h3ai

n8n community node for OpenAI API integration. Create powerful AI automations with ChatGPT, DALL-E, Whisper, and Embeddings.

Features

• 🤖 Chat Completions - GPT-4o, GPT-4 Turbo, GPT-3.5 Turbo
• 🎨 Image Generation - DALL-E 2 and DALL-E 3
• 🎤 Transcription - Whisper speech-to-text
• 📊 Embeddings - Text embeddings for semantic search

Installation

npm install h3ai

Or install via n8n UI:

1. Go to Settings > Community Nodes
2. Enter h3ai in the search field
3. Click Install

Setup

1. Get your API key from OpenAI Platform
2. In n8n, go to Credentials
3. Add new credential: "H3Ai API"
4. Paste your API key

Usage

Chat Completion

// System prompt with user message
{
  "operation": "chat",
  "model": "gpt-4o-mini",
  "messages": [
    { "role": "system", "content": "You are a helpful assistant" },
    { "role": "user", "content": "Hello!" }
  ],
  "temperature": 0.7,
  "maxTokens": 1024
}

Image Generation

{
  "operation": "image",
  "model": "dall-e-3",
  "prompt": "A futuristic city skyline at sunset",
  "size": "1024x1024",
  "quality": "hd"
}

Transcription

{
  "operation": "transcription",
  "audioFile": "/path/to/audio.mp3",
  "language": "pt"  // Optional: Portuguese
}

Embeddings

{
  "operation": "embeddings",
  "text": "Your text to embed",
  "model": "text-embedding-3-small"
}

Error Handling

The node supports "Continue On Fail" mode. When enabled, errors are returned as JSON instead of stopping the workflow.

Requirements

• n8n version 1.0.0 or higher
• OpenAI API key

License

MIT

Support

• GitHub Issues
• OpenAI Documentation

Made with ❤️ by h3ai