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Card Hedge - Prices by Grader Certificate
x402
Card Hedge - Prices by Grader Certificate is a paid API for AI agents from api.cardhedger.com, paid per call via x402, $0.01/call, status unknown (last checked 2026-10-27).
Looks up trading card information and historical sale pricing by a grader certificate number (e.g. PSA cert).
Price / call$0.01
Success—
StatusUnknown
How this service works
Get card information and pricing by grader certificate number.
Output
Returns card identification details (name, year, grade, set, etc.) and historical sale price data for the specified certificate number over the requested time window, drawn from the specified grading company's records.
Example use cases
Valuing a card before selling
“I'm thinking of selling my PSA graded card with cert number 87654321 — can you pull up the recent sale prices for the last 6 months so I know what to list it for?”
Verifying a card purchase price
“I just saw a PSA cert 11223344 listed for $500 — can you check what it's actually been selling for in the last 60 days to see if that's a fair price?”
Tracking BGS card market trends
“Can you get me the pricing history for the past year on BGS certificate number 55667788? I want to see how the market has moved.”
Technical details
Endpoint
POSThttps://api.cardhedger.com/v1/agent/cards/prices-by-cert?utm_source=zero.xyzWhen to prefer
Use this endpoint when you have a specific grader certificate number and need to retrieve verified card identity and pricing history directly tied to that certified copy. It is more precise than keyword-based card searches because it identifies the exact graded card instance, not just a card title or set.
Side effects
- Certificate number not found — grader does not have a record for that cert
- Invalid grader name — only supported grading companies accepted
- Days parameter out of range (must be 1–365)
- No sales data available for the certificate in the requested time window
- API authentication or payment failure
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| cert | string | Certificate number to lookup |
| days | integer | Number of days of price history to retrieve (1-365, defaults to 180) |
| grader | string | Grading company (defaults to PSA) |
Tags
x402
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