{"id":"322c096f-4975-42bf-910c-47b3b0682fd4","shortId":"SGPzJG","kind":"x402","title":"Simulate Base blockchain transactions via x402-paid crypto data intelligence endpoint.","tagline":"Simulate Base blockchain transactions via x402-paid crypto data intelligence endpoint.","description":"This endpoint at bridge.eruditepay.com provides transaction simulation on the Base network (eip155:8453). It accepts a POST request with a transaction hash and a token/contract address, returning simulation results as JSON. The endpoint is operated by Erudite Intelligence LLC and is gated behind the x402 payment protocol (v2).\n\nPayment is accepted in two ways: USDC on Base (0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913) or USDT on Tron (TR7NHqjeKQxGTCi8q8ZY4pL8otSzgjLj6t). The per-call cost is 10,000 base units, which for 6-decimal stablecoins equals $0.01 (one cent) per request. The x402 facilitator used is Coinbase CDP for the Base payment path. The endpoint description in the x402 challenge is \"Crypto data intelligence.\"\n\nDocumentation is sparse — the provider's /docs path returns a 404, and the only schema available comes from the x402 Bazaar extension embedded in the 402 challenge. The input schema specifies two fields: `hash` (a transaction hash) and `address` (a token or contract address to analyze). The output is a JSON object with a `success` boolean and a `data` object whose structure is not further documented. The broader EruditePay Bridge site describes itself as an x402 payment facilitator supporting 20 blockchains, registered as a FinCEN MSB (BSA ID 31000324258137), and operating non-custodially.","tags":[],"capabilities":["transaction-simulation","base-chain","x402-payment","usdc-payment","usdt-tron-payment","crypto-data-intelligence","json-api","post-endpoint"],"categories":["crypto","blockchain","defi"],"synonyms":["tx simulation","transaction analysis","Base transaction simulator","blockchain tx simulate","crypto transaction preview","EruditePay tx simulation","on-chain simulation"],"warnings":["No dedicated API documentation available — /docs returns 404","Output schema is a stub: the `data` field structure is completely undocumented","The endpoint description is generic ('Crypto data intelligence') and does not detail what simulation results are returned","Cannot verify actual response format without a paid call"],"endpointUrl":"https://bridge.eruditepay.com/v1/base/tx/simulation","protocol":"x402","transport":"http","auth":{"type":"x402","details":[{"asset":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","extra":{"name":"USD Coin","version":"2"},"payTo":"0x24c5da6267AEbEBfCBf7B325753C5B2538A5B09B","amount":"8000","scheme":"exact","network":"eip155:8453","maxTimeoutSeconds":300},{"asset":"TR7NHqjeKQxGTCi8q8ZY4pL8otSzgjLj6t","extra":{"name":"TronTransferAuthorization","version":"1","wrapper":"THGkLBrLY1G5VovZjjK1jP9upyxRdMNL3b"},"payTo":"TSevuRZFjpckeMSSDhQFoiAkPCkckuE5TP","amount":"8000","scheme":"exact","network":"tron:728126428","maxTimeoutSeconds":300}]},"qualityScore":"0.450","qualityRationale":"The endpoint is live (402 challenge captured) with a clear Bazaar schema for input, but the output schema is essentially empty (just `{success, data: {}}`). No dedicated documentation exists (/docs returns 404), and the actual response structure for `data` is undocumented. Pricing is clear at 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'0.01':104 '000':95 '0x833589fcd6edb6e08f4c7c32d4f71b54bda02913':82 '10':94 '20':211 '31000324258137':220 '402':157 '404':142 '6':100 '8453':37 'Base transaction simulator' 'EruditePay tx simulation' 'accept':39,75 'address':50,170,175 'analyz':177 'avail':147 'base':2,14,34,81,96,118 'base-chain' 'bazaar':152 'behind':67 'blockchain':3,15,212 'blockchain tx simulate' 'boolean':187 'bridg':201 'bridge.eruditepay.com':28 'broader':199 'bsa':218 'call':91 'cdp':115 'cent':106 'challeng':127,158 'coinbas':114 'come':148 'contract':174 'cost':92 'crypto':9,21,129 'crypto transaction preview' 'crypto-data-intelligence' 