{"id":"0ba3a2a3-2bc6-472d-8d7f-97c5333d663c","shortId":"zvkSPn","kind":"x402","title":"Retrieve Base blockchain block data by number via x402 micropayment","tagline":"Retrieve Base blockchain block data by number via x402 micropayment","description":"This endpoint returns block information for the Base blockchain (eip155:8453) given a block number. It is served by Erudite Intelligence LLC through their EruditePay x402 Bridge, which acts as a payment facilitator supporting 20 blockchains. The endpoint accepts POST requests with a JSON body specifying the chain, and returns block data in JSON format.\n\nPayment is required per-call via the x402 protocol (HTTP 402 challenge). The endpoint accepts two payment options: USDC on Base (eip155:8453) at 10,000 base units ($0.01 given USDC's 6 decimals), or USDT on Tron (tron:728126428) at 10,000 base units ($0.01). Payment is facilitated through the Coinbase CDP x402 facilitator for the Base option. The provider is a FinCEN-registered MSB (BSA ID 31000324258137) operating in a non-custodial manner with direct settlement routing.\n\nThe endpoint description in the x402 challenge is \"Crypto data intelligence,\" and the schema indicates the request body should include a \"chain\" field (string) specifying the blockchain network. The response format wraps results in a `{\"success\": true, \"data\": {}}` envelope. Documentation at docs.eruditepay.com is referenced on the landing page but the /docs path on the bridge itself returns a 404, so detailed field-level documentation for the block-by-number endpoint is not available from the crawled material.","tags":[],"capabilities":["blockchain-data","block-by-number","base-chain","x402-payment","usdc-payment","usdt-payment","tron-settlement","crypto-intelligence","per-call-micropayment"],"categories":["crypto","blockchain","data"],"synonyms":["block lookup","base block data","blockchain block query","block by number API","Base chain block","crypto block info","on-chain block data","EruditePay block API"],"warnings":["No detailed documentation available for this specific endpoint; docs.eruditepay.com is referenced but not crawlable, and /docs on the bridge returns 404","The example response in the bazaar schema is a stub with an empty data object—actual response structure is unknown","The request body field 'blockNumber' is inferred from the endpoint path '/block/by-number' but is not present in the provided schema","The bazaar schema only specifies 'chain' as a body property; additional required fields are undocumented"],"endpointUrl":"https://bridge.eruditepay.com/v1/base/block/by-number","protocol":"x402","transport":"http","auth":{"type":"x402","details":[{"asset":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","extra":{"name":"USD Coin","version":"2"},"payTo":"0x24c5da6267AEbEBfCBf7B325753C5B2538A5B09B","amount":"1000","scheme":"exact","network":"eip155:8453","maxTimeoutSeconds":300},{"asset":"TR7NHqjeKQxGTCi8q8ZY4pL8otSzgjLj6t","extra":{"name":"TronTransferAuthorization","version":"1","wrapper":"THGkLBrLY1G5VovZjjK1jP9upyxRdMNL3b"},"payTo":"TSevuRZFjpckeMSSDhQFoiAkPCkckuE5TP","amount":"1000","scheme":"exact","network":"tron:728126428","maxTimeoutSeconds":300}]},"qualityScore":"0.450","qualityRationale":"The endpoint is live (402 challenge captured) with clear pricing and a bazaar schema, but documentation is very sparse—no field-level docs for the block-by-number endpoint, the example response is an empty stub, and the docs URL returns 404. The request body schema only documents the 'chain' field; 'blockNumber' is inferred from the endpoint path name but not confirmed in the 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'0.01':105,122 '000':102,119 '10':101,118 '20':55 '31000324258137':146 '402':87 '404':216 '6':109 '728126428':116 '8453':31,99 'Base chain block' 'EruditePay block API' 'accept':59,91 'act':49 'avail':232 'base':2,12,28,97,103,120,134 'base block data' 'base-chain' 'block':4,14,24,34,71,226 'block by number API' 'block lookup' 'block-by-numb':225 'block-by-number' 'blockchain':3,13,29,56,184 'blockchain block query' 'blockchain-data' 'bodi':65,175 'bridg':47,212 'bsa':144 'call':81 'cdp':129 'chain':68,179 'challeng':88,164 'coinbas':128 'crawl':235 