This advanced n8n workflow orchestrates a multi-agent AI evaluation system designed to process user queries, fetch relevant data, and evaluate tool usage via Chat and Evaluation nodes. It integrates Google Sheets, external search APIs, and language models to provide intelligent, automated responses. For example, it can evaluate whether specific tools were called during a query, summarize findings, and respond accordingly, making it highly suitable for complex AI-assistant scenarios, knowledge base querying, or automated decision-making systems.

Node Count	11 – 20 Nodes
Nodes Used	@n8n/n8n-nodes-langchain.agent, @n8n/n8n-nodes-langchain.chatTrigger, @n8n/n8n-nodes-langchain.embeddingsOpenAi, @n8n/n8n-nodes-langchain.lmChatOpenRouter, @n8n/n8n-nodes-langchain.toolCalculator, @n8n/n8n-nodes-langchain.toolWorkflow, @n8n/n8n-nodes-langchain.vectorStoreQdrant, evaluation, evaluationTrigger, httpRequestTool, noOp, set