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ASIN402 Sell Score
x402
ASIN402 Sell Score is a paid API for AI agents from asin402.com, paid per call via x402, $0.1/call, status unknown (last checked 2026-10-31).
Scores an Amazon ASIN 0-100 for selling viability based on demand, competition, price stability, review moat, and Amazon seller presence
Price / call$0.1
Success—
StatusUnknown
How this service works
Amazon product research: opportunity score 0-100. Is this product worth selling on Amazon? Scores an ASIN 0-100 from estimated monthly sales (demand), seller competition, whether Amazon sells it, price stability (price wars), review moat and price fit, with plain-language risk flags. For FBA product research, wholesale and arbitrage sourcing. Free sample: /api/sample/sell-score
Output
Returns a JSON object with: an overall opportunity score (0-100) and plain-language rating (e.g. 'strong'), six component scores (demand, competition, price_fit, review_moat, amazon_penalty, price_stability), key marketplace signals (estimated monthly sales, sales rank, review count, current price, 90-day average price, Amazon-as-seller flag, out-of-stock percentage), an array of plain-language risk flags, the marketplace queried, and a data timestamp.
Example use cases
FBA product research for new seller
“I'm thinking about selling ASIN 0735211299 on Amazon FBA in the US — can you give me its sell score, estimated monthly sales, competition level, and any red flags I should know about?”
Arbitrage sourcing quick check
“I found ASIN B07XJ8C8F5 at a discount locally — score it on the UK Amazon marketplace for me so I can see the demand, price stability, and whether Amazon itself is a competitor before I buy inventory.”
Wholesale catalog vetting
“We're evaluating ASIN B09G9FPHY6 for a wholesale deal on the German Amazon marketplace — pull the sell score with the full component breakdown including review moat and price war risk so we can decide if it's worth pursuing.”
Technical details
Endpoint
GEThttps://asin402.com/api/sell-score?utm_source=zero.xyzWhen to prefer
Use this endpoint when you need a fast, single-number viability verdict on a specific Amazon ASIN for FBA, wholesale, or arbitrage decisions. It aggregates multiple competitive signals (demand, competition, price stability, review moat, Amazon presence) into one actionable score with plain-language risk flags, which is far more efficient than querying each signal separately. Prefer this over raw price-history or rank endpoints when the core question is 'should I sell this product?' rather than deep historical analysis.
Side effects
- Invalid or malformed ASIN (not 10 characters) returns an error
- ASIN not found in the specified marketplace returns no data or error
- Unsupported marketplace domain returns an error
- Insufficient historical data for some signals may result in null component scores
- Payment not processed (402) blocks the response
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| inputrequired | object | |
| output | object |
Output
Schema · Response
{
"type": "json",
"example": {
"asin": "0735211299",
"flags": [],
"score": 72,
"title": "Atomic Habits: An Easy & Proven Way to Build Good Habits & Break Bad Ones",
"rating": "strong",
"signals": {
"rating": 4.6,
"avg_90d": 28.99,
"new_offers": 7,
"sales_rank": 4210,
"review_count": 3840,
"current_price": 24.99,
"amazon_is_seller": false,
"out_of_stock_pct_90d": 4,
"estimated_monthly_sales": 600
},
"components": {
"demand": 93,
"price_fit": 90,
"competition": 58,
"review_moat": 10,
"amazon_penalty": 0,
"price_stability": 86
},
"data_as_of": "2026-10-26T18:40:00.000Z",
"disclaimer": "Heuristic score from historical marketplace data. Not financial advice.",
"marketplace": "us"
}
}Tags
x402
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