Gemini Live Voice Support n8n Workflow w/ Drive & Sheets

Gemini Live Voice Support for Your Store—Powered by n8n, Drive, and Sheets

Deploy a ready-to-run Gemini Live Voice Support automation in n8n that creates secure single-use Gemini ephemeral tokens, loads your knowledge base from Google Drive, and handles real customer tool calls like order status, returns/exchanges, and complaints—logging everything to Google Sheets and notifying the owner via Gmail.

What this workflow does

• Creates a Gemini Live voice session: Receives a POST webhook request to start a new session.
• Applies rate limits: Enforces daily and per-IP rate limiting before proceeding.
• Builds a knowledge base from Google Drive: Lists and downloads supported knowledge files from a specified Drive folder, then combines them into a single system prompt.
• Generates secure session credentials: Creates the Gemini Live session configuration (voice, model, and tool schema), signs session metadata with an HMAC, and requests a single-use ephemeral token.
• Returns session details to the client: Responds with the token, model, WebSocket URL, signed metadata, and the tool-callback URL.
• Handles tool-call webhooks: Validates the HMAC signature and expiry, enforces a per-session tool-call limit, and routes authorized tools.
• Connects customers to store operations: Reads order data from Google Sheets for status, verifies and appends return/exchange requests to Google Sheets and emails the owner, logs complaints to Google Sheets and emails the owner, or notifies the owner for unanswered questions.
• Returns results or errors: Sends JSON tool results, or error responses for missing info, rate limits, unknown tools, or unauthorized calls.

Use cases

• Voice-based order status for e-commerce shoppers
• Automated return/exchange request intake with owner notification
• Complaint logging to Google Sheets with Gmail alerts
• Fallback owner notifications when questions can’t be answered from your Drive knowledge

Technical details

• n8n nodes/logic: if, set, code, switch, gmail, crypto
• Integrations: Google Drive (knowledge files), Google Sheets (orders + logging), Gmail (owner notifications), Gemini Live (ephemeral token + WebSocket/session + tool callbacks)
• Security: HMAC signing/validation for session metadata and tool-call authorization