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Friday Seller Tools – Marketplace Listing Build
x402
Friday Seller Tools – Marketplace Listing Build 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 2026-09-13).
Generates Amazon, Walmart, Shopify, and eBay listing content, upload-preparation files, advertising copy, and image briefs for a product in one call.
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 status ('queued'), indicating the listing build job has been accepted. The full deliverable — including marketplace-optimized title, bullet points, description, advertising copy, and image brief — is retrieved once the job completes, formatted and ready for direct upload to the chosen marketplace.
Example use cases
Amazon launch for new product
“I'm launching a new yoga mat on Amazon — can you build me a full listing with an SEO-optimized title, bullet points, product description, and a sponsored ad headline? The mat is eco-friendly, 6mm thick, and comes in three colors.”
Walmart upload prep for existing SKU
“I need a Walmart-ready listing for my Bluetooth earbuds — model number BT-500, water-resistant, 8-hour battery — including the title, description, and an upload-preparation file I can submit to Walmart Marketplace.”
eBay listing with image brief
“Write me an eBay listing for my vintage cast iron skillet, 10-inch, pre-seasoned, and include an image brief so my photographer knows exactly what shots to take for the listing.”
Technical details
Endpoint
POSThttps://friday-seller-tools-production.up.railway.app/v1/listing/buildWhen to prefer
Choose this endpoint when you need instant, low-cost ($0.25 per call) marketplace listing content across Amazon, Walmart, Shopify, or eBay — especially when you want upload-ready files, advertising copy, and image briefs generated together in a single automated step rather than assembling them from separate tools or manual copywriters.
Side effects
- Missing required product information results in a validation error
- Unsupported marketplace name causes a bad request error
- Payment failure via x402 protocol blocks job creation
- Job queued but times out before completion
- Generated content may not fully comply with latest marketplace policy changes
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| tone | string | |
| product | object | |
| include_search_terms | boolean |
Output
Schema · Response
{
"type": "json",
"example": {
"job_id": "example",
"status": "queued"
}
}Tags
x402
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