'crypto':166 'crypto block info' 'crypto-intelligence' 'custodi':152 'data':5,15,72,167,195 'decim':110 'descript':160 'detail':218 'direct':155 'docs.eruditepay.com':199 'document':197,222 'eip155':30,98 'endpoint':22,58,90,159,229 'envelop':196 'erudit':40 'eruditepay':45 'facilit':53,125,131 'field':180,220 'field-level':219 'fincen':141 'fincen-regist':140 'format':75,188 'given':32,106 'http':86 'id':145 'includ':177 'indic':172 'inform':25 'intellig':41,168 'json':64,74 'land':204 'level':221 'llc':42 'manner':153 'materi':236 'micropay':10,20 'msb':143 'network':185 'non':151 'non-custodi':150 'number':7,17,35,228 'on-chain block data' 'oper':147 'option':94,135 'page':205 'path':209 'payment':52,76,93,123 'per':80 'per-cal':79 'per-call-micropayment' 'post':60 'protocol':85 'provid':137 'referenc':201 'regist':142 'request':61,174 'requir':78 'respons':187 'result':190 'retriev':1,11 'return':23,70,214 'rout':157 'schema':171 'serv':38 'settlement':156 'specifi':66,182 'string':181 'success':193 'support':54 'tron':114,115 'tron-settlement' 'true':194 'two':92 'unit':104,121 'usdc':95,107 'usdc-payment' 'usdt':112 'usdt-payment' 'via':8,18,82 'wrap':189 'x402':9,19,46,84,130,163 'x402-payment'","prices":[{"id":"ce3d1d27-08ce-4f1d-88dd-b48ecd38870a","listingId":"0ba3a2a3-2bc6-472d-8d7f-97c5333d663c","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":"1000","scheme":"exact","network":"eip155:8453","maxTimeoutSeconds":300},{"asset":"TR7NHqjeKQxGTCi8q8ZY4pL8otSzgjLj6t","extra":{"name":"TronTransferAuthorization","version":"1","wrapper":"THGkLBrLY1G5VovZjjK1jP9upyxRdMNL3b"},"payTo":"TSevuRZFjpckeMSSDhQFoiAkPCkckuE5TP","amount":"1000","scheme":"exact","network":"tron:728126428","maxTimeoutSeconds":300}],"asset_contract":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","max_timeout_seconds":300},"createdAt":"2026-04-21T18:32:36.511Z"}],"sources":[{"listingId":"0ba3a2a3-2bc6-472d-8d7f-97c5333d663c","source":"x402_bazaar","sourceId":"https://bridge.eruditepay.com/v1/base/block/by-number","sourceUrl":"https://api.cdp.coinbase.com/platform/v2/x402/discovery/resources","isPrimary":true,"firstSeenAt":"2026-04-21T18:32:36.511Z","lastSeenAt":"2026-04-22T05:32:28.610Z"}],"details":{"listingId":"0ba3a2a3-2bc6-472d-8d7f-97c5333d663c","quickStartSnippet":"curl -X POST https://bridge.eruditepay.com/v1/base/block/by-number \\\n  -H \"Content-Type: application/json\" \\\n  -H \"X-PAYMENT: <x402_payment_header>\" \\\n  -d '{\"chain\": \"base\", \"blockNumber\": 12345678}'","exampleRequest":{"chain":"base","blockNumber":12345678},"exampleResponse":{"data":{},"success":true},"schema":null,"openapiUrl":null,"agentsTxtUrl":null,"citations":[{"claim":"Endpoint returns 402 with x402 v2 challenge accepting USDC on Base and USDT on Tron at 10,000 base units each","source_url":"https://bridge.eruditepay.com/v1/base/block/by-number"},{"claim":"USDC on Base uses 6 decimals, so 10,000 base units = $0.01","source_url":"https://bridge.eruditepay.com"},{"claim":"Provider is Erudite Intelligence LLC, FinCEN MSB registered with BSA ID 31000324258137","source_url":"https://bridge.eruditepay.com"},{"claim":"EruditePay Bridge supports 20 blockchains and operates non-custodially","source_url":"https://bridge.eruditepay.com"},{"claim":"Payment facilitated via Coinbase CDP x402 facilitator for Base chain option","source_url":"https://bridge.eruditepay.com/v1/base/block/by-number"}],"useCases":["Fetching specific block details on the Base blockchain by block number","Building blockchain explorers or analytics dashboards that need per-block data","Agents that need on-demand Base chain block information with pay-per-call pricing","Monitoring Base chain activity programmatically"],"bestFor":["AI agents needing on-demand Base blockchain block data without subscriptions","Developers who want pay-per-call blockchain data at $0.01 per request","Applications requiring x402-native crypto data endpoints"],"notFor":["High-volume block scanning where per-call costs would accumulate (consider a dedicated RPC node)","Querying non-Base blockchains (this endpoint is chain-specific to Base)","Users who need free or API-key-based blockchain data access"],"kindDetails":{},"updatedAt":"2026-04-22T01:56:09.641Z"}}