Auto-Generate WhatsApp Proposals from Voice or Text using GPT & APITemplate

How it works • Transcribes a WhatsApp voice or text message from a prospect using Whisper or GPT • Extracts key information (name, need, context, urgency) via AI • Matches the most relevant service pack by comparing the prospect’s need with Airtable data • Dynamically fills a branded template via APITEMPLATE (HTML or PDF) • Generates a clean, personalized business proposal — including dynamic links (payment, calendar, etc.) • Sends the final PDF back instantly via WhatsApp or email Set up steps • ⏱ Estimated setup time: 45–60 minutes • ✅ You’ll need: ◦ WhatsApp Business Cloud API access (with webhook configured) ◦ OpenAI API key (Whisper + GPT) ◦ Airtable (to store service packs and client i

Help me set up the n8n workflow "Auto-Generate WhatsApp Proposals from Voice or Text using GPT & APITemplate" (https://n8n.io/workflows/5656). It uses: HTTP Request, APITemplate.io, WhatsApp Business Cloud, AI Agent, OpenAI Chat Model, Simple Memory, Calculator, OpenAI. Import the template JSON into my n8n instance, list every credential I need to create, and walk me through testing it.