{"id":"6d9ece15-36d6-423b-ad3b-71d8b6f0e5bc","shortId":"6axyyZ","kind":"x402","title":"Retrieve top NFT collections on Base via x402 micropayment","tagline":"Retrieve top NFT collections on Base via x402 micropayment","description":"This x402-enabled endpoint returns data about top NFT collections on the Base blockchain. Operated by Erudite Intelligence LLC, it accepts a POST request with an optional collection address or slug and returns JSON intelligence about NFT collections. The endpoint is live and returns a standard x402 payment challenge.\n\nPayment is required per call: 10,000 base units of USDC on Base (eip155:8453) or 10,000 base units of USDT on Tron (tron:728126428). Since both USDC and USDT use 6 decimals, this equates to $0.01 (one cent) per request. The x402 facilitator is Coinbase CDP for the Base payment option. Settlement is handled through the EruditePay Bridge, which supports 20 blockchains and charges 0.5% per settlement.\n\nDocumentation is sparse — the endpoint description is simply \"Crypto data intelligence\" and the example output is a generic `{\"success\": true, \"data\": {}}` stub. The input schema accepts a `collection` field (string: NFT collection address or slug) in a JSON POST body, but the exact response structure for top collections data is not documented. No dedicated docs page exists (the /docs path returns a 404). Users should expect NFT collection ranking or analytics data for the Base chain, but the precise fields returned are unknown without making a paid call.","tags":[],"capabilities":["nft-top-collections","base-chain-data","x402-payment","usdc-payment","usdt-tron-payment","crypto-data-intelligence","json-api"],"categories":["crypto","nft","data"],"synonyms":["NFT rankings","top NFT collections Base","NFT analytics","NFT collection data","crypto intelligence","Base NFT marketplace data","NFT leaderboard"],"warnings":["No dedicated documentation available — /docs returns 404","Response schema is a generic stub ({\"success\": true, \"data\": {}}) with no field descriptions","Exact output fields for top collections data are undocumented","The endpoint description is vague: 'Crypto data intelligence'"],"endpointUrl":"https://bridge.eruditepay.com/v1/base/nft/top-collections","protocol":"x402","transport":"http","auth":{"type":"x402","details":[{"asset":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","extra":{"name":"USD Coin","version":"2"},"payTo":"0x6961b88476a9b89C4ed97A4aF4D190754d5e70A1","amount":"3000","scheme":"exact","network":"eip155:8453","maxTimeoutSeconds":300}]},"qualityScore":"0.400","qualityRationale":"The endpoint is live (402 challenge captured) with a valid schema and payment info, but documentation is extremely thin. The response structure is a generic stub, no dedicated docs exist, and the actual data fields returned are unknown. Pricing is clear at 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'0.01':106 '0.5':135 '000':75,86 '10':74,85 '20':131 '404':200 '6':101 '728126428':94 '8453':83 'Base NFT marketplace data' 'NFT analytics' 'NFT collection data' 'NFT leaderboard' 'NFT rankings' 'accept':40,163 'address':48,170 'analyt':208 'base':6,15,32,76,81,87,119,212 'base-chain-data' 'blockchain':33,132 'bodi':177 'bridg':128 'call':73,225 'cdp':116 'cent':108 'chain':213 'challeng':68 'charg':134 'coinbas':115 'collect':4,13,29,47,57,165,169,185,205 'crypto':146 'crypto intelligence' 'crypto-data-intelligence' 'data':25,147,158,186,209 'decim':102 'dedic':191 'descript':143 'doc':192 'document':138,189 'eip155':82 'enabl':22 'endpoint':23,59,142 'equat':104 'erudit':36 'eruditepay':127 'exact':180 'exampl':151 'exist':194 'expect':203 'facilit':113 'field':166,217 'generic':155 'handl':124 'input':161 'intellig':37,54,148 'json':53,175 'json-api' 'live':61 'llc':38 'make':222 'micropay':9,18 'nft':3,12,28,56,168,204 'nft-top-collections' 'one':107 'oper':34 'option':46,121 'output':152 'page':193 'paid':224 'path':197 'payment':67,69,120 'per':72,109,136 'post':42,176 'precis':216 'rank':206 'request':43,110 'requir':71 'respons':181 'retriev':1,10 'return':24,52,63,198,218 'schema':162 'settlement':122,137 'simpli':145 'sinc':95 'slug':50,172 'spars':140 'standard':65 'string':167 'structur':182 'stub':159 'success':156 'support':130 'top':2,11,27,184 'top NFT collections Base' 'tron':92,93 'true':157 'unit':77,88 'unknown':220 'usdc':79,97 'usdc-payment' 'usdt':90,99 'usdt-tron-payment' 'use':100 'user':201 'via':7,16 'without':221 'x402':8,17,21,66,112 'x402-enabled':20 'x402-payment'","prices":[{"id":"f4c2567b-6d29-42ad-98cc-bc0d05a41795","listingId":"6d9ece15-36d6-423b-ad3b-71d8b6f0e5bc","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":"3000","scheme":"exact","network":"eip155:8453","maxTimeoutSeconds":300}],"asset_contract":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","max_timeout_seconds":300},"createdAt":"2026-04-21T18:32:35.617Z"}],"sources":[{"listingId":"6d9ece15-36d6-423b-ad3b-71d8b6f0e5bc","source":"x402_bazaar","sourceId":"https://bridge.eruditepay.com/v1/base/nft/top-collections","sourceUrl":"https://api.cdp.coinbase.com/platform/v2/x402/discovery/resources","isPrimary":true,"firstSeenAt":"2026-04-21T18:32:35.617Z","lastSeenAt":"2026-04-22T05:32:27.585Z"}],"details":{"listingId":"6d9ece15-36d6-423b-ad3b-71d8b6f0e5bc","quickStartSnippet":"curl -X POST https://bridge.eruditepay.com/v1/base/nft/top-collections \\\n  -H \"Content-Type: application/json\" \\\n  -H \"X-PAYMENT: <x402_payment_header>\" \\\n  -d '{\"collection\": \"0x0000000000000000000000000000000000000000\"}'","exampleRequest":{"collection":"0x0000000000000000000000000000000000000000"},"exampleResponse":{"data":{},"success":true},"schema":null,"openapiUrl":null,"agentsTxtUrl":null,"citations":[{"claim":"Endpoint returns x402 v2 challenge with USDC on Base (10000 base units) and USDT on Tron (10000 base units)","source_url":"https://bridge.eruditepay.com/v1/base/nft/top-collections"},{"claim":"Provider is Erudite Intelligence LLC, FinCEN MSB registered","source_url":"https://bridge.eruditepay.com"},{"claim":"EruditePay Bridge supports 20 blockchains and charges 0.5% per settlement","source_url":"https://bridge.eruditepay.com"},{"claim":"Coinbase CDP is the facilitator for the Base payment option","source_url":"https://bridge.eruditepay.com/v1/base/nft/top-collections"}],"useCases":["Fetching top-performing NFT collections on Base for portfolio dashboards","Integrating NFT collection rankings into trading bots or analytics tools","Building NFT discovery interfaces that surface trending collections","Monitoring NFT market trends on Base programmatically"],"bestFor":["Developers building NFT analytics dashboards on Base","Agents that need on-demand NFT collection rankings","Applications requiring pay-per-call crypto data without subscriptions"],"notFor":["Users needing free NFT data (every call costs $0.01)","Multi-chain NFT analytics across non-Base chains (endpoint is Base-specific)","Detailed per-token or per-wallet NFT data (endpoint focuses on collections)"],"kindDetails":{},"updatedAt":"2026-04-22T01:33:08.273Z"}}