# ASIN402 Seller Info & Storefront API

> ASIN402 Seller Info & Storefront API is a paid API for AI agents from asin402.com, paid per call via x402, $0.005/call, status unknown (last checked 2026-10-31).

Fetches Amazon seller profile data (name, ratings, FBA usage, history) for up to 100 sellers, with optional full storefront ASIN list

## Facts

- Endpoint: GET https://asin402.com/api/data/seller?utm_source=zero.xyz
- Price: $0.005/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-31
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/asin402-seller-info-storefront-api-3e26a70f
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_UQkCQq0RuhhF6BgsnIjAn

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 asin402-seller-info-storefront-api-3e26a70f
```

Example prompt: Can you look up the Amazon seller A2L77EE7U53NWQ on the US marketplace — I need their seller name, ratings, and whether they use FBA?

## When to prefer this

Use this endpoint when you need structured seller profile data from Amazon — especially FBA status, seller ratings, or a complete product catalog for one or more sellers. Ideal for competitive research, supplier vetting, or marketplace intelligence. Prefer this over product-level endpoints when the subject of interest is the seller entity rather than a specific ASIN. The batch capability (up to 100 sellers per call) makes it efficient for bulk seller screening.

## Known failure modes

- Invalid or non-existent seller ID returns empty or missing seller entry
- Storefront requested for multiple sellers (only one allowed) — returns error
- Unsupported marketplace domain code returns error or defaults to US
- Rate limiting or credit exhaustion returns 402 or error response
- Seller has no ratings history — fields may be empty or null

## How this service works

Amazon seller information and storefront. Seller name, ratings, FBA usage and history for up to 100 sellers; optionally the seller's full storefront ASIN list. 1 credit per seller; storefront +9.

## Output

A JSON object containing a sellers map keyed by seller ID, each with sellerName, sellerId, and hasFBA (boolean). Also includes _meta fields: cached status, price paid, and marketplace_domain_id. If storefront=1 is requested, the seller's full ASIN list (up to 100,000 ASINs) is included.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "$schema": "https://json-schema.org/draft/2020-12/schema",
 "required": [
  "input"
 ],
 "properties": {
  "input": {
   "type": "object",
   "required": [
    "type",
    "method"
   ],
   "properties": {
    "type": {
     "type": "string",
     "const": "http"
    },
    "method": {
     "enum": [
      "GET"
     ],
     "type": "string"
    },
    "queryParams": {
     "type": "object",
     "required": [
      "seller"
     ],
     "properties": {
      "domain": {
       "type": "string",
       "description": "Amazon marketplace: us, uk, de, fr, jp, ca, it, es, in, mx, br. Default us."
      },
      "seller": {
       "type": "string",
       "description": "Seller ID, or comma-separated list of up to 100 (storefront allows only one)."
      },
      "storefront": {
       "enum": [
        0,
        1
       ],
       "type": "integer",
       "description": "1 = include the seller's ASIN list (up to 100,000). +9 credits."
      }
     }
    }
   },
   "additionalProperties": false
  },
  "output": {
   "type": "object",
   "required": [
    "type"
   ],
   "properties": {
    "type": {
     "type": "string"
    },
    "example": {
     "type": "object",
     "properties": {
      "_meta": {
       "type": "object",
       "properties": {
        "cached": {
         "type": "boolean"
        },
        "price_paid": {
         "type": "string"
        },
        "marketplace_domain_id": {
         "type": "integer"
        }
       }
      },
      "sellers": {
       "type": "object",
       "properties": {
        "A2L77EE7U53NWQ": {
         "type": "object",
         "properties": {
          "hasFBA": {
           "type": "boolean"
          },
          "sellerId": {
           "type": "string"
          },
          "sellerName": {
           "type": "string"
          }
         }
        }
       }
      }
     }
    }
   }
  }
 }
}
```

## Response schema (JSON Schema)

```json
{
 "type": "json",
 "example": {
  "_meta": {
   "cached": false,
   "price_paid": "$0.005",
   "marketplace_domain_id": 1
  },
  "sellers": {
   "A2L77EE7U53NWQ": {
    "hasFBA": true,
    "sellerId": "A2L77EE7U53NWQ",
    "sellerName": "Sample Seller"
   }
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/asin402-seller-info-storefront-api-3e26a70f/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from asin402.com](https://www.zero.xyz/host/asin402.com/llms.txt)