Build an All-Source Knowledge Assistant with Claude, RAG, Perplexity, and Drive
Ready for 3.0Ready for 3.0. This template uses no nodes that n8n 3.0 removes. No removed nodes, versions or helpers found. Static check, last run 2026-10-19.
What this workflow does
This AI workflow has 30 nodes and runs manually, when you click “Execute workflow” (plus 3 other triggers). Along the way it connects Postgres Chat Memory, Embeddings OpenAI, Reranker Cohere and Anthropic Chat Model and 6 more.
How it runs
Trigger: Manually, when you click “Execute workflow” (plus 3 other triggers).
- Download file (Google Drive): download
- Knowledge Agent (AI Agent): runs an AI agent, with model: Anthropic Chat Model; 5 tools (Think, structured data, General knowledge, Message a model in Perplexity…); memory: Postgres Chat Memory
- Operation (Switch): routes items into 1 branches
- Add to Supabase Vector DB (Supabase Vector Store): stores documents in the Supabase vector store, with embeddings: Embeddings OpenAI; document loader: Default Data Loader
- Download File (Google Drive): download
- FileType (Switch): routes items into 5 branches
- Extract from PDF (Extract from File): extracts data from a file (pdf)
- Extract from CSV (Extract from File): extracts data from a file
- Analyse Image (OpenAI): analyze (image)
- Transcribe Audio (OpenAI): transcribe (audio)
…plus 2 more steps. See the full node list below.
Services it uses
Before you upgrade to n8n 3.0
Nothing in this workflow is removed in n8n 3.0, so it should import and run after the upgrade.
Nodes used (23)
- Chat Trigger
@n8n/n8n-nodes-langchain.chatTrigger - Postgres Chat Memory
@n8n/n8n-nodes-langchain.memoryPostgresChat - Embeddings OpenAI
@n8n/n8n-nodes-langchain.embeddingsOpenAi - Reranker Cohere
@n8n/n8n-nodes-langchain.rerankerCohere - Anthropic Chat Model
@n8n/n8n-nodes-langchain.lmChatAnthropic - Postgres Tool
n8n-nodes-base.postgresTool - Supabase Vector Store
@n8n/n8n-nodes-langchain.vectorStoreSupabase - Manual Trigger
n8n-nodes-base.manualTrigger - Google Drive
n8n-nodes-base.googleDrive - Default Data Loader
@n8n/n8n-nodes-langchain.documentDefaultDataLoader - Recursive Character Text Splitter
@n8n/n8n-nodes-langchain.textSplitterRecursiveCharacterTextSplitter - Think Tool
@n8n/n8n-nodes-langchain.toolThink - Execute Workflow Trigger
n8n-nodes-base.executeWorkflowTrigger - MCP Server Trigger
@n8n/n8n-nodes-langchain.mcpTrigger - Switch
n8n-nodes-base.switch - Extract from File
n8n-nodes-base.extractFromFile - Edit Fields (Set)
n8n-nodes-base.set - Call n8n Workflow Tool
@n8n/n8n-nodes-langchain.toolWorkflow - Google Drive Tool
n8n-nodes-base.googleDriveTool - OpenAI
@n8n/n8n-nodes-langchain.openAi - MCP Client Tool
@n8n/n8n-nodes-langchain.mcpClientTool - AI Agent
@n8n/n8n-nodes-langchain.agent - Perplexity Tool
n8n-nodes-base.perplexityTool
From the author
📜 Detailed n8n Workflow Description Main Flow The workflow operates through a three-step process that handles incoming chat messages with intelligent tool orchestration: 1. Message Trigger: The When chat message received node triggers whenever a user message…