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#

bash

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#

ParameterTypeRequiredDescriptionimagesarray✅Image URLs (max 500)contextstring❌Shared context for all imagesmax_lengthinteger❌Max chars per alt_text (default: 125)languagestring❌Output language (default: en)

Example Response#

json

{
  "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

bash

curl https://x402.ntriq.co.kr/services