n8n Vector Database as a Big Data Analysis Tool for AI Agents (22 KNN)

This n8n workflow demonstrates a foundational pattern for interacting with external APIs and processing data conditionally. While the workflow name suggests a complex use case involving vector databases and AI agents, the current JSON definition provides a basic structure for making an HTTP request, evaluating its response, and performing subsequent actions.

What it does

This workflow outlines a process that:

1. Triggers Execution: Starts when explicitly called by another n8n workflow (e.g., as a sub-workflow).
2. Makes an HTTP Request: Initiates an API call to an external service. This is where you would configure your interaction with a vector database or any other data source.
3. Processes API Response: Evaluates the data received from the HTTP request.
4. Conditional Logic: Checks a condition based on the API response.
   • If the condition is true, it proceeds to edit the fields of the data.
   • If the condition is false, it executes custom JavaScript code.
5. Transforms Data (Conditional):
   • If the condition was true, it uses a "Set" node to modify or add fields to the incoming data.
   • If the condition was false, it uses a "Code" node to perform custom data manipulation using JavaScript.

Prerequisites/Requirements

• n8n Instance: A running instance of n8n to import and execute the workflow.
• External API Endpoint: The URL and any necessary authentication (e.g., API keys, tokens) for the API you intend to call in the "HTTP Request" node. This would typically be your vector database or other data analysis service.

Setup/Usage

1. Import the Workflow:
   • Copy the provided JSON code.
   • In your n8n instance, click "Workflows" in the left sidebar.
   • Click "New" -> "Import from JSON".
   • Paste the JSON code and click "Import".
2. Configure the "HTTP Request" Node (Node 19):
   • Double-click the "HTTP Request" node.
   • Set the URL, Method (e.g., GET, POST), Headers, and Body according to the requirements of your external API.
   • If your API requires authentication (e.g., API Key, OAuth2), configure the appropriate credentials.
3. Configure the "If" Node (Node 20):
   • Double-click the "If" node.
   • Define the condition(s) that will determine the flow of your data. For example, you might check if a specific field from the HTTP Request response exists or meets a certain value.
4. Configure the "Edit Fields (Set)" Node (Node 38):
   • If the "If" node's condition evaluates to true, this node will be executed.
   • Double-click the "Edit Fields (Set)" node.
   • Add or remove fields, or set specific values based on your needs when the condition is met.
5. Configure the "Code" Node (Node 834):
   • If the "If" node's condition evaluates to false, this node will be executed.
   • Double-click the "Code" node.
   • Write your custom JavaScript logic to process the data when the condition is not met.
6. Activate the Workflow:
   • Ensure all necessary configurations are complete.
   • Click the "Activate" toggle in the top right corner of the workflow editor to enable it.

This workflow is designed to be triggered by another workflow, making it suitable for modularizing complex processes or creating reusable API interaction patterns.