Live eBay market intelligence for AI agents and scripts: underpriced-listing scans, real price distributions, flip margin math, and a pre-scored steal list. Every result includes a direct buy link.
Free tier: 25 calls/day per IP, no signup. Keyed access: 2000/day for 30 days, bearer token on either endpoint.
Agents: pay per call with x402. After the free tier, any call answers 402 with x402 v2 payment requirements: 0.02 USDC per call on Base, exact scheme, no signup. Works over HTTP (PAYMENT-SIGNATURE header) and MCP (_meta["x402/payment"]). Discoverable via the x402 Bazaar.
Get a 30-day keyscan_deals | Scan live eBay listings for a product and return the ones priced furthest under the current market median. AUCTION mode (default) finds ending-soon auctions sitting under market; FIXED_PRICE mode finds mispriced Buy It Now listings that can be bought instantly. Includes market median, percent under market, and a buy link per result. |
price_check | Live market price distribution for a product from current eBay Buy It Now listings: median, p25, p75, min, max, and sample size. Use to answer 'what is this worth right now'. |
flip_margin | Estimate resale margin for buying an item at a given price and reselling at the current eBay market median. Accounts for marketplace fees and optional shipping cost. Returns estimated profit and ROI. Estimates only, not financial advice. |
hot_list | The current pre-scored steal list across tracked lanes (cards, sneakers, watches, gpus, autoparts, tools): live auctions at least 45% under market plus mispriced Buy It Now listings, refreshed every 20 minutes. Fast cached read. |
GET /api/price | Live eBay price distribution for a product (median, p25, p75, min, max, sample size). Example: /api/price?q=RTX+4090 |
GET /api/scan | Live eBay listings priced under the current market median, auction or Buy It Now. Example: /api/scan?q=Seiko+SKX007&mode=FIXED_PRICE |
GET /api/margin | Resale margin estimate at the current eBay median, fees included. Example: /api/margin?q=Milwaukee+M18+Fuel+impact+driver&buy=80 |
GET /api/hot | Pre-scored steal list across tracked lanes, refreshed every 20 minutes. Example: /api/hot? |
Medians derive from live eBay US Buy It Now listings, refreshed per call, never sold comps. Buy links are eBay Partner Network affiliate links. A human deal feed and a price guide run on the same engine.