Automate AI Tool Call Evaluation with n8n
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This n8n workflow automatically evaluates whether a specific AI tool was called by your agent. It integrates with Google Sheets for test data and OpenAI for AI processing, providing a robust solution for monitoring and improving AI agent performance.
About This Workflow
This advanced n8n workflow is designed to objectively measure the performance of your AI agents by evaluating whether they correctly utilize specified tools. It leverages the power of Langchain and OpenAI's GPT-4o-mini model to process user queries and determine tool invocation. The workflow triggers from a chat message, fetches test data from a Google Sheet containing questions and expected tool calls, and then utilizes an AI Agent to decide which tool to use. A crucial 'Check if tool called' node verifies the agent's decision against the expected outcome, enabling you to gather concrete data on tool usage. This template is ideal for anyone looking to gain deeper insights into their AI's decision-making process and optimize its efficiency.
Key Features
- Automated Tool Call Verification: Precisely checks if an AI agent invokes the intended tool.
- Langchain & OpenAI Integration: Utilizes powerful AI models for intelligent decision-making.
- Google Sheets Data Integration: Easily import test cases and expected tool calls.
- Intermediate Step Tracking: Captures detailed AI agent execution logs for analysis.
- Workflow Evaluation Framework: Seamlessly integrates with n8n's evaluation system to track metrics.
How To Use
- Set up Google Sheets Credentials: Ensure your n8n instance has access to your Google Sheets account via OAuth2.
- Configure the
When fetching a dataset rownode: Update thesheetNameanddocumentIdparameters to point to your specific Google Sheet containing test questions and expected tool calls. - Configure OpenAI Credentials: Add your OpenAI API key to n8n.
- Set up the
OpenAI Chat Modelnode: Select your desired OpenAI model (e.g.,gpt-4o-mini). - Configure the
AI Agentnode: Ensure 'Return intermediate steps' is enabled for detailed logging. - Customize the
Check if tool callednode: Adjust thetool_to_callvariable to match the tool you want to evaluate from your dataset. - Connect the
AI Agentnode: Ensure itsai_tooloutput is connected to theCalculatornode. - Enable the
When chat message receivednode: This acts as your trigger for initiating an evaluation cycle.
Apps Used
Workflow JSON
{
"id": "fbb440d6-5535-4c81-8309-0639758d6c59",
"name": "Automate AI Tool Call Evaluation with n8n",
"nodes": 29,
"category": "DevOps",
"status": "active",
"version": "1.0.0"
}Note: This is a sample preview. The full workflow JSON contains node configurations, credentials placeholders, and execution logic.
Get This Workflow
ID: fbb440d6-5535...
About the Author
DevOps_Master_X
Infrastructure Expert
Specializing in CI/CD pipelines, Docker, and Kubernetes automations.
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