# Friday Seller Tools – Variation Family Plan

> Friday Seller Tools – Variation Family Plan 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 upload-ready variation family plan deliverables for multi-variant product listings across Amazon, Walmart, Shopify, and eBay.

## Facts

- Endpoint: POST https://friday-seller-tools-production.up.railway.app/v1/catalog/variation-family-plan
- Price: $0.25/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-15
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/friday-seller-tools-variation-family-plan-4ca15f81
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_Xxj6_msr7Fzrs9yKdLNp3

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-variation-family-plan-4ca15f81 -d '<json body>'
```

Example prompt: Create a variation family plan for my Amazon listing — the product is a cotton t-shirt called 'CloudSoft Tee' available in sizes S, M, L, XL and colors black, white, and navy, with a separate SKU for each combination.

## When to prefer this

Choose this endpoint when you need to programmatically generate structured variation family plans for multi-SKU products destined for Amazon, Walmart, Shopify, or eBay. It is ideal for sellers onboarding large catalogs with parent-child relationships, apparel or consumer goods with multiple attributes (size, color, etc.), and agents automating marketplace listing preparation pipelines. Prefer this over manual spreadsheet tools or generic AI text generation when you need marketplace-specific upload-ready output at low cost ($0.25/call).

## Known failure modes

- Missing or incomplete product variation attributes returns a validation error
- Unsupported marketplace target causes a rejection
- Malformed SKU data results in processing failure
- Payment not included or insufficient USDC triggers x402 payment required error
- Downstream generation service unavailable returns a queued timeout

## 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) immediately, indicating the variation family plan generation has been accepted. The resulting deliverable includes a structured parent-child variation plan with SKU mappings, variation theme definitions, and upload-ready catalog data formatted for the target marketplace (Amazon, Walmart, Shopify, or eBay).

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "properties": {
  "variants": {
   "type": "array",
   "items": {
    "type": "object",
    "title": "VariationChild",
    "required": [
     "sku",
     "product_name",
     "attributes"
    ],
    "properties": {
     "sku": {
      "type": "string",
      "title": "Sku",
      "pattern": "^[A-Za-z0-9._-]+$",
      "maxLength": 80,
      "minLength": 1
     },
     "attributes": {
      "type": "array",
      "items": {
       "type": "object",
       "title": "VariationAttribute",
       "required": [
        "name",
        "value"
       ],
       "properties": {
        "name": {
         "type": "string",
         "title": "Name",
         "maxLength": 80,
         "minLength": 1
        },
        "value": {
         "type": "string",
         "title": "Value",
         "maxLength": 120,
         "minLength": 1
        }
       },
       "additionalProperties": false
      },
      "title": "Attributes",
      "maxItems": 10,
      "minItems": 1
     },
     "product_name": {
      "type": "string",
      "title": "Product Name",
      "maxLength": 200,
      "minLength": 2
     }
    },
    "additionalProperties": false
   },
   "title": "Variants",
   "maxItems": 50,
   "minItems": 2
  },
  "marketplace": {
   "enum": [
    "amazon_us",
    "walmart_us",
    "shopify",
    "ebay_us"
   ],
   "type": "string",
   "title": "Marketplace"
  },
  "parent_label": {
   "type": "string",
   "title": "Parent Label",
   "maxLength": 200,
   "minLength": 2
  },
  "theme_attributes": {
   "type": "array",
   "items": {
    "type": "string",
    "maxLength": 80,
    "minLength": 1
   },
   "title": "Theme Attributes",
   "maxItems": 3,
   "minItems": 1
  }
 }
}
```

## 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-variation-family-plan-4ca15f81/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)