How I built an AI WhatsApp Auto-Responder with 0% Ban Risk using Google Gemini

prince nebhwani — Sat, 03 Oct 2026 16:58:06 +0000

Most WhatsApp bots rely on Python web scrapers that get your phone number banned, or closed-source Play Store apps charging $10/month.

I wanted an auto-responder that is completely free, private, and ban-proof.

How It Works

Instead of scraping WhatsApp Web, the app uses Android's native NotificationListenerService and RemoteInput—the exact system API used by Wear OS smartwatches and Android Auto. To WhatsApp's servers, the replies look 100% native.

Key Features

Google Gemini AI: Context-aware, human-like responses instead of rigid regex.
Customizable Tones: Professional, Friendly, Chill, Witty, or custom system prompt.
Zero Middleman Servers: Direct connection from device to Google Gemini API using your personal API key.
Local Storage: All logs stay in your local Room SQLite database.

Try It Out

The project is 100% open-source under the MIT license:

GitHub Repo: https://github.com/Prince-nebhwani/WhatsApp-Auto-Responder
Live Site & APK: https://prince-nebhwani.github.io/WhatsApp-Auto-Responder/

Feedback and PRs are welcome!

DEV Community: prince nebhwani

How I built an AI WhatsApp Auto-Responder with 0% Ban Risk using Google Gemini

How It Works

Key Features

Try It Out