{"id":"0bf0a2f4-10b9-4d11-846d-b67557949007","shortId":"zdE8Fg","kind":"x402","title":"Query NFT transfer data on Base via x402-paid POST endpoint","tagline":"Query NFT transfer data on Base via x402-paid POST endpoint","description":"This endpoint at bridge.eruditepay.com provides NFT transfer intelligence on the Base blockchain. It accepts a POST request with a transaction hash and/or NFT collection address and returns structured transfer data. Payment is handled via the x402 protocol: callers must pay $0.01 per request in USDC on Base (eip155:8453) or USDT on Tron (tron:728126428).\n\nThe endpoint is operated by Erudite Intelligence LLC, which also runs the EruditePay x402 Bridge — a payment facilitator supporting 20 blockchains. The Bridge itself handles verify/settle steps for x402 payments. This particular endpoint is a data endpoint (not the facilitator itself) described as \"Crypto data intelligence\" in the x402 challenge. The input schema requires a JSON body with `hash` (transaction hash) and `collection` (NFT collection address or slug). The output returns a JSON object with a `success` boolean and a `data` object, though the exact shape of the data payload is not documented beyond the example stub.\n\nDocumentation is sparse — the provider's /docs path returns a 404, and no OpenAPI spec is available. The endpoint is live and returns a well-formed x402 v2 challenge on unauthenticated POST requests. The facilitator for payment settlement is Coinbase CDP (api.cdp.coinbase.com).","tags":[],"capabilities":["nft-transfers","base-chain","x402-payment","transaction-lookup","collection-lookup","usdc-payment","tron-usdt-payment"],"categories":["blockchain","nft","data"],"synonyms":["NFT transfer history","NFT transaction data","Base NFT transfers","ERC-721 transfers","NFT collection transfers","crypto data intelligence","on-chain NFT data"],"warnings":["No OpenAPI or detailed API documentation available — /docs returns 404","Output schema example is a stub ({\"success\": true, \"data\": {}}) with no detail on actual transfer data fields","The endpoint description is generic ('Crypto data intelligence') and does not specifically confirm NFT transfer functionality beyond the URL path","Tron payment option uses asset address TR7NHqjeKQxGTCi8q8ZY4pL8otSzgjLj6t (USDT) — callers should verify chain compatibility"],"endpointUrl":"https://bridge.eruditepay.com/v1/base/nft/transfers","protocol":"x402","transport":"http","auth":{"type":"x402","details":[{"asset":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","extra":{"name":"USD Coin","version":"2"},"payTo":"0x24c5da6267AEbEBfCBf7B325753C5B2538A5B09B","amount":"3000","scheme":"exact","network":"eip155:8453","maxTimeoutSeconds":300},{"asset":"TR7NHqjeKQxGTCi8q8ZY4pL8otSzgjLj6t","extra":{"name":"TronTransferAuthorization","version":"1","wrapper":"THGkLBrLY1G5VovZjjK1jP9upyxRdMNL3b"},"payTo":"TSevuRZFjpckeMSSDhQFoiAkPCkckuE5TP","amount":"3000","scheme":"exact","network":"tron:728126428","maxTimeoutSeconds":300}]},"qualityScore":"0.450","qualityRationale":"The endpoint is live with a valid x402 v2 challenge and includes a basic input/output schema via the Bazaar extension. However, documentation is effectively absent (no OpenAPI spec, /docs returns 404), the output data shape is a stub with an empty object, and there are no real response examples showing what NFT transfer data actually looks 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'0.01':65 '20':99 '404':187 '728126428':79 '8453':73 'Base NFT transfers' 'ERC-721 transfers' 'NFT collection transfers' 'NFT transaction data' 'NFT transfer history' 'accept':38 'address':49,145 'also':89 'and/or':46 'api.cdp.coinbase.com':219 'avail':193 'base':6,18,35,71 'base-chain' 'beyond':173 'blockchain':36,100 'bodi':136 'boolean':157 'bridg':94,102 'bridge.eruditepay.com':28 'caller':62 'cdp':218 'challeng':129,206 'coinbas':217 'collect':48,142,144 'collection-lookup' 'crypto':123 'crypto data intelligence' 'data':4,16,54,115,124,160,168 'describ':121 'document':172,177 'eip155':72 'endpoint':12,24,26,81,112,116,195 'erudit':85 'eruditepay':92 'exact':164 'exampl':175 'facilit':97,119,212 'form':203 'handl':57,104 'hash':45,138,140 'input':131 