LangChain Example: Workflow Retriever

Name: LangChain Example: Workflow Retriever
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Author: Free N8N

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AI / Machine Learningailangchainopenaiqaretrievalworkflow

Retrieve information from a specific n8n workflow using LangChain.

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About This Workflow

Overview

This workflow demonstrates how to use LangChain to retrieve and query information from another n8n workflow. It simulates a Q&A scenario where specific data can be extracted from a designated 'retriever' workflow.

Key Features

Integrates LangChain for advanced retrieval and Q&A.
Utilizes an n8n workflow as a data source for retrieval.
Configurable OpenAI model for processing.
Includes example prompts and error handling.

How To Use

Import this workflow into your n8n instance.
Configure the OpenAI API credentials.
Locate the Workflow Retriever node (e0edb9ab-c59f-4d34-983d-861bb2df4f01).
Replace the placeholder workflowId with the actual ID of the n8n workflow you want to use as a retriever.
Execute the workflow by clicking the 'Execute Workflow' button on the When clicking "Execute Workflow" node.

Apps Used

langchain

openai

retrieval

workflow

Workflow JSON

{
  "id": "a47fbf83-cef6-49d1-a30f-33882f2a46d0",
  "name": "LangChain Example: Workflow Retriever",
  "nodes": 0,
  "category": "AI / Machine Learning",
  "status": "active",
  "version": "1.0.0"
}

Note: This is a sample preview. The full workflow JSON contains node configurations, credentials placeholders, and execution logic.