n8n Customer Support RAG Chatbot with OpenAI, Drive & Telegram

Instant n8n Customer Support RAG Chatbot—powered by OpenAI, Google Drive, and Telegram handoff

Turn your documents into a customer-facing chatbot in n8n. This workflow lets customers get accurate answers from your own Google Drive files using RAG, and when the bot can’t help (or a person is requested), it immediately pings your team via Telegram with the full conversation context.

What this workflow does

• Customer chat on n8n’s hosted page: Share the chat link or embed the n8n chat page on your site so customers can ask questions.
• RAG searches your knowledge before answering: The AI agent queries your indexed documents each time, following instructions to never invent facts—it relies on your policies instead of hallucinating.
• Auto-indexing from Google Drive: Place support files in a single Google Drive folder. When files are added or updated, they’re downloaded and indexed into n8n’s built-in vector store—no Pinecone, Qdrant, or other external database is required.
• Human handoff when needed: If the bot can’t answer (or the customer asks for a person), your team receives a Telegram ping containing the conversation context. The customer is told a teammate is coming.
• Two flows on one canvas: The indexing pipeline keeps your knowledge base synced; the chat flow answers customers from it.

Use cases

• SaaS support automation for policies, FAQs, and troubleshooting guides stored in Google Drive.
• Reducing repetitive tickets while preserving accuracy through RAG over your own documentation.
• Escalating edge cases to a human support agent via Telegram—without losing context.

Technical details

• OpenAI (or compatible) credentials for Support Chat Model, Knowledge Base Embeddings, and Indexing Embeddings.
• Google Drive triggers: “When a Knowledge File Is Added” and “When a Knowledge File Changes,” plus “Download the File From Drive.”
• Telegram handoff using a bot created with @BotFather; paste the token into the N8n URL configuration.
• Nodes/logic include if, set, sticky note, google drive, http request, and n8nn8n-nodes-langchainagent.