Run AI coding agents (OpenCode, Claude Code, Gemini CLI) in just $4 entirely from your phone.

Why Cloud over Local?

• Enough Power - 2 vCPU, 4GB RAM, 40GB SSD
• Always On - Server runs 24/7, keeps your dev environment ready
• No Storage Worries - Phone storage stays free
• Private & Secure - Tailscale VPN, no open ports

Works with OpenCode, Claude Code, Codex, and Gemini CLI.
This guide uses OpenCode.

💡 Get €20 free credits from Hetzner — referral from Dokploy docs, not mine - here to help you save!

1. Open Chrome → Go to hetzner.cloud (€20 free credits!)
2. Create account or login
3. Click + Add Server

Configure your server:

4. Click Create & Buy Now (~$4/month)
5. Wait 1-2 minutes
6. Check your email for:
   • IP Address (like 123.45.67.89)
   • Root Password

⚠️ CRITICAL: SAVE YOUR PASSWORD!
There is NO "forgot password" option for servers.
Screenshot it or save in a password manager immediately.

Open Termux and install SSH:

pkg update && pkg install openssh -y

Connect to your server:

ssh root@YOUR_SERVER_IP

• Replace YOUR_SERVER_IP with IP from email (e.g., ssh root@123.45.67.89)
• Type yes when asked about fingerprint
• Paste password from email (it won't show as you type — that's normal)

✅ You're now on your server!

Paste this single command:

curl -sL https://raw.githubusercontent.com/rajbreno/4PocketCode/main/setup.sh | bash

What it installs:

• Docker, Git, Python, build tools
• Node.js (via NVM) + nodemon
• Tailscale VPN
• OpenCode AI

Wait ~5 minutes until you see "✅ Setup Complete!"

Still on server, run:

tailscale up

A URL appears like:

https://login.tailscale.com/a/abc123...

1. Long press the URL → Copy
2. Open Chrome → Paste URL
3. Login with Google/GitHub/email
4. Click Connect

Get your Tailscale IP:

tailscale ip -4

You'll see something like 100.64.0.1 — SAVE THIS! This is your Tailscale IP.

💡 Why Tailscale?
Your Tailscale IP (100.x.x.x) creates a secure tunnel between your phone and server.
No one else can access it, even without a firewall.

1. Open Tailscale app on your phone
2. Login with the SAME account you just used
3. Toggle Active to ON
4. You should see your server listed

⚠️ MUST use same account! Different accounts = devices can't see each other.

Exit the server:

exit

Back in Termux (on phone), setup quick connect:

Create a shortcut so you only type ssh dev:

mkdir -p ~/.ssh && cat > ~/.ssh/config << EOF
Host dev
    HostName YOUR_TAILSCALE_IP
    User root
EOF

Replace YOUR_TAILSCALE_IP with your Tailscale IP (e.g., 100.64.0.1).

Connect:

ssh dev

If you prefer typing the full IP each time:

ssh root@YOUR_TAILSCALE_IP

Example: ssh root@100.64.0.1

✅ Setup Complete! You can now code from anywhere.

1. Open Tailscale → Make sure it says "Active"
2. Open Termux → Connect:

ssh dev

3. Always use tmux (keeps session alive even if Termux closes):

tmux new -s work

Returning later? Use: tmux attach

4. Start coding:

cd ~/projects
opencode

opencode-web

Then open Chrome → http://YOUR_TAILSCALE_IP:4096

Turn off Tailscale to save battery:

• Open Tailscale app → Toggle Active OFF

💡 Your server keeps running 24/7. Tailscale only needs to be ON when you want to connect from your phone.

1. Open Acode
2. Tap Files (bottom bar) → + → FTP/SFTP
3. Fill in:

4. Tap Save then Connect

✅ Now edit files on server directly!

Make new project:

cd ~/projects
mkdir my-app && cd my-app
npm init -y

Preview your work:

Replace TAILSCALE_IP with your Tailscale IP (e.g., 100.64.0.1)

One-time SSH key setup:

ssh-keygen -t ed25519 -N "" -f ~/.ssh/id_ed25519 && cat ~/.ssh/id_ed25519.pub

Copy the output → Add to github.com/settings/keys

Push your project:

cd ~/projects/my-app
git init
git add .
git commit -m "Initial commit"
git remote add origin git@github.com:YOUR_USERNAME/my-app.git
git push -u origin main

Connect:

ssh dev

Start session:

tmux attach || tmux new -s work

Code:

cd ~/projects/my-app && opencode

Web UI:

opencode-web
# Open: http://TAILSCALE_IP:4096

Made with ❤️ for mobile developers who want real power.