SentientData Market Scan

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.

{
  "type": "object",
  "properties": {
    "query": {
      "type": "string",
      "description": "Product to scan, e.g. '4L60E transmission' or 'PSA 10 Charizard'"
    },
    "buying_option": {
      "type": "string",
      "enum": [
        "AUCTION",
        "FIXED_PRICE"
      ],
      "description": "Default AUCTION"
    },
    "min_discount_pct": {
      "type": "number",
      "description": "Minimum percent under market median, default 30"
    },
    "min_price": {
      "type": "number",
      "description": "Ignore listings under this USD price, default 25"
    },
    "ending_within_hours": {
      "type": "number",
      "description": "AUCTION mode only, default 24"
    },
    "limit": {
      "type": "number",
      "description": "Max results, default 10, max 25"
    }
  },
  "required": [
    "query"
  ]
}

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'.

{
  "type": "object",
  "properties": {
    "query": {
      "type": "string",
      "description": "Product to price"
    },
    "min_price": {
      "type": "number",
      "description": "Floor to exclude junk/parts listings, default 25"
    }
  },
  "required": [
    "query"
  ]
}

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.

{
  "type": "object",
  "properties": {
    "query": {
      "type": "string",
      "description": "Product to evaluate"
    },
    "buy_price": {
      "type": "number",
      "description": "Your acquisition price in USD"
    },
    "fee_pct": {
      "type": "number",
      "description": "Marketplace fee percent, default 13.25"
    },
    "shipping_cost": {
      "type": "number",
      "description": "Estimated outbound shipping USD, default 0"
    }
  },
  "required": [
    "query",
    "buy_price"
  ]
}

The current pre-scored steal list across tracked lanes (watches, sneakers, bags, jewelry, beauty, cards, coins, guitars, lego, golf, autoparts, tools): live auctions at least 45% under market plus mispriced Buy It Now listings, refreshed every 30 minutes. Fast cached read.

{
  "type": "object",
  "properties": {
    "lane": {
      "type": "string",
      "description": "Optional lane slug to filter"
    }
  }
}