc9zQ11CNTRL-NB2NQrvtpnf2SvzdXa7ZnfxdsSro1yZu

Linux/macOS: paste into a Terminal (Tailscale's CLI is installed automatically with the app). Windows: open PowerShell "as Administrator", paste, press Enter. Either way, the device joins automatically tagged as a tester — nothing else to configure.

🏢 On a work/corporate or school laptop? Tailscale needs outbound UDP (ideally) or its HTTPS-relay fallback — some corporate firewalls block this entirely, and Tailscale will just hang at "connecting" with no clear error. If that happens, try a personal device or a different network (e.g. your phone's hotspot) instead of troubleshooting the corporate network itself.

Valid until: 2026-11-30T23:27:30+01:00

⬇️

3️⃣ Start the demo

QR: start the demo

Only reachable after step 2. Register, wait for approval, then chat!

http://sparkcopilot.tail280ac5.ts.net:3000/spark-api/demo/

NVIDIA DGX Spark device

This is where SparkCopilot actually runs: an NVIDIA DGX Spark, a desktop-sized personal AI supercomputer. (Photo © NVIDIA, from nvidia.com/en-us/products/workstations/dgx-spark/ — shown here only to illustrate the hardware, not used for any commercial purpose.)

❓ Frequently asked questions
Scanning QR 3 doesn't open anything / times out

You probably haven't finished step 2 yet (or Tailscale is still connecting). The demo address is on this machine's private Tailscale network — it's unreachable until your device has actually joined. Open the Tailscale app and confirm it shows "Connected" first.

Nothing happens when I tap the QR 2 link on my phone

That's expected — QR 2 is not a website link, it's plain text (the join key). Use your phone's normal Camera app to scan it (not a QR scanner built into another app); it should offer a "Copy" action on the decoded text instead of opening a page. Then follow the step 2 instructions to paste it into Tailscale.

I'm on a work/school/corporate network and it won't connect

Some corporate firewalls block the connections Tailscale needs. Try your phone's own mobile data/hotspot instead, or a personal/home network — that's usually the fastest fix.

How long will I be waiting to get approved?

The status page (shown right after you register in step 3) shows you where you are in line and, if you're one of the next few, a rough time estimate. No action needed on your end — just leave that tab open or check back.

Do I need to create an account or install anything besides Tailscale?

No separate account signup for Tailscale itself (you're using a shared join key, not a personal login). Once your registration is approved on the demo page, you'll get a one-time email/password to sign into the chat — that's the only account involved.

How do I leave / clean up when I'm done testing?

Just type a message like "I'm done testing" in the chat — the system detects it, ends your session gracefully, and will clean up your temporary access on its own. You don't need to manually uninstall Tailscale unless you want to (Settings → uninstall, same as any app).

Is my chat data private?

During an active testing round, conversations may be reviewed by the SparkCopilot owner to find and fix bugs — you'll see a notice about this when the testing round is active. Don't share anything you wouldn't want reviewed for that purpose.

Credits to: Stefano Moriconi