AI Image Generation API docs
Generate images from text prompts using open-source AI models. Supports multiple styles, aspect ratios, and upscaling.
Authentication
All AI Image Generation API requests authenticate via two headers. Get your API key from your RapidAPI dashboard after subscribing on the Basic (free) tier or higher.
X-RapidAPI-Key: YOUR_API_KEY X-RapidAPI-Host: ai-image-gen-by-helix-api.p.rapidapi.com
Base URL
https://ai-image-gen-by-helix-api.p.rapidapi.com
Endpoints
POST
/generateGenerate image from text prompt
GET
/modelsList available models
Code Examples
Python
import requests
url = "https://ai-image-gen-by-helix-api.p.rapidapi.com/generate"
headers = {
"X-RapidAPI-Key": "YOUR_API_KEY",
"X-RapidAPI-Host": "ai-image-gen-by-helix-api.p.rapidapi.com",
}
response = requests.post(url, headers=headers)
print(response.json())JavaScript
const response = await fetch(
"https://ai-image-gen-by-helix-api.p.rapidapi.com/generate",
{
method: "POST",
headers: {
"X-RapidAPI-Key": "YOUR_API_KEY",
"X-RapidAPI-Host": "ai-image-gen-by-helix-api.p.rapidapi.com"
}
}
);
const data = await response.json();cURL
curl -X POST "https://ai-image-gen-by-helix-api.p.rapidapi.com/generate" \ -H "X-RapidAPI-Key: YOUR_API_KEY" \ -H "X-RapidAPI-Host: ai-image-gen-by-helix-api.p.rapidapi.com"
Response Format
All endpoints return JSON in this consistent envelope:
{
"status": "ok",
"data": { /* endpoint-specific payload */ },
"meta": {
"cached": false,
"latency_ms": 142,
"request_id": "req_abc123"
},
"timestamp": "2026-05-21T12:00:00Z"
}Error Codes
| HTTP | Code | Meaning |
|---|---|---|
| 400 | BAD_REQUEST | Missing or invalid parameter |
| 401 | UNAUTHORIZED | Invalid or missing API key |
| 403 | FORBIDDEN | Your plan doesn't include this endpoint |
| 429 | RATE_LIMIT_EXCEEDED | Too many requests — back off and retry |
| 500 | INTERNAL_ERROR | Something went wrong on our side |
| 503 | UPSTREAM_UNAVAILABLE | A third-party data source is down |
Common Use Cases
Marketing visuals
Social media content
Game assets
Product mockups
Blog illustrations
E-commerce product photos
Book cover design
App icon generation
Presentation slide graphics
Email banner images
Real estate virtual staging
Fashion design concepts
Logo concept exploration
YouTube thumbnail generation
Ad creative variations
NFT artwork generation
Interior design visualization
Storyboard illustration
Album cover art
Children's book illustrations