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diff --git a/skills/ship-setup/setup.sh b/skills/ship-setup/setup.sh
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+#!/usr/bin/env bash
+# ship-setup: Configure a VPS for ship deployments.
+# Usage: ./setup.sh <ssh-host> <base-domain> <nickname> [--default]
+#
+# - Idempotent: safe to run multiple times
+# - Mirrors the behavior of `ship host init` from the Go CLI
+# - Updates ~/.config/ship/config.json with the new host
+
+set -euo pipefail
+
+# ── Args ────────────────────────────────────────────────────────────────────
+
+if [ $# -lt 3 ]; then
+  echo "Usage: $0 <ssh-host> <base-domain> <nickname> [--default]"
+  echo "  ssh-host:    SSH connection string or alias (e.g. ubuntu@1.2.3.4 or alaskav6)"
+  echo "  base-domain: Base domain for this server (e.g. example.com)"
+  echo "  nickname:    Short name for this host (e.g. prod, staging)"
+  echo "  --default:   Make this the default host"
+  exit 1
+fi
+
+SSH_HOST="$1"
+DOMAIN="$2"
+NICKNAME="$3"
+MAKE_DEFAULT=false
+if [ "${4:-}" = "--default" ]; then
+  MAKE_DEFAULT=true
+fi
+
+CONFIG_FILE="$HOME/.config/ship/config.json"
+
+# ── Step 1: Test SSH connection ──────────────────────────────────────────────
+
+echo "→ Testing SSH connection to $SSH_HOST..."
+if ! ssh -o ConnectTimeout=5 -o BatchMode=yes "$SSH_HOST" "echo ok" &>/dev/null; then
+  echo "✗ SSH connection failed. Make sure your key is authorized:"
+  echo "  ssh-copy-id $SSH_HOST"
+  exit 1
+fi
+echo "  ✓ Connected"
+
+# ── Step 2: Detect OS ────────────────────────────────────────────────────────
+
+echo "→ Detecting OS..."
+OS_RELEASE=$(ssh "$SSH_HOST" "cat /etc/os-release")
+if ! echo "$OS_RELEASE" | grep -qE "Ubuntu|Debian"; then
+  echo "✗ Unsupported OS. Only Ubuntu and Debian are supported."
+  exit 1
+fi
+echo "  ✓ OS supported"
+
+# ── Step 3: Install Caddy (if not present) ───────────────────────────────────
+
+echo "→ Checking Caddy..."
+if ssh "$SSH_HOST" "which caddy" &>/dev/null; then
+  echo "  ✓ Caddy already installed"
+else
+  echo "  Installing Caddy..."
+  ssh "$SSH_HOST" "sudo apt-get update -qq && \
+    sudo apt-get install -y -qq debian-keyring debian-archive-keyring apt-transport-https curl gnupg && \
+    curl -1sLf 'https://dl.cloudsmith.io/public/caddy/stable/gpg.key' -o /tmp/caddy.gpg && \
+    sudo gpg --dearmor -o /usr/share/keyrings/caddy-stable-archive-keyring.gpg < /tmp/caddy.gpg && \
+    curl -1sLf 'https://dl.cloudsmith.io/public/caddy/stable/debian.deb.txt' | sudo tee /etc/apt/sources.list.d/caddy-stable.list && \
+    sudo apt-get update -qq && \
+    sudo apt-get install -y -qq caddy"
+  echo "  ✓ Caddy installed"
+fi
+
+# ── Step 4: Configure Caddyfile (only if not already set up) ─────────────────
+
+echo "→ Checking Caddyfile..."
+if ssh "$SSH_HOST" "sudo test -f /etc/caddy/Caddyfile && sudo grep -q 'sites-enabled' /etc/caddy/Caddyfile" 2>/dev/null; then
+  echo "  ✓ Caddyfile already configured"
+else
+  echo "  Writing Caddyfile..."
+  ssh "$SSH_HOST" "echo '{
+}
+
+import /etc/caddy/sites-enabled/*' | sudo tee /etc/caddy/Caddyfile > /dev/null"
+  echo "  ✓ Caddyfile configured"
+fi
+
+# ── Step 5: Create directory structure ───────────────────────────────────────
+
+echo "→ Creating directories..."
+ssh "$SSH_HOST" "sudo mkdir -p \
+  /etc/ship/env \
+  /etc/ship/ports \
+  /etc/ship/ttl \
+  /etc/ship/overrides \
+  /etc/caddy/sites-enabled \
+  /var/www && \
+  sudo chmod 755 /etc/ship"
+echo "  ✓ Directories ready"
+
+# ── Step 6: Enable and start Caddy ───────────────────────────────────────────
+
+echo "→ Enabling Caddy..."
+ssh "$SSH_HOST" "sudo systemctl enable caddy && sudo systemctl start caddy || sudo systemctl reload caddy"
+echo "  ✓ Caddy running"
+
+# ── Step 7: Save config locally ──────────────────────────────────────────────
+
+echo "→ Saving host config to $CONFIG_FILE..."
+mkdir -p "$(dirname "$CONFIG_FILE")"
+
+python3 - <<EOF
+import json, os
+
+path = os.path.expanduser("$CONFIG_FILE")
+cfg = {"default": None, "hosts": {}}
+
+if os.path.exists(path):
+    with open(path) as f:
+        cfg = json.load(f)
+
+cfg["hosts"]["$NICKNAME"] = {
+    "host": "$SSH_HOST",
+    "domain": "$DOMAIN"
+}
+
+if cfg["default"] is None or "$MAKE_DEFAULT" == "true":
+    cfg["default"] = "$NICKNAME"
+
+with open(path, "w") as f:
+    json.dump(cfg, f, indent=2)
+    f.write("\n")
+
+print(f"  Hosts: {list(cfg['hosts'].keys())}")
+print(f"  Default: {cfg['default']}")
+EOF
+
+echo "  ✓ Config saved"
+
+# ── Done ─────────────────────────────────────────────────────────────────────
+
+echo ""
+echo "✓ $NICKNAME ($SSH_HOST) is ready for deployments"
+echo "  Domain: $DOMAIN"
+if [ "$MAKE_DEFAULT" = true ]; then
+  echo "  Set as default host"
+fi
+echo ""
+echo "Next steps:"
+echo "  Deploy a binary:      /ship-deploy"
+echo "  Check what's running: /ship-status"
+echo "  Add another host:     ./setup.sh <host> <domain> <nickname>"