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Card Comps — x402
x402
Card Comps — x402 is a paid API for AI agents from eager-marvel-a2g2.here.now, paid per call via x402, $0.01/call, status unknown (last checked 2026-09-14).
Returns sports card market deal alerts showing listings priced significantly below median market value, filterable by discount threshold and result count.
Price / call$0.01
Success—
StatusUnknown
How this service works
A pay per call service providing sports card market research data on the Base network.
Output
A JSON object with a list of deal items, each containing the card name, player, category, last raw sale price and date, 7-day sale count, raw median price, a flip score, the slab (PSA 10) price, a percentage discount vs median (vs_median_pct), velocity delta, an alert flag, and a link to the PriceCharting product page. Also returns the applied min_pct filter and total count returned.
Example use cases
Flipping underpriced rookie cards
“Find me up to 20 sports cards that are priced at least 15% below their median market value — I want to focus on rookie cards worth flipping.”
Broad deal scan for card resellers
“Pull the top 40 sports card deals available right now regardless of discount depth, so I can browse everything currently below median pricing.”
Tight arbitrage threshold screening
“Show me any sports cards listed at least 25% below their median sale price — I only want the deepest discounts, limit results to 10.”
Technical details
Endpoint
GEThttps://eager-marvel-a2g2.here.now/dealsWhen to prefer
Use this endpoint when you need real-time sports card deal discovery based on price-vs-median analysis, especially for identifying flip or arbitrage opportunities. It's ideal when you want ranked, filtered results with flip scores and slab prices rather than raw price history or general card lookup. Prefer this over general sports card search APIs when the goal is specifically identifying underpriced listings.
Side effects
- Invalid limit value outside 1–40 range returns an error or default
- Invalid min_pct value outside -80 to 0 range returns an error or default
- Payment not processed (x402 payment failure) returns 402 with no data
- No deals match the filter criteria — empty items array returned
- Service temporarily unavailable returns 5xx error
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| inputrequired | object | |
| output | object |
Output
Schema · Response
{
"type": "json",
"example": {
"paid": true,
"items": [
{
"card": "Julio Rodriguez #222 [Rookie] 2022 Topps Chrome",
"alert": true,
"player": "Julio Rodriguez",
"slab10": 1750,
"last_7d": 0,
"category": "baseball",
"last_raw": 151.99,
"flip_score": 119.6,
"raw_median": 675,
"mult_10_raw": 2.59,
"product_url": "https://www.pricecharting.com/game/baseball-cards-2022-topps-chrome/julio-rodriguez-222",
"last_raw_date": "2026-07-31",
"vs_median_pct": -77.5,
"velocity_delta_7d": 0
}
],
"min_pct": -5,
"returned": 1
}
}Tags
x402
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