'intellig':32,86,125 'json':135,152 'live':197 'llc':87 'must':63 'nft':2,14,30,47,143 'nft-transfers' 'object':153,161 'on-chain NFT data' 'openapi':190 'oper':83 'output':149 'paid':10,22 'particular':111 'path':184 'pay':64 'payload':169 'payment':55,96,109,214 'per':66 'post':11,23,40,209 'protocol':61 'provid':29,181 'queri':1,13 'request':41,67,210 'requir':133 'return':51,150,185,199 'run':90 'schema':132 'settlement':215 'shape':165 'slug':147 'spars':179 'spec':191 'step':106 'structur':52 'stub':176 'success':156 'support':98 'though':162 'transact':44,139 'transaction-lookup' 'transfer':3,15,31,53 'tron':77,78 'tron-usdt-payment' 'unauthent':208 'usdc':69 'usdc-payment' 'usdt':75 'v2':205 'verify/settle':105 'via':7,19,58 'well':202 'well-form':201 'x402':9,21,60,93,108,128,204 'x402-paid':8,20 'x402-payment'","prices":[{"id":"f7dff8b0-c51c-4334-8089-5016b496575d","listingId":"0bf0a2f4-10b9-4d11-846d-b67557949007","amountUsd":null,"unit":"per_call","nativeCurrency":"USD COIN","nativeAmount":null,"chain":"base","payTo":"0x24c5da6267AEbEBfCBf7B325753C5B2538A5B09B","paymentMethod":"x402-usd coin","isPrimary":true,"details":{"scheme":"exact","accepts_all":[{"asset":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","extra":{"name":"USD Coin","version":"2"},"payTo":"0x24c5da6267AEbEBfCBf7B325753C5B2538A5B09B","amount":"3000","scheme":"exact","network":"eip155:8453","maxTimeoutSeconds":300},{"asset":"TR7NHqjeKQxGTCi8q8ZY4pL8otSzgjLj6t","extra":{"name":"TronTransferAuthorization","version":"1","wrapper":"THGkLBrLY1G5VovZjjK1jP9upyxRdMNL3b"},"payTo":"TSevuRZFjpckeMSSDhQFoiAkPCkckuE5TP","amount":"3000","scheme":"exact","network":"tron:728126428","maxTimeoutSeconds":300}],"asset_contract":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","max_timeout_seconds":300},"createdAt":"2026-04-21T18:32:37.265Z"}],"sources":[{"listingId":"0bf0a2f4-10b9-4d11-846d-b67557949007","source":"x402_bazaar","sourceId":"https://bridge.eruditepay.com/v1/base/nft/transfers","sourceUrl":"https://api.cdp.coinbase.com/platform/v2/x402/discovery/resources","isPrimary":true,"firstSeenAt":"2026-04-21T18:32:37.265Z","lastSeenAt":"2026-04-22T05:32:29.478Z"}],"details":{"listingId":"0bf0a2f4-10b9-4d11-846d-b67557949007","quickStartSnippet":"curl -X POST https://bridge.eruditepay.com/v1/base/nft/transfers \\\n  -H \"Content-Type: application/json\" \\\n  -H \"X-PAYMENT: <x402-payment-header>\" \\\n  -d '{\"hash\": \"0xabc...123\", \"collection\": \"0xdef...456\"}'","exampleRequest":{"hash":"0x0000000000000000000000000000000000000000000000000000000000000000","collection":"0x0000000000000000000000000000000000000000"},"exampleResponse":{"data":{},"success":true},"schema":null,"openapiUrl":null,"agentsTxtUrl":null,"citations":[{"claim":"Endpoint returns x402 v2 challenge with $0.01 USDC on Base and $0.01 USDT on Tron","source_url":"https://bridge.eruditepay.com/v1/base/nft/transfers"},{"claim":"Operated by Erudite Intelligence LLC, FinCEN MSB registered","source_url":"https://bridge.eruditepay.com"},{"claim":"Payment facilitator is Coinbase CDP at api.cdp.coinbase.com/platform/v2/x402","source_url":"https://bridge.eruditepay.com/v1/base/nft/transfers"},{"claim":"Input schema accepts hash (transaction hash) and collection (NFT collection address or slug)","source_url":"https://bridge.eruditepay.com/v1/base/nft/transfers"},{"claim":"EruditePay Bridge supports 20 blockchains with 0.5% per settlement fee","source_url":"https://bridge.eruditepay.com"}],"useCases":["Retrieve NFT transfer records for a specific transaction hash on Base","Look up transfer activity for an NFT collection by contract address","Enrich blockchain analytics pipelines with NFT movement data","Verify NFT provenance by tracing transfer history"],"bestFor":["Agents needing on-demand NFT transfer data on Base","Blockchain analytics tools requiring per-call paid data access","Applications tracking NFT collection activity programmatically"],"notFor":["Querying NFT data on chains other than Base (endpoint is Base-specific)","Free or high-volume bulk data extraction (each call costs $0.01)","Getting full NFT metadata or images (this is transfer data only)"],"kindDetails":{},"updatedAt":"2026-04-22T02:09:51.058Z"}}