{"id":"40a0857d-67ff-4a5a-89ae-37b1f18822d3","shortId":"Z75MJx","kind":"x402","title":"Whale wallet intelligence for any address and chain, paid per-call via x402 (USDC on Base or USDT on Tron).","tagline":"Whale wallet intelligence for any address and chain, paid per-call via x402 (USDC on Base or USDT on Tron).","description":"This endpoint from Erudite Intelligence LLC provides crypto data intelligence focused on whale wallets. You POST a wallet or contract address along with a chain identifier, and receive structured JSON data about that address. The endpoint is gated behind the x402 payment protocol (v2), meaning callers must attach a valid payment header to each request.\n\nPricing is 10,000 base units per call. On Base (eip155:8453) that's 10,000 / 10^6 = $0.01 in USDC; on Tron it's 10,000 / 10^6 = $0.01 in USDT. Payment is facilitated through the EruditePay Bridge, which supports Coinbase CDP verification on Base and direct Tron settlement. The facilitator charges a separate 0.5% settlement fee on top.\n\nThe response schema is minimal in the probe data — the example output is `{\"success\": true, \"data\": {}}` — so the exact fields returned for a real whale wallet lookup are not documented in the available material. The endpoint accepts POST requests with a JSON body containing `address` (wallet or contract address) and `chain` (blockchain network name). No OpenAPI spec or detailed documentation page was found; the docs URL returns a 404. Use this endpoint when you need on-demand whale wallet data and can pay per-call in stablecoin.","tags":[],"capabilities":["whale-wallet-lookup","crypto-address-intelligence","multi-chain-support","x402-payment-gated","per-call-micropayment","json-api"],"categories":["crypto","data-intelligence"],"synonyms":["whale wallet tracker","crypto whale monitor","large holder lookup","wallet intelligence API","on-chain whale data","blockchain address analysis","whale address lookup"],"warnings":["Output schema is a stub — the example response data field is an empty object, so actual response structure is unknown.","No OpenAPI specification or detailed documentation available (docs URL returns 404).","Exact fields and depth of whale wallet intelligence cannot be verified from available material."],"endpointUrl":"https://bridge.eruditepay.com/v1/base/whale/wallets","protocol":"x402","transport":"http","auth":{"type":"x402","details":[{"asset":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","extra":{"name":"USD Coin","version":"2"},"payTo":"0x6961b88476a9b89C4ed97A4aF4D190754d5e70A1","amount":"5000","scheme":"exact","network":"eip155:8453","maxTimeoutSeconds":300}]},"qualityScore":"0.450","qualityRationale":"The endpoint is live (402 challenge captured) with a clear payment scheme and input schema, but the output schema is essentially empty (example data is {}), no OpenAPI spec exists, and the docs URL returns 404. The actual data returned for a real call is 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'0.5':153 '000':101,113,124 '10':100,112,114,123,125 '404':226 '6':115,126 '8453':109 'accept':194 'address':6,27,63,76,202,206 'along':64 'attach':90 'avail':190 'base':17,38,102,107,143 'behind':81 'blockchain':209 'blockchain address analysis' 'bodi':200 'bridg':136 'call':12,33,105,244 'caller':88 'cdp':140 'chain':8,29,67,208 'charg':150 'coinbas':139 'contain':201 'contract':62,205 'crypto':50 'crypto whale monitor' 'crypto-address-intelligence' 'data':51,73,166,173,238 'demand':235 'detail':216 'direct':145 'doc':222 'document':187,217 'eip155':108 'endpoint':44,78,193,229 'erudit':46 'eruditepay':135 'exact':176 'exampl':168 'facilit':132,149 'fee':155 'field':177 'focus':53 'found':220 'gate':80 'header':94 'identifi':68 'intellig':3,24,47,52 'json':72,199 'json-api' 'large holder lookup' 'llc':48 'lookup':184 'materi':191 'mean':87 'minim':162 'multi-chain-support' 