node --version      # Should be 18+
adb --version       # Should show Android Debug Bridge version
emulator -version   # Should show Android emulator version

brew install node

brew install --cask android-platform-tools

# 1. JDK — required by sdkmanager itself, and by the gradle-* tools
brew install --cask temurin@17

# 2. cmdline-tools (provides sdkmanager)
brew install --cask android-commandlinetools

# 3. Set ANDROID_HOME and create the directory BEFORE running sdkmanager,
#    otherwise sdkmanager has no install target.
export ANDROID_HOME="$HOME/Library/Android/sdk"
mkdir -p "$ANDROID_HOME"

# 4. Accept all SDK licenses first, then install packages.
#    `sdkmanager --install` aborts on unaccepted per-package licenses
#    (e.g. the Google APIs system image) if licenses aren't accepted first.
#    The system-image arch must match your host: `arm64-v8a` for Apple
#    Silicon (M1/M2/M3), `x86_64` for Intel Macs. Check with `uname -m`.
yes | sdkmanager --licenses
sdkmanager --install "platform-tools" "emulator" "system-images;android-34;google_apis;arm64-v8a"

export ANDROID_HOME="$HOME/Library/Android/sdk"
export PATH="$ANDROID_HOME/platform-tools:$ANDROID_HOME/emulator:$PATH"

npm install -g replicant-mcp

replicant doctor

npm update -g replicant-mcp

{
  "mcpServers": {
    "replicant": {
      "command": "npx",
      "args": ["-y", "replicant-mcp"]
    }
  }
}

claude mcp add replicant -- npx -y replicant-mcp

{
  "mcpServers": {
    "replicant": {
      "command": "npx",
      "args": ["-y", "replicant-mcp"]
    }
  }
}

{
  "mcpServers": {
    "replicant": {
      "command": "npx",
      "args": ["-y", "replicant-mcp"]
    }
  }
}

[mcp_servers.replicant]
command = "npx"
args = ["-y", "replicant-mcp"]

codex mcp add replicant -- npx -y replicant-mcp

You: "I just changed the checkout flow. Build the app, go through checkout
      with a test product, and make sure the confirmation screen shows up."

Claude: [Builds debug APK, installs on emulator, launches app]
        [Taps "Electronics" category → "Wireless Headphones" → "Add to Cart"]
        [Navigates to cart, taps "Checkout"]
        [Fills shipping form, taps "Place Order"]

        Confirmation screen is showing:
        - Order #38291
        - "Wireless Headphones" × 1
        - Total: $79.99
        - Estimated delivery: Jan 30

        The flow works. Want me to test the edge cases—empty cart,
        invalid address, payment failure?