{"id":"a49f7fef-aac3-468c-8790-e1fbe1b29128","shortId":"TsK8zh","kind":"x402","title":"Top smart-contract analytics on Base, paid per-call via x402 in USDC or USDT.","tagline":"Top smart-contract analytics on Base, paid per-call via x402 in USDC or USDT.","description":"This endpoint from Erudite Intelligence LLC returns analytics about the most active or notable smart contracts on the Base blockchain (eip155:8453). It accepts a POST request with a JSON body containing a `query` parameter and returns structured JSON data. Payment is handled via the x402 protocol: each call costs 0.01 USDC on Base or 0.01 USDT on Tron, settled through the EruditePay Bridge facilitator.\n\nThe endpoint is live and returns a standard x402 v2 payment challenge (HTTP 402) to unauthenticated callers. The response schema indicates a JSON object with `success` (boolean) and `data` (object) fields, though the exact shape of the analytics payload within `data` is not documented beyond the placeholder example. The provider describes the service broadly as \"Crypto data intelligence.\"\n\nDocumentation is sparse — the provider's /docs path returns a 404, and no OpenAPI spec is published. The input schema specifies a `query` string parameter in the POST body, but valid query values, filtering options, pagination, and the detailed structure of the returned analytics data are all undocumented. Pricing is clear: 10,000 base units of USDC (6 decimals) = $0.01 per call on Base, or the equivalent in USDT on Tron.","tags":[],"capabilities":["blockchain-analytics","top-contracts","base-chain","x402-payment","usdc-payment","usdt-payment","tron-settlement","json-api","crypto-data-intelligence"],"categories":["crypto","analytics"],"synonyms":["top contracts Base","smart contract analytics","blockchain contract ranking","Base chain analytics","crypto contract activity","on-chain analytics","DeFi contract stats"],"warnings":["No documentation available — /docs returns 404 and no OpenAPI spec is published.","The output example is a stub: {\"success\": true, \"data\": {}}. The actual analytics payload structure is unknown.","Valid values for the 'query' parameter are undocumented; callers must guess or experiment.","Only the generic description 'Crypto data intelligence' is provided by the endpoint metadata."],"endpointUrl":"https://bridge.eruditepay.com/v1/base/analytics/top-contracts","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":"0.400","qualityRationale":"The endpoint is live (402 challenge captured) and pricing is clear ($0.01 per call). However, documentation is effectively absent: no OpenAPI spec, /docs returns 404, the output schema is a stub ({data: {}}), and valid query values are unknown. The listing is largely inferred from the x402 challenge and the provider's landing 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'0.01':85,90,217 '000':210 '10':209 '402':113 '404':168 '6':215 '8453':56 'Base chain analytics' 'DeFi contract stats' 'accept':58 'activ':46 'analyt':5,22,42,137,201 'base':7,24,53,88,211,221 'base-chain' 'beyond':144 'blockchain':54 'blockchain contract ranking' 'blockchain-analytics' 'bodi':65,186 'boolean':126 'bridg':98 'broad':153 'call':11,28,83,219 'caller':116 'challeng':111 'clear':208 'contain':66 'contract':4,21,50 'cost':84 'crypto':155 'crypto contract activity' 'crypto-data-intelligence' 'data':74,128,140,156,202 'decim':216 'describ':150 'detail':196 'document':143,158 'eip155':55 'endpoint':36,101 'equival':224 'erudit':38 'eruditepay':97 'exact':133 'exampl':147 'facilit':99 'field':130 'filter':191 'handl':77 'http':112 'indic':120 'input':176 'intellig':39,157 'json':64,73,122 'json-api' 'live':103 'llc':40 'notabl':48 'object':123,129 'on-chain analytics' 'openapi':171 'option':192 'pagin':193 'paid':8,25 'paramet':69,182 'path':165 'payload':138 'payment':75,110 'per':10,27,218 'per-cal':9,26 'placehold':146 'post':60,185 'price':206 'protocol':81 'provid':149,162 'publish':174 'queri':68,180,189 'request':61 'respons':118 'return':41,71,105,166,200 'schema':119,177 'servic':152 'settl':94 'shape':134 'smart':3,20,49 'smart contract analytics' 'smart-contract':2,19 'spars':160 'spec':172 'specifi':178 'standard':107 'string':181 'structur':72,197 'success':125 'though':131 'top':1,18 'top contracts Base' 'top-contracts' 'tron':93,228 'tron-settlement' 'unauthent':115 'undocu':205 'unit':212 'usdc':15,32,86,214 'usdc-payment' 'usdt':17,34,91,226 'usdt-payment' 'v2':109 'valid':188 'valu':190 'via':12,29,78 'within':139 'x402':13,30,80,108 'x402-payment'","prices":[{"id":"e0d7f7c7-0ed2-4a8f-9e5a-38beafebf79a","listingId":"a49f7fef-aac3-468c-8790-e1fbe1b29128","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":"2026-04-21T18:32:35.782Z"}],"sources":[{"listingId":"a49f7fef-aac3-468c-8790-e1fbe1b29128","source":"x402_bazaar","sourceId":"https://bridge.eruditepay.com/v1/base/analytics/top-contracts","sourceUrl":"https://api.cdp.coinbase.com/platform/v2/x402/discovery/resources","isPrimary":true,"firstSeenAt":"2026-04-21T18:32:35.782Z","lastSeenAt":"2026-04-22T16:33:12.384Z"}],"details":{"listingId":"a49f7fef-aac3-468c-8790-e1fbe1b29128","quickStartSnippet":"curl -X POST https://bridge.eruditepay.com/v1/base/analytics/top-contracts \\\n  -H \"Content-Type: application/json\" \\\n  -H \"X-PAYMENT: <x402_payment_header>\" \\\n  -d '{\"query\": \"top\"}'","exampleRequest":{"query":"example"},"exampleResponse":{"data":{},"success":true},"schema":null,"openapiUrl":null,"agentsTxtUrl":null,"citations":[{"claim":"The endpoint returns an x402 v2 payment challenge with USDC on Base (amount 10000, 6 decimals = $0.01) and USDT on Tron.","source_url":"https://bridge.eruditepay.com/v1/base/analytics/top-contracts"},{"claim":"The provider is Erudite Intelligence LLC, a FinCEN MSB registered entity (BSA ID 31000324258137).","source_url":"https://bridge.eruditepay.com"},{"claim":"The EruditePay Bridge facilitator supports 20 blockchains and charges 0.5% per settlement.","source_url":"https://bridge.eruditepay.com"},{"claim":"The endpoint description is 'Crypto data intelligence' and accepts POST with a JSON body containing a 'query' parameter.","source_url":"https://bridge.eruditepay.com/v1/base/analytics/top-contracts"}],"useCases":["Identify the most active or popular smart contracts on Base for research or monitoring","Feed top-contract data into trading bots or DeFi dashboards","Automate on-chain intelligence gathering for compliance or due-diligence workflows"],"bestFor":["Agents or apps needing programmatic access to Base contract analytics","Developers building crypto dashboards who want pay-per-call pricing without subscriptions","Automated pipelines that need x402-compatible data endpoints"],"notFor":["Users who need detailed documentation or guaranteed schema stability before integrating","Analytics across many chains simultaneously (this endpoint is Base-specific)","Free or bulk data access — every call costs $0.01"],"kindDetails":{},"updatedAt":"2026-04-22T01:35:05.361Z"}}