Multi-agent workflow with accuracy evaluation in n8n

# Chat query processing with agent action evaluation against Google Sheets

This workflow processes incoming chat messages using a LangChain-based multi-agent system in n8n. The agent decides whether to use web search, vector database lookup, calculation, or summarization — then its actions are compared against ground truth data in Google Sheets to evaluate correctness. Ideal for testing and improving AI agent logic.

## Who it´s for
- AI agent developers testing tool selection accuracy
- MLOps engineers evaluating agent performance
- Teams building multi-step AI solutions with quality control
- Analysts comparing agent behavior against reference scenarios

## What the automation does
- Triggers on incoming chat messages
- Activates a LangChain-based multi-agent system to analyze the query
- Selects and applies the correct tool: Qdrant (vector search), Firecrawl (web search), calculator, or summarizer
- Compares used tools against reference actions from Google Sheets
- Records evaluation metrics for correctness of tool usage
- Stores results for performance analysis

## What´s included
- Ready-to-use n8n workflow
- Trigger and handler logic based on chat messages and Google Sheets data
- Integrations with Qdrant, Firecrawl, Google Sheets API, OpenRouter, and OpenAI
- Basic text instructions for launch and adaptation

## Requirements for setup
- n8n instance with access to HTTP API and environment variables
- Qdrant account (vector database)
- Firecrawl API key for web search
- Google Sheets account with read/write permissions
- OpenRouter or OpenAI API key for LLM operations

## Benefits and outcomes
- Automated validation of AI agent decision logic
- Tool selection accuracy assessment without manual testing
- Scalable testing across hundreds of scenarios
- Streamlined comparison of model and strategy performance

## Important: template only
Important: you are purchasing a ready-made automation workflow template only. Rollout into your infrastructure, connecting specific accounts and services, 1:1 setup help, custom adjustments for non-standard stacks and any consulting support are provided as a separate paid service at an individual rate. To discuss custom work or 1:1 help, contact via chat