Name: QR Code Monster – AI Art from QR Codes | $0.01/call | API.market
Brand: magicapi
SKU: api-magicapi-qrcode-monster-image-generator-andreasjansson-illusion
Availability: InStock
Author: API Market

Shashank Agarwal

# 👾 QR Code Monster Image Generator API (ControlNet SD1.5)

## Overview

The QR Code Monster Image Generator API leverages the powerful ControlNet on top of Stable Diffusion 1.5 to generate unique and captivating monster images from QR codes. Designed for speed and precision, this API allows you to transform QR codes into visually stunning artworks with ease.

## Features

- **QR Code Transformation**: Convert any QR code into a monster-themed image.
- **Customizable Prompts**: Guide the image generation with your custom descriptive prompts.
- **High Resolution Outputs**: Generate images with customizable resolutions.
- **ControlNet Integration**: Enhanced image generation using the ControlNet model.
- **Asynchronous Processing**: Efficient handling of requests with status polling.

## Use Cases

- **Marketing and Branding**: Create unique QR codes with monster themes to make marketing campaigns more engaging.
- **Event Promotions**: Customize QR codes for event tickets and promotions with themed visuals.
- **Educational Tools**: Produce engaging educational content with distinct QR codes for learning materials.
- **Gaming Industry**: Generate themed QR codes for gaming merchandise, in-game items, and event promotions.
- **Art and Design**: Enable artists to explore new creative possibilities by transforming standard QR codes into artworks.

## Visual Examples

### Overview Example
![Generated Monster Image](https://blog.api.market/wp-content/uploads/2026/01/code-monster-output.png)

### Example Input and Output
**Input QR Code:**
![Input QR Code](https://blog.api.market/wp-content/uploads/2026/01/code-monster-input-api-market.png)

**Output Monster Image:**
![Output Monster Image](https://blog.api.market/wp-content/uploads/2026/01/code-monster-output.png)

## Pricing

- **Pay As You Go (PAYG)**: You only pay for the images you generate.
- **1 API unit = 1 image** process.
- **GET requests** to check prediction status are free.
- **No monthly subscription fees or usage limits**.

## API Documentation

### Base URL

All API requests should be made to: `https://prod.api.market/api/v1/magicapi/qrcode-monster-image-generator-andreasjansson-illusion`

### Authentication

Authentication is handled via API key. Include your API key in the request header:
```http
x-api-market-key: YOUR_API_MARKET_KEY
```

### Endpoints

#### Create a Prediction

```http
POST /api/v1/magicapi/qrcode-monster-image-generator-andreasjansson-illusion/predictions
```
**Request:**

```json
{
  "version": "75d51a73fce3c00de31ed9ab4358c73e8fc0f627dc8ce975818e653317cb919b",
  "input": {
    "image": "https://example.com/image.jpg",
    "prompt": "An oil painting of medieval city streets with buildings and trees and people",
    "qr_code_content": "https://example.com",
    "guidance_scale": 7.5,
    "num_inference_steps": 40
  }
}
```

**Response:**

```json
{
  "id": "ufawqhfynnddngldkgtslldrkq",
  "version": "75d51a73fce3c00de31ed9ab4358c73e8fc0f627dc8ce975818e653317cb919b",
  "status": "starting",
  "created_at": "2023-01-01T12:00:00.000Z"
}
```

#### Check Prediction Status

```http
GET /api/v1/magicapi/qrcode-monster-image-generator-andreasjansson-illusion/predictions/{id}
```
**Request:**

```http
GET /api/v1/magicapi/qrcode-monster-image-generator-andreasjansson-illusion/predictions/ufawqhfynnddngldkgtslldrkq
```
Headers:
```http
x-api-market-key: YOUR_API_MARKET_KEY
```

**Response:**

```json
{
  "id": "ufawqhfynnddngldkgtslldrkq",
  "status": "succeeded",
  "output": [
    "https://blog.api.market/wp-content/uploads/2026/01/code-monster-output.png"
  ],
  "created_at": "2023-01-01T12:00:00.000Z",
  "started_at": "2023-01-01T12:00:05.000Z",
  "completed_at": "2023-01-01T12:01:00.000Z"
}
```

## Status Codes

- **200 OK**: Request successful
- **201 Created**: Resource successfully created
- **400 Bad Request**: Invalid input parameters
- **401 Unauthorized**: Missing or invalid API key
- **403 Forbidden**: Valid API key but insufficient permissions
- **404 Not Found**: Resource not found
- **429 Too Many Requests**: Rate limit exceeded
- **500 Internal Server Error**: Server-side error
- **503 Service Unavailable**: Service temporarily unavailable

## Rate Limits

- Rate limits are designed to prevent abuse and ensure fair usage patterns.
- Exceeding rate limits will result in `429 Too Many Requests` responses.
- Implement retry logic with exponential backoff to handle `429` responses gracefully.

## Error Handling

To handle errors, check the response status code and examine the error message:

```json
{
  "error": {
    "code": "invalid_parameter",
    "message": "The parameter 'image' is required",
    "status": 400
  }
}
```

Common errors:
- **Invalid Parameters**: Ensure all required parameters are included and valid.
- **Unauthorized**: Verify you are using the correct API key.
- **Rate Limits**: Implement retry logic with exponential backoff for `429` responses.

