GPT Personal Chat Assistant for Gmail, Calendar & Drive (n8n)

ChatGPT-style personal assistant—right inside n8n—for your Gmail, Calendar, and Drive

This n8n workflow turns a public Chat Trigger into a conversational “GPT Personal Chat Assistant” that can understand your request and take action across Gmail, Google Calendar, Google Drive, Google Sheets, and WhatsApp (via Whapi), with optional Weather and calculator support.

What this workflow does

• Receives your message from the public n8n Chat trigger.
• Understands intent with OpenAI using a buffer memory window to maintain short conversational context.
• Routes Gmail requests to Gmail actions to send, reply, draft, fetch, or delete messages.
• Routes scheduling requests to Google Calendar to list events, get event details, create events, update event summaries, or delete events.
• Routes file requests to Google Drive to search, download, upload, move, create folders, or delete files.
• Routes spreadsheet requests to Google Sheets to read rows, append or update data, and create or delete sheets.
• Routes messaging requests to WhatsApp using the Whapi HTTP API to send a text message.
• Combines results for weather and math by calling the referenced Weather sub-workflow (SUB — Weather) and a built-in calculator tool.

Use cases

• “Send this email to Alex” or “Draft a reply to my last customer message.”
• “What meetings do I have tomorrow?” or “Create a calendar event for next Tuesday.”
• “Find the latest PDF in Drive and download it,” or “Create a folder for Project Atlas.”
• “Append a new row to my sheet” or “Update the status column for row 42.”
• “Send a WhatsApp message to this number with today’s summary.”

Technical details

• OpenAI integration with buffer memory via n8n-nodes-langchainagent.
• Tools/nodes used include gmail tool, google drive tool, http request tool, and google sheets tool (plus Google Calendar via OAuth2).
• Weather handled by the referenced SUB — Weather sub-workflow; WhatsApp via Whapi using your API token and recipient format.

Perfect for n8n users, automation engineers, and SaaS operators who want a practical, chat-driven personal assistant that works across the Google workspace and WhatsApp.