'must':89 'name':211 'need':232 'network':210 'on-chain whale data' 'on-demand':233 'openapi':213 'output':169 'page':218 'paid':9,30 'pay':241 'payment':84,93,130 'per':11,32,104,243 'per-cal':10,31,242 'per-call-micropayment' 'post':58,195 'price':98 'probe':165 'protocol':85 'provid':49 'real':181 'receiv':70 'request':97,196 'respons':159 'return':178,224 'schema':160 'separ':152 'settlement':147,154 'spec':214 'stablecoin':246 'structur':71 'success':171 'support':138 'top':157 'tron':21,42,120,146 'true':172 'unit':103 'url':223 'usdc':15,36,118 'usdt':19,40,129 'use':227 'v2':86 'valid':92 'verif':141 'via':13,34 'wallet':2,23,56,60,183,203,237 'wallet intelligence API' 'whale':1,22,55,182,236 'whale address lookup' 'whale wallet tracker' 'whale-wallet-lookup' 'x402':14,35,83 'x402-payment-gated'","prices":[{"id":"46dc9f66-a288-44c8-87d6-24d24f3f212f","listingId":"40a0857d-67ff-4a5a-89ae-37b1f18822d3","amountUsd":null,"unit":"per_call","nativeCurrency":"USD COIN","nativeAmount":null,"chain":"base","payTo":"0x6961b88476a9b89C4ed97A4aF4D190754d5e70A1","paymentMethod":"x402-usd coin","isPrimary":true,"details":{"scheme":"exact","accepts_all":[{"asset":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","extra":{"name":"USD Coin","version":"2"},"payTo":"0x6961b88476a9b89C4ed97A4aF4D190754d5e70A1","amount":"5000","scheme":"exact","network":"eip155:8453","maxTimeoutSeconds":300}],"asset_contract":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","max_timeout_seconds":300},"createdAt":"2026-04-21T18:32:36.336Z"}],"sources":[{"listingId":"40a0857d-67ff-4a5a-89ae-37b1f18822d3","source":"x402_bazaar","sourceId":"https://bridge.eruditepay.com/v1/base/whale/wallets","sourceUrl":"https://api.cdp.coinbase.com/platform/v2/x402/discovery/resources","isPrimary":true,"firstSeenAt":"2026-04-21T18:32:36.336Z","lastSeenAt":"2026-04-22T11:33:20.297Z"}],"details":{"listingId":"40a0857d-67ff-4a5a-89ae-37b1f18822d3","quickStartSnippet":"curl -X POST https://bridge.eruditepay.com/v1/base/whale/wallets \\\n  -H \"Content-Type: application/json\" \\\n  -H \"X-PAYMENT: <x402_payment_header>\" \\\n  -d '{\"address\": \"0xAb5801a7D398351b8bE11C439e05C5B3259aeC9B\", \"chain\": \"base\"}'","exampleRequest":{"chain":"base","address":"0xAb5801a7D398351b8bE11C439e05C5B3259aeC9B"},"exampleResponse":{"data":{},"success":true},"schema":null,"openapiUrl":null,"agentsTxtUrl":null,"citations":[{"claim":"Endpoint returns x402 v2 challenge with USDC on Base and USDT on Tron payment options, amount 10000 base units each","source_url":"https://bridge.eruditepay.com/v1/base/whale/wallets"},{"claim":"Provider is Erudite Intelligence LLC, description is 'Crypto data intelligence'","source_url":"https://bridge.eruditepay.com/v1/base/whale/wallets"},{"claim":"EruditePay Bridge is a FinCEN MSB registered x402 facilitator supporting 20 blockchains with 0.5% settlement fee","source_url":"https://bridge.eruditepay.com"},{"claim":"USDC on Base uses 6 decimals (asset 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913)","source_url":"https://bridge.eruditepay.com"}],"useCases":["Look up whale wallet activity for a given address and chain","Monitor large-holder wallets as part of a trading or analytics pipeline","Enrich on-chain address data with whale classification intelligence","Agent-driven portfolio analysis that needs whale-level wallet context"],"bestFor":["Agents or bots that need per-call whale wallet data without subscriptions","Crypto analytics pipelines requiring programmatic address lookups","Developers building on x402-compatible payment infrastructure"],"notFor":["Bulk historical blockchain data exports (no batch endpoint documented)","Users who cannot pay in USDC on Base or USDT on Tron","Applications needing fully documented, schema-rich API responses (output schema is sparse)"],"kindDetails":{},"updatedAt":"2026-04-22T01:55:42.666Z"}}