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Friday Seller Tools – Alt Text Pack Generator
x402
Friday Seller Tools – Alt Text Pack Generator is a paid API for AI agents from friday-seller-tools-production.up.railway.app, paid per call via x402, $0.25/call, status unknown (last checked 2026-09-15).
Generates a pack of SEO-optimized alt text descriptions for marketplace product images across Amazon, Walmart, Shopify, and eBay.
Price / call$0.25
Success—
StatusUnknown
How this service works
Instant, low-cost Amazon, Walmart, Shopify, and eBay listing, upload-preparation, advertising, and image-brief deliverables.
Output
Returns a job_id and queued status immediately; the completed alt text pack contains SEO-optimized, marketplace-ready alt text strings for each product image, formatted for use across Amazon, Walmart, Shopify, or eBay listing upload workflows.
Example use cases
Amazon product image accessibility pack
“Create an alt text pack for my Amazon listing for the 'CloudWalk Running Shoes' in the Sports & Outdoors category — I need keyword-rich, ADA-compliant alt text for all my product images so they rank better in search.”
Shopify store image SEO boost
“I'm setting up my Shopify store for my handmade soy candles brand 'Lumière & Co' and need an alt text pack generated for all my product photos to improve SEO and accessibility.”
eBay seller listing image descriptions
“Generate a full alt text pack for my eBay listing for a vintage Leica M6 film camera — I need descriptive, search-optimized alt text for each of my product images.”
Technical details
Endpoint
POSThttps://friday-seller-tools-production.up.railway.app/v1/marketplace-images/alt-text-packWhen to prefer
Choose this endpoint when you need ready-to-upload, SEO-optimized alt text for marketplace product images in bulk — especially when targeting Amazon, Walmart, Shopify, or eBay simultaneously. It is purpose-built for seller workflows at $0.25 per call, making it cost-effective compared to general-purpose LLM prompting for alt text generation at scale.
Side effects
- Missing required product or image data returns a 400 validation error
- Payment not processed (x402 protocol failure) results in 402 Payment Required
- Server overload or cold-start on Railway may cause delayed queuing
- Invalid marketplace target returns an error or fallback generic copy
- Job not found when polling with job_id if it expired or never queued
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| images | array | |
| product | object | |
| caption_max_characters | integer | |
| alt_text_max_characters | integer |
Output
Schema · Response
{
"type": "json",
"example": {
"job_id": "example",
"status": "queued"
}
}Tags
x402
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