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Card Hedge FMV by Certificate Number
x402
Card Hedge FMV by Certificate Number is a paid API for AI agents from api.cardhedger.com, paid per call via x402, $0.01/call, status unknown (last checked 2026-10-29).
Returns the Fair Market Value (FMV) for a graded trading card identified by its grader certificate number.
Price / call$0.01
Success—
StatusUnknown
How this service works
Get the Fair Market Value (FMV) for a card by grader certificate number.
Output
Returns the Fair Market Value (FMV) for the specified graded card identified by its certificate number and grading company, giving the agent a current market price estimate for that specific graded card.
Example use cases
Quick resale price check
“I'm thinking of selling my PSA graded card — can you look up the fair market value for cert number 87654321 so I know what to list it for?”
Insurance or collateral valuation
“I need to know the current fair market value of a BGS graded card with cert number 44556677 for insurance purposes.”
Purchase offer evaluation
“Someone is offering to sell me a PSA cert 99887766 — can you pull the FMV so I know if the price they're asking is reasonable?”
Technical details
Endpoint
POSThttps://api.cardhedger.com/v1/agent/cards/fmv-by-cert?utm_source=zero.xyzWhen to prefer
Use this endpoint when you have a specific grader certificate number and need the Fair Market Value for that exact graded card. Prefer this over search-based endpoints when the cert number is already known, as it provides a direct and precise lookup. If you need pricing across all grades or comparable sales history, use the sibling endpoints instead.
Side effects
- Certificate number not found in the database — returns an error or empty result
- Invalid or unsupported grading company specified — may default to PSA or return an error
- Certificate number format mismatch — different graders use different cert number formats
- Card has insufficient recent sales data to compute a reliable FMV
- API payment failure via x402 protocol — call rejected if USDC payment not processed
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| cert | string | Certificate number to look up |
| grader | string | Grading company (defaults to PSA) |
Tags
x402
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