# Qwen 3 Pro API Documentation

> LLM-optimized documentation for Qwen 3 Pro. Copy into your AI assistant for integration help.

## Overview

**Model ID:** `qwen-3-pro`
**Type:** Image Generation
**Credit Cost:** 2 credits per image

Qwen Image 3.0 Pro — text-to-image generation and image editing in one model. Generate from a prompt, or supply 1-3 reference images plus an instruction.

## Endpoint

```
POST https://pixeldojo.ai/api/v1/models/qwen-3-pro/run
```

## Authentication

All requests require an API key in the Authorization header:

```
Authorization: Bearer YOUR_API_KEY
```

Get your API key: https://pixeldojo.ai/api-platform/api-keys

## Input Parameters

| Parameter | Type | Required | Default | Description |
|-----------|------|----------|---------|-------------|
| `prompt` | string | Yes | - | What to create, or the edit instruction when reference images are supplied. |
| `image` | array | No | - | One to three input images. Omit for pure text-to-image generation. Accepts a single URL string or an array of URLs. Image order defines the array sequence; the output aspect ratio matches the last image when size is omitted. Accepted formats: JPG / JPEG / PNG / BMP / TIFF / WEBP / GIF; max 10 MB each. |
| `size` | enum | No | - | Output image dimensions (width*height). Optional. In text-to-image mode, omitting it lets the model pick a resolution that suits the prompt; in edit mode it matches the input image's resolution. Pricing: 1K sizes cost 1 credit per image, 2K sizes cost 2 credits per image, and omitting size (auto) costs 2 credits per image. Total pixels stay between 512² and 2048²; the model rounds to the nearest multiple of 16. (Options: 1024*1024, 768*1152, 1152*768, 960*1280, 1280*960...) |
| `n` | integer | No | 1 | Number of images to generate (1-6). Credit cost is per image. (min: 1, max: 6) |
| `negative_prompt` | string | No | - | What to avoid in the output. |
| `prompt_extend` | boolean | No | false | Server-side LLM prompt rewriting. Off by default so your exact edit instruction is followed. Turn on to auto-enhance short prompts. |
| `watermark` | boolean | No | false | Adds a "Qwen-Image" watermark to the bottom-right corner. |
| `seed` | integer | No | - | Random seed (0–2147483647). Same seed + same inputs yields similar (not identical) outputs. Omit for random. (min: 0, max: 2147483647) |



## Capabilities

- Text to Image
- Image to Image
- NSFW Content

## Quick Start

### 1. Submit a Job

```bash
curl -X POST "https://pixeldojo.ai/api/v1/models/qwen-3-pro/run" \
  -H "Authorization: Bearer YOUR_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{
    "prompt": "A corner bakery at golden hour, hand-painted window sign reading FLOUR & SALT in worn gold leaf, smaller chalkboard below reading Fresh Sourdough Daily, warm morning light"
  }'
```

**Response:**
```json
{
  "jobId": "job_abc123...",
  "status": "pending",
  "statusUrl": "https://pixeldojo.ai/api/v1/jobs/job_abc123",
  "creditCost": 2,
  "creditsRemaining": 95
}
```

### 2. Poll for Results

```bash
curl "https://pixeldojo.ai/api/v1/jobs/job_abc123" \
  -H "Authorization: Bearer YOUR_API_KEY"
```

**Completed Response:**
```json
{
  "jobId": "job_abc123...",
  "status": "completed",
  "output": {
    "images": ["https://temp.pixeldojo.ai/..."]
  },
  "creditCost": 2
}
```

## Python Example

```python
import requests
import time

API_KEY = "YOUR_API_KEY"

# Submit job
response = requests.post(
    "https://pixeldojo.ai/api/v1/models/qwen-3-pro/run",
    headers={
        "Authorization": f"Bearer {API_KEY}",
        "Content-Type": "application/json"
    },
    json={
        "prompt": "A corner bakery at golden hour, hand-painted window sign reading FLOUR & SALT in worn gold leaf, smaller chalkboard below reading Fresh Sourdough Daily, warm morning light"
    }
)

job = response.json()
job_id = job["jobId"]

# Poll for completion
while True:
    status_response = requests.get(
        f"https://pixeldojo.ai/api/v1/jobs/{'{job_id}'}",
        headers={"Authorization": f"Bearer {API_KEY}"}
    )
    status = status_response.json()
    
    if status["status"] == "completed":
        print("Output:", status["output"])
        break
    elif status["status"] == "failed":
        print("Error:", status.get("error"))
        break
    
    time.sleep(2)
```

## JavaScript Example

```javascript
const API_KEY = 'YOUR_API_KEY';

// Submit job
const submitResponse = await fetch('https://pixeldojo.ai/api/v1/models/qwen-3-pro/run', {
  method: 'POST',
  headers: {
    'Authorization': `Bearer ${API_KEY}`,
    'Content-Type': 'application/json'
  },
  body: JSON.stringify({
    "prompt": "A corner bakery at golden hour, hand-painted window sign reading FLOUR & SALT in worn gold leaf, smaller chalkboard below reading Fresh Sourdough Daily, warm morning light"
  })
});

const job = await submitResponse.json();

// Poll for completion
const pollForResult = async (jobId) => {
  while (true) {
    const statusResponse = await fetch(`https://pixeldojo.ai/api/v1/jobs/${jobId}`, {
      headers: { 'Authorization': `Bearer ${API_KEY}` }
    });
    const status = await statusResponse.json();
    
    if (status.status === 'completed') return status.output;
    if (status.status === 'failed') throw new Error(status.error);
    
    await new Promise(r => setTimeout(r, 2000));
  }
};

const output = await pollForResult(job.jobId);
console.log('Output:', output);
```

## Error Codes

| Code | Status | Description |
|------|--------|-------------|
| `unauthorized` | 401 | Invalid or missing API key |
| `insufficient_credits` | 402 | Not enough credits |
| `invalid_request` | 400 | Invalid parameters |
| `model_not_found` | 404 | Model ID not found |
| `rate_limited` | 429 | Too many requests |
| `internal_error` | 500 | Server error |

## Links

- **Full Documentation:** https://pixeldojo.ai/api-platform/qwen-3-pro
- **API Keys:** https://pixeldojo.ai/api-platform/api-keys
- **Buy Credits:** https://pixeldojo.ai/api-platform/buy-credits
- **All Models:** https://pixeldojo.ai/api/v1/models
- **OpenAPI Spec:** https://pixeldojo.ai/api/openapi