Alt Text Batch (x402)
Generate WCAG-compliant alt text and descriptions for up to 500 images in a single call. Flat $3.00 USDC — no per-image overhead. 100% local inference on Mac Mini.
How to Call
POST https://x402.ntriq.co.kr/alt-text-batch
Content-Type: application/json
X-PAYMENT: <x402-payment-header>
{
"images": [
"https://example.com/product1.jpg",
"https://example.com/product2.jpg"
],
"context": "e-commerce product catalog",
"max_length": 125
}
Parameters
| Parameter | Type | Required | Description |
|---|---|---|---|
images |
array | ✅ | Image URLs (max 500) |
context |
string | ❌ | Shared context for all images |
max_length |
integer | ❌ | Max chars per alt_text (default: 125) |
language |
string | ❌ | Output language (default: en) |
Example Response
{
"status": "ok",
"count": 2,
"results": [
{
"image_url": "https://example.com/product1.jpg",
"status": "ok",
"alt_text": "Red leather office chair with adjustable armrests",
"description": "A high-back executive office chair in red genuine leather with lumbar support."
},
{
"image_url": "https://example.com/product2.jpg",
"status": "ok",
"alt_text": "Blue standing desk with cable management tray",
"description": "An electric height-adjustable standing desk in matte blue finish."
}
]
}
Payment
- Price: $3.00 USDC flat (up to 500 images)
- Network: Base mainnet (EIP-3009 gasless)
- Protocol: x402
curl https://x402.ntriq.co.kr/services