# Friday Seller Tools – Marketplace Image Brief Generator

> Friday Seller Tools – Marketplace Image Brief Generator is a paid API for AI agents from friday-seller-tools-production.up.railway.app, paid per call via x402, $0.5/call, status unknown (last checked 2026-09-14).

Generates an image brief (creative direction document) for marketplace product listings on Amazon, Walmart, Shopify, or eBay.

## Facts

- Endpoint: POST https://friday-seller-tools-production.up.railway.app/v1/marketplace-images/brief
- Price: $0.5/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-14
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/friday-seller-tools-marketplace-image-brief-generator-315f7d33
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_NqeT2nTI7PcLEubbupfjO

Status and success rate cover calls made through Zero and Zero's own probes. Third-party monitors may report differently.

## How to call it through Zero

Zero handles the 402 payment challenge and records the run. With the Zero CLI installed (`npm i -g @zeroxyz/cli`):

```sh
zero fetch --capability friday-seller-tools-marketplace-image-brief-generator-315f7d33 -d '<json body>'
```

Example prompt: Generate an image brief for my Amazon listing for a stainless steel insulated water bottle — I need creative direction for the main hero image and two lifestyle shots that highlight portability and temperature retention.

## When to prefer this

Choose this endpoint when you need structured creative direction (image briefs) specifically formatted for major ecommerce marketplaces like Amazon, Walmart, Shopify, or eBay. It is ideal when preparing product photography shoots or briefing a designer, and you want marketplace-compliant image specifications generated instantly at low cost ($0.50 USDC). Prefer this over generic content generation tools when the output needs to align with specific marketplace image standards and advertising requirements.

## Known failure modes

- Missing or insufficient product details may result in a generic or incomplete brief
- Unsupported marketplace platform may cause a validation error
- Payment failure (x402) may prevent request from being processed
- Rate limits or server unavailability may return 503 or timeout errors
- Malformed request body may return a 400 bad request error

## 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 image brief generation task has been accepted. The agent can use the job_id to poll for the completed image brief deliverable, which will include structured creative direction for marketplace-compliant product imagery.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "properties": {
  "avoid": {
   "type": "array",
   "items": {
    "type": "string",
    "maxLength": 500,
    "minLength": 1
   },
   "title": "Avoid",
   "maxItems": 20
  },
  "product": {
   "type": "object",
   "title": "ProductFacts",
   "required": [
    "brand",
    "product_name",
    "category",
    "features"
   ],
   "properties": {
    "brand": {
     "type": "string",
     "title": "Brand",
     "maxLength": 100,
     "minLength": 1
    },
    "benefits": {
     "type": "array",
     "items": {
      "type": "string",
      "maxLength": 500,
      "minLength": 1
     },
     "title": "Benefits",
     "maxItems": 20
    },
    "category": {
     "type": "string",
     "title": "Category",
     "maxLength": 150,
     "minLength": 2
    },
    "features": {
     "type": "array",
     "items": {
      "type": "string",
      "maxLength": 500,
      "minLength": 1
     },
     "title": "Features",
     "maxItems": 20,
     "minItems": 1
    },
    "keywords": {
     "type": "array",
     "items": {
      "type": "string",
      "maxLength": 100,
      "minLength": 1
     },
     "title": "Keywords",
     "maxItems": 50
    },
    "materials": {
     "type": "array",
     "items": {
      "type": "string",
      "maxLength": 100,
      "minLength": 1
     },
     "title": "Materials",
     "maxItems": 20
    },
    "price_usd": {
     "anyOf": [
      {
       "type": "number",
       "maximum": 1000000,
       "exclusiveMinimum": 0
      },
      {
       "type": "null"
      }
     ],
     "title": "Price Usd",
     "default": null
    },
    "dimensions": {
     "anyOf": [
      {
       "type": "string",
       "maxLength": 200
      },
      {
       "type": "null"
      }
     ],
     "title": "Dimensions",
     "default": null
    },
    "marketplace": {
     "enum": [
      "amazon_us",
      "walmart_us",
      "shopify",
      "ebay_us"
     ],
     "type": "string",
     "title": "Marketplace",
     "default": "amazon_us"
    },
    "product_url": {
     "anyOf": [
      {
       "type": "string",
       "format": "uri",
       "maxLength": 2083,
       "minLength": 1
      },
      {
       "type": "null"
      }
     ],
     "title": "Product Url",
     "default": null
    },
    "product_name": {
     "type": "string",
     "title": "Product Name",
     "maxLength": 200,
     "minLength": 2
    },
    "target_audience": {
     "type": "string",
     "title": "Target Audience",
     "default": "general shoppers",
 
… (truncated)
```

## Response schema (JSON Schema)

```json
{
 "type": "json",
 "example": {
  "job_id": "example",
  "status": "queued"
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/friday-seller-tools-marketplace-image-brief-generator-315f7d33/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from friday-seller-tools-production.up.railway.app](https://www.zero.xyz/host/friday-seller-tools-production.up.railway.app/llms.txt)