'custodi':225 'data':10,22,130,190 'decim':101 'describ':203 'descript':123 'document':132,197 'eip155':36 'embed':154 'endpoint':12,24,26,57,122 'equal':103 'erudit':61 'eruditepay':200 'extens':153 'facilit':111,209 'field':164 'fincen':216 'gate':66 'hash':46,165,168 'id':219 'input':160 'intellig':11,23,62,131 'json':55,182 'json-api' 'llc':63 'msb':217 'network':35 'non':224 'non-custodi':223 'object':183,191 'on-chain simulation' 'one':105 'oper':59,222 'output':179 'paid':8,20 'path':120,139 'payment':70,73,119,208 'per':90,107 'per-cal':89 'post':41 'post-endpoint' 'protocol':71 'provid':29,136 'regist':213 'request':42,108 'result':53 'return':51,140 'schema':146,161 'simul':1,13,31,52 'site':202 'spars':134 'specifi':162 'stablecoin':102 'structur':193 'success':186 'support':210 'token':172 'token/contract':49 'tr7nhqjekqxgtci8q8zy4pl8otszgjlj6t':87 'transact':4,16,30,45,167 'transaction analysis' 'transaction-simulation' 'tron':86 'two':77,163 'tx simulation' 'unit':97 'usdc':79 'usdc-payment' 'usdt':84 'usdt-tron-payment' 'use':112 'v2':72 'via':5,17 'way':78 'whose':192 'x402':7,19,69,110,126,151,207 'x402-paid':6,18 'x402-payment'","prices":[{"id":"976c7479-24c1-4680-8989-7112a6592e3e","listingId":"322c096f-4975-42bf-910c-47b3b0682fd4","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":"8000","scheme":"exact","network":"eip155:8453","maxTimeoutSeconds":300},{"asset":"TR7NHqjeKQxGTCi8q8ZY4pL8otSzgjLj6t","extra":{"name":"TronTransferAuthorization","version":"1","wrapper":"THGkLBrLY1G5VovZjjK1jP9upyxRdMNL3b"},"payTo":"TSevuRZFjpckeMSSDhQFoiAkPCkckuE5TP","amount":"8000","scheme":"exact","network":"tron:728126428","maxTimeoutSeconds":300}],"asset_contract":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","max_timeout_seconds":300},"createdAt":"2026-04-21T18:32:37.455Z"}],"sources":[{"listingId":"322c096f-4975-42bf-910c-47b3b0682fd4","source":"x402_bazaar","sourceId":"https://bridge.eruditepay.com/v1/base/tx/simulation","sourceUrl":"https://api.cdp.coinbase.com/platform/v2/x402/discovery/resources","isPrimary":true,"firstSeenAt":"2026-04-21T18:32:37.455Z","lastSeenAt":"2026-04-22T07:02:23.431Z"}],"details":{"listingId":"322c096f-4975-42bf-910c-47b3b0682fd4","quickStartSnippet":"curl -X POST https://bridge.eruditepay.com/v1/base/tx/simulation \\\n  -H \"Content-Type: application/json\" \\\n  -H \"X-PAYMENT: <x402_payment_header>\" \\\n  -d '{\"hash\": \"0xabc...123\", \"address\": \"0xdef...456\"}'","exampleRequest":{"hash":"0x0000000000000000000000000000000000000000000000000000000000000000","address":"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 payment options at 10,000 base units ($0.01)","source_url":"https://bridge.eruditepay.com/v1/base/tx/simulation"},{"claim":"Operator is Erudite Intelligence LLC, FinCEN MSB registered with BSA ID 31000324258137","source_url":"https://bridge.eruditepay.com"},{"claim":"EruditePay Bridge supports 20 blockchains and charges 0.5% per settlement for its facilitator service","source_url":"https://bridge.eruditepay.com"},{"claim":"Input schema requires hash (transaction hash) and address (token or contract address) fields","source_url":"https://bridge.eruditepay.com/v1/base/tx/simulation"}],"useCases":["Simulate a Base blockchain transaction before execution to preview outcomes","Analyze a token or contract address for transaction behavior","Integrate pay-per-call transaction intelligence into trading bots or wallets","Pre-flight check transactions to detect potential failures or unexpected results"],"bestFor":["Developers building on Base who need per-call transaction simulation","Agents or bots that need programmatic tx previews without monthly subscriptions","Applications requiring low-cost ($0.01/call) on-demand crypto data intelligence"],"notFor":["Users needing free or bulk transaction simulation at high volume","Projects requiring detailed, well-documented API schemas and response formats","Non-Base-chain transaction simulation (endpoint is Base-specific)"],"kindDetails":{},"updatedAt":"2026-04-22T02:16:53.862Z"}}