n8n is a powerful workflow automation tool that now supports AI agents, enabling you to integrate LLMs (like OpenAI, Mistral, or Gemini) into your workflows. By combining n8n with Node.js, you can extend its capabilities for custom logic, APIs, and data processing.
Step-by-Step Integration
1. Set Up an n8n AI Agent Workflow
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Install n8n (self-hosted or cloud).
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Add an AI Agent node (supports OpenAI, Anthropic, etc.).
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Configure your AI model (e.g., GPT-4 for text generation).
2. Call a Custom Node.js API from n8n
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Build a Node.js API (Express.js) to:
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Pre-process data before sending to AI.
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Post-process AI responses (e.g., filtering, validation).
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Expose an endpoint
3. Connect n8n to Node.js via HTTP Request
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Use n8nās HTTP Request node to call your Node.js API.
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Pass AI output to Node.js for further processing.
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Return refined data to other apps (Slack, DBs, etc.).
4. Deploy & Scale
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Host Node.js on Railway, Render, or AWS.
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Use n8n webhooks for real-time triggers.
By combining n8nās AI agents with Node.js, you get the best of both:
No-code automation + custom code flexibility and AI power + full control over data.
Start small, test, and scale your hybrid AI workflows!