WhatsApp personal AI assistant with voice, image, and PDF support

📺 Full walkthrough video: https://youtu.be/-kpt0BwjKls

Who it's for

This workflow is for professionals and power users who want a personal AI assistant accessible directly via WhatsApp, capable of managing their emails, calendar, files, and online searches through natural conversation — including voice messages.

How it works

1. A WhatsApp Trigger receives incoming messages and routes them by input type: text, audio, image, or PDF document. 2. Audio messages are downloaded and transcribed via OpenAI Whisper. Images are downloaded and analyzed by GPT-4o mini. PDF files are validated, downloaded, and text-extracted. 3. All input types are normalized into a unified text field before being passed to the AI agent. 4. A personal assistant agent powered by Claude Sonnet processes the request using a full tool suite: Gmail (send/search), Google Calendar (create/read events), Google Drive (search), Airtable (contact email database), SerpAPI (web search), Discord (direct messages), and a calculator. 5. If the original input was a voice message, the agent's response is converted to audio via OpenAI TTS and sent back as a WhatsApp audio message. Otherwise, a text reply is sent.

How to set up

- [ ] Connect your WhatsApp Business API credentials to the trigger and all send nodes - [ ] Add OpenAI API credentials to the transcription, image analysis, and TTS nodes - [ ] Add Anthropic API credentials to the Claude Sonnet model node - [ ] Connect Gmail OAuth2 credentials to the send and search email tool nodes - [ ] Connect Google Calendar OAuth2 credentials to the create and get events tool nodes - [ ] Connect Google Drive OAuth2 credentials to the search tool node - [ ] Connect Airtable credentials and configure the base/table IDs for the email database - [ ] Add SerpAPI credentials to the web search tool node - [ ] Add Discord bot credentials and configure the target user ID for direct messages - [ ] Set the correct phone number ID and recipient number in all WhatsApp send nodes

Requirements