{"id":"3c12b7a6-d8fa-4ad2-bcb7-9cd48148961a","shortId":"tpcjaa","kind":"x402","title":"Retrieve top-gaining crypto tokens on Base via x402 micropayment","tagline":"Retrieve top-gaining crypto tokens on Base via x402 micropayment","description":"This x402-gated endpoint from Erudite Intelligence LLC returns data about the top-gaining cryptocurrency tokens. It accepts a POST request with a JSON body containing a token address (or symbol) and responds with market intelligence data. The endpoint is live and returns an x402 payment challenge, confirming it is operational.\n\nPayment is accepted in two ways: USDC on Base (network eip155:8453) or USDT on Tron (network tron:728126428), both at 10,000 base units per call — which equals $0.01 USD given 6-decimal stablecoins. The facilitator is Coinbase CDP's x402 infrastructure for the Base payment path. The provider, Erudite Intelligence LLC, also operates the EruditePay x402 Bridge facilitator service, which supports 20 blockchains and is registered as a FinCEN MSB (BSA ID 31000324258137).\n\nDocumentation is sparse. The endpoint description in the x402 challenge is simply \"Crypto data intelligence,\" and the example output schema shows only a generic `{\"success\": true, \"data\": {}}` stub. The input schema indicates a `token` field described as \"Token address or symbol,\" but it is unclear what specific data fields are returned for top gainers, what time windows are covered, or how many tokens are included in the response. No OpenAPI spec or dedicated docs page was found.","tags":[],"capabilities":["crypto-market-data","top-gainers","x402-payment","base-usdc","tron-usdt","token-lookup"],"categories":["crypto","market-data"],"synonyms":["top gainers","crypto gainers","token price movers","market movers","crypto market intelligence","token performance","price increase ranking"],"warnings":["No dedicated documentation found — /docs, /api, /pricing, /README all return 404-style errors","Output example is a generic stub ({\"success\": true, \"data\": {}}) with no actual field definitions","The 'token' input field purpose is ambiguous for a 'top-gainers' endpoint — unclear if it filters results or is optional","No OpenAPI or AI plugin manifest available"],"endpointUrl":"https://bridge.eruditepay.com/v1/base/market/top-gainers","protocol":"x402","transport":"http","auth":{"type":"x402","details":[{"asset":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","extra":{"name":"USD Coin","version":"2"},"payTo":"0x6961b88476a9b89C4ed97A4aF4D190754d5e70A1","amount":"1000","scheme":"exact","network":"eip155:8453","maxTimeoutSeconds":300}]},"qualityScore":"0.400","qualityRationale":"The endpoint is live (402 challenge captured) with clear pricing ($0.01/call in USDC or USDT), but documentation is essentially absent — no OpenAPI spec, no detailed output schema, and the example response is a generic stub. The input schema has only one field with a vague description. Significant inference is required about what the endpoint actually 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'000':98 '10':97 '20':139 '31000324258137':150 '6':108 '728126428':94 '8453':87 'accept':42,78 'address':53,189 'also':129 'base':8,19,84,99,121 'base-usdc' 'blockchain':140 'bodi':49 'bridg':134 'bsa':148 'call':102 'cdp':115 'challeng':71,160 'coinbas':114 'confirm':72 'contain':50 'cover':209 'crypto':5,16,163 'crypto gainers' 'crypto market intelligence' 'crypto-market-data' 'cryptocurr':39 'data':33,61,164,177,198 'decim':109 'dedic':223 'describ':186 'descript':156 'doc':224 'document':151 'eip155':86 'endpoint':27,63,155 'equal':104 'erudit':29,126 'eruditepay':132 'exampl':168 'facilit':112,135 'field':185,199 'fincen':146 'found':227 'gain':4,15,38 'gainer':204 'gate':26 'generic':174 'given':107 'id':149 'includ':215 'indic':182 'infrastructur':118 'input':180 'intellig':30,60,127,165 'json':48 'live':65 'llc':31,128 'mani':212 'market':59 'market movers' 'micropay':11,22 'msb':147 'network':85,92 'openapi':220 'oper':75,130 'output':169 'page':225 'path':123 'payment':70,76,122 'per':101 'post':44 'price increase ranking' 'provid':125 'regist':143 'request':45 'respond':57 'respons':218 'retriev':1,12 'return':32,67,201 'schema':170,181 'servic':136 'show':171 'simpli':162 'spars':153 'spec':221 'specif':197 'stablecoin':110 'stub':178 'success':175 'support':138 'symbol':55,191 'time':206 'token':6,17,40,52,184,188,213 'token performance' 'token price movers' 'token-lookup' 'top':3,14,37,203 'top gainers' 'top-gain':2,13,36 'top-gainers' 'tron':91,93 'tron-usdt' 'true':176 'two':80 'unclear':195 'unit':100 'usd':106 'usdc':82 'usdt':89 'via':9,20 'way':81 'window':207 'x402':10,21,25,69,117,133,159 'x402-gated':24 'x402-payment'","prices":[{"id":"656a75e3-a2bd-4472-88ae-4d4767826841","listingId":"3c12b7a6-d8fa-4ad2-bcb7-9cd48148961a","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":"1000","scheme":"exact","network":"eip155:8453","maxTimeoutSeconds":300}],"asset_contract":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","max_timeout_seconds":300},"createdAt":"2026-04-21T18:32:35.821Z"}],"sources":[{"listingId":"3c12b7a6-d8fa-4ad2-bcb7-9cd48148961a","source":"x402_bazaar","sourceId":"https://bridge.eruditepay.com/v1/base/market/top-gainers","sourceUrl":"https://api.cdp.coinbase.com/platform/v2/x402/discovery/resources","isPrimary":true,"firstSeenAt":"2026-04-21T18:32:35.821Z","lastSeenAt":"2026-04-22T05:32:27.807Z"}],"details":{"listingId":"3c12b7a6-d8fa-4ad2-bcb7-9cd48148961a","quickStartSnippet":"curl -X POST https://bridge.eruditepay.com/v1/base/market/top-gainers \\\n  -H \"Content-Type: application/json\" \\\n  -H \"X-PAYMENT: <x402_payment_header>\" \\\n  -d '{\"token\": \"0x0000000000000000000000000000000000000000\"}'","exampleRequest":{"token":"0x0000000000000000000000000000000000000000"},"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 at 10,000 base units ($0.01)","source_url":"https://bridge.eruditepay.com/v1/base/market/top-gainers"},{"claim":"Provider is Erudite Intelligence LLC, operating the EruditePay x402 Bridge facilitator","source_url":"https://bridge.eruditepay.com"},{"claim":"EruditePay Bridge is FinCEN MSB registered with BSA ID 31000324258137","source_url":"https://bridge.eruditepay.com"},{"claim":"Facilitator for Base payment path is Coinbase CDP x402","source_url":"https://bridge.eruditepay.com/v1/base/market/top-gainers"}],"useCases":["Retrieve a list of top-gaining crypto tokens for portfolio monitoring dashboards","Feed real-time gainer data into trading bots or alert systems","Enrich agent workflows with on-chain market intelligence for decision-making"],"bestFor":["Agents or bots needing programmatic access to crypto market movers","Developers building crypto dashboards who want pay-per-call pricing","Users who prefer micropayment access without API key registration"],"notFor":["Users needing historical time-series or OHLCV candle data (not indicated as supported)","Applications requiring free or high-volume bulk market data","Non-crypto market data needs (equities, forex, commodities)"],"kindDetails":{},"updatedAt":"2026-04-22T01:39:00.710Z"}}