## Implementation Guide

### Example Code

#### JavaScript Example

```javascript
const apiKey = "YOUR_API_MARKET_KEY";
const baseUrl = "https://prod.api.market/api/v1/magicapi/qrcode-monster-image-generator-andreasjansson-illusion";

async function createAndWaitForPrediction(inputData) {
  try {
    const response = await fetch(`${baseUrl}/predictions`, {
      method: "POST",
      headers: {
        "Content-Type": "application/json",
        "x-api-market-key": apiKey
      },
      body: JSON.stringify({ version: "75d51a73fce3c00de31ed9ab4358c73e8fc0f627dc8ce975818e653317cb919b", input: inputData })
    });

    if (!response.ok) {
      throw new Error(`API error: ${response.status} ${response.statusText}`);
    }

    const prediction = await response.json();
    const predictionId = prediction.id;
    return await pollForResults(predictionId);
  } catch (error) {
    console.error("Error:", error);
    throw error;
  }
}

function delay(ms) {
  return new Promise(resolve => setTimeout(resolve, ms));
}

async function pollForResults(predictionId) {
  const MAX_TIMEOUT = 600000;
  const POLL_INTERVAL = 1000;
  const startTime = Date.now();

  while (Date.now() - startTime < MAX_TIMEOUT) {
    const response = await fetch(`${baseUrl}/predictions/${predictionId}`, {
      headers: {
        "x-api-market-key": apiKey
      }
    });

    if (!response.ok) {
      throw new Error(`API error: ${response.status} ${response.statusText}`);
    }

    const prediction = await response.json();

    if (prediction.status === "succeeded") {
      return prediction.output;
    }

    if (prediction.status === "failed") {
      throw new Error(`Prediction failed: ${prediction.error || "Unknown error"}`);
    }

    await delay(POLL_INTERVAL);
  }

  throw new Error("Prediction timed out after 10 minutes");
}
```

#### Python Example

```python
import requests
import time

API_KEY = "YOUR_API_MARKET_KEY"
BASE_URL = "https://prod.api.market/api/v1/magicapi/qrcode-monster-image-generator-andreasjansson-illusion"

def create_and_wait_for_prediction(input_data):
    headers = {
        "Content-Type": "application/json",
        "x-api-market-key": API_KEY
    }

    response = requests.post(
        f"{BASE_URL}/predictions",
        headers=headers,
        json={"version": "75d51a73fce3c00de31ed9ab4358c73e8fc0f627dc8ce975818e653317cb919b", "input": input_data}
    )

    if response.status_code != 200:
        raise Exception(f"API error: {response.status_code} {response.text}")

    prediction = response.json()
    prediction_id = prediction["id"]
    return poll_for_results(prediction_id)

def poll_for_results(prediction_id):
    MAX_TIMEOUT = 600
    POLL_INTERVAL = 1

    headers = {"x-api-market-key": API_KEY}
    start_time = time.time()

    while time.time() - start_time < MAX_TIMEOUT:
        response = requests.get(f"{BASE_URL}/predictions/{prediction_id}", headers=headers)

        if response.status_code != 200:
            raise Exception(f"API error: {response.status_code} {response.text}")

        prediction = response.json()

        if prediction["status"] == "succeeded":
            return prediction["output"]

        if prediction["status"] == "failed":
            error_msg = prediction.get("error", "Unknown error")
            raise Exception(f"Prediction failed: {error_msg}")

        time.sleep(POLL_INTERVAL)

    raise Exception("Prediction timed out after 10 minutes")
```

#### cURL Example

```bash
# Step 1: Create a prediction
curl -X POST "https://prod.api.market/api/v1/magicapi/qrcode-monster-image-generator-andreasjansson-illusion/predictions" \
  -H "Content-Type: application/json" \
  -H "x-api-market-key: YOUR_API_MARKET_KEY" \
  -d '{
    "version": "75d51a73fce3c00de31ed9ab4358c73e8fc0f627dc8ce975818e653317cb919b",
    "input": {
      "image": "https://example.com/image.jpg"
    }
  }'

# Step 2: Check prediction status
curl -X GET "https://prod.api.market/api/v1/magicapi/qrcode-monster-image-generator-andreasjansson-illusion/predictions/abcd1234" \
  -H "x-api-market-key: YOUR_API_MARKET_KEY"
```

### Performance Optimization
- **Use concise prompts**: Keep your descriptive prompts clear and to the point.
- **Optimize resolution**: Request only the necessary image resolution to minimize processing time.
- **Batch processing**: Group multiple requests to maximize throughput and efficiency.

## FAQ

1. **How long does it take to process a prediction?**
   - Processing time varies with the complexity of the request, typically ranging from a few seconds to a minute.

2. **What is the maximum image resolution supported?**
   - The API supports custom resolutions, with a default of 768x768 pixels.

3. **Is there a limit to the number of images I can generate?**
   - No, there are no usage limits. It's pay-as-you-go, so you only pay for what you generate.

4. **Can I customize the QR code content?**
   - Yes, you can specify the URL or content your QR code points to using the `qr_code_content` parameter.

## Contact Us

If you have any questions or need assistance, you can reach out to us through the embedded chat on the bottom right corner of the page or send an email to hello[at]api.market.

Generate monster-themed art from any QR code via ControlNet. Use custom descriptive prompts. From $0.01/call. Try it free on API.market.