{"uid":"cap_hsnA1RfCB3A6cHw_9PbSd","slug":"card-hedge-prices-by-grader-certificate-e72e7a95","name":"Card Hedge - Prices by Grader Certificate","description":"Get card information and pricing by grader certificate number.","url":"https://api.cardhedger.com/v1/agent/cards/prices-by-cert?utm_source=zero.xyz","method":"POST","headers":{},"bodySchema":{"type":"object","properties":{"cert":{"type":"string","description":"Certificate number to lookup"},"days":{"type":"integer","default":180,"maximum":365,"minimum":1,"description":"Number of days of price history to retrieve (1-365, defaults to 180)"},"grader":{"type":"string","default":"PSA","description":"Grading company (defaults to PSA)"}}},"responseSchema":null,"example":null,"exampleRequest":null,"tags":["x402"],"displayCostAmount":"0.01","displayCostAsset":"USDC","priceDynamic":false,"priceHint":null,"priceStatus":"priced","priceSource":"probe","requiresHandshake":false,"reviewCount":0,"rating":{"score":"0.00","successRate":"0.00","reviews":0,"stars":null,"state":"unrated"},"availabilityStatus":"unknown","priceObserved":null,"sessionDeposit":null,"pricing":{"kind":"static","summary":"$0.01/call","primary":{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.01","per":"call","confidence":"exact"},"accepted":[{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.01","per":"call","confidence":"exact"}]},"paymentMethods":[{"uid":"pm__96QHHHGPKpu1eSLhV-bF","protocol":"x402","methodType":"crypto","chain":"base","mode":"charge","costAmount":"0.01","costPer":"request","priority":0,"asset":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","unit":"request","depositMicros":null,"planRef":null}],"brandName":null,"brandSlug":null,"brandBaseUrl":null,"brandDocsUrl":null,"whatItDoes":"Looks up trading card information and historical sale pricing by a grader certificate number (e.g. PSA cert).","exampleAgentPrompt":"Can you look up the card info and last 90 days of sale prices for PSA certificate number 12345678?","exampleUseCases":[{"title":"Valuing a card before selling","prompt":"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?"},{"title":"Verifying a card purchase price","prompt":"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?"},{"title":"Tracking BGS card market trends","prompt":"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."}],"resultDescription":"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.","failureModes":["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"],"whenToPreferThis":"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.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-10-27T12:37:51.434Z","isFirstParty":false,"canonicalSlug":"card-hedge-prices-by-grader-certificate-e72e7a95"}