# Card Comps — Sports Card Market Research

> Card Comps — Sports Card Market Research 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 comps (recent sale prices and medians) for a given player or card name

## Facts

- Endpoint: GET https://eager-marvel-a2g2.here.now/comps
- Price: $0.01/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-14
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/card-comps-sports-card-market-research-768c0876
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_CwIYjQGxwCGKym-tfFsIG

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 card-comps-sports-card-market-research-768c0876
```

Example prompt: Can you pull up the sports card comps for Shohei Ohtani and show me the last raw sale price and median — I want to know what his cards are going for right now?

## When to prefer this

Use this endpoint when you need fast, pay-per-call sports card market comps without a subscription. It is ideal for agents that need on-demand price discovery for raw (ungraded) cards by player name. Prefer this over scraping auction sites or manual lookup when you need structured sale price data programmatically and want to pay only for what you use via USDC micropayments on Base.

## Known failure modes

- No matches found for obscure or misspelled player names
- Payment not processed — endpoint returns 402 if USDC micropayment fails
- limit parameter out of range (must be 1–25)
- Missing required query parameter q returns a validation error
- Network timeout for real-time market data lookups

## How this service works

A pay per call service providing sports card market research data on the Base network.

## Output

A JSON object containing the search query, a boolean confirming payment was processed, and a list of matching cards. Each match includes the card or player name, the most recent raw sale price (last_raw), and the median raw sale price (raw_median). Up to 25 results can be returned per query.

## 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": [
      "q"
     ],
     "properties": {
      "q": {
       "type": "string",
       "description": "Player or card name to search, e.g. Ohtani, Wembanyama, Mahomes"
      },
      "limit": {
       "type": "number",
       "description": "Max matches to return, 1-25. Default 12."
      }
     }
    }
   },
   "additionalProperties": false
  },
  "output": {
   "type": "object",
   "required": [
    "type"
   ],
   "properties": {
    "type": {
     "type": "string"
    },
    "example": {
     "type": "object"
    }
   }
  }
 }
}
```

## Response schema (JSON Schema)

```json
{
 "type": "json",
 "example": {
  "paid": true,
  "query": "Ohtani",
  "matches": [
   {
    "name": "Shohei Ohtani",
    "last_raw": 701,
    "raw_median": 831
   }
  ]
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/card-comps-sports-card-market-research-768c0876/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from eager-marvel-a2g2.here.now](https://www.zero.xyz/host/eager-marvel-a2g2.here.now/llms.txt)