{"id":"1f9c545b-4702-4ee4-b840-90c0034b6c52","shortId":"UTFjYx","kind":"x402","title":"Pay-per-call premium API access on Base via x402 — $0.02/request in USDC.","tagline":"Pay-per-call premium API access on Base via x402 — $0.02/request in USDC.","description":"This endpoint at lowpaymentfee.com provides \"Premium API Access\" via the x402 payment protocol on the Base network. The specific path `/api/v1/transactions/92` is one of many endpoints offered by this provider, which spans categories including Data & Analytics, AI & Machine Learning, Finance & Web3, and Infrastructure utilities.\n\nThe provider advertises a flat $0.02 per request pricing model with no API keys, no rate limits, and instant access. Payment is settled in USDC (USD Coin) on Base. The x402 challenge confirms the endpoint is live, accepting POST requests with a maximum amount of 20,000 base units of USDC (which equals $0.02 given USDC's 6 decimals). The payment timeout is 300 seconds.\n\nWhile the provider lists many endpoints across analytics, AI/ML, finance, and utility categories, the specific functionality of `/api/v1/transactions/92` is not clearly documented. The endpoint path suggests it may relate to a transaction record or financial data retrieval, but no detailed schema or response documentation is available. The docs, pricing, and API pages all appear to require wallet connection and provide no additional technical detail beyond the landing page.","tags":[],"capabilities":["x402-payment","usdc-settlement","base-network","pay-per-request","no-api-key","post-method"],"categories":["finance","infrastructure"],"synonyms":["premium API","pay-per-call API","x402 endpoint","USDC API","Base network API","micropayment API","lowpaymentfee"],"warnings":["No documentation available for the specific endpoint /api/v1/transactions/92","No request or response schema provided","Docs, pricing, and API pages require wallet connection and contain no useful content","The exact functionality of this endpoint is unknown — 'Premium API Access' is generic"],"endpointUrl":"https://lowpaymentfee.com/api/v1/transactions/92","protocol":"x402","transport":"http","auth":{"type":"x402","details":[{"asset":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","extra":{"name":"USD Coin","version":"2"},"payTo":"0x1A2B13E97f5F837C8F9FA1F95a1484B7C70d85F3","scheme":"exact","network":"base","mimeType":"application/json","resource":"https://lowpaymentfee.com/api/v1/transactions/92","description":"Premium API Access","outputSchema":{"input":{"type":"http","method":"GET","discoverable":true}},"maxAmountRequired":"20000","maxTimeoutSeconds":300}]},"qualityScore":"0.350","qualityRationale":"The endpoint is live (402 challenge confirmed) and pricing is clear ($0.02/request in USDC on Base), but there is no documentation of what this specific endpoint returns, no request/response schema, and the crawled docs pages are empty beyond a wallet-connect prompt. The specific purpose of /api/v1/transactions/92 is 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'/request':13,28 '0.02':12,27,80,128 '000':121 '20':120 '300':138 '6':132 'Base network API' 'USDC API' 'accept':112 'access':7,22,38,94 'across':146 'addit':201 'advertis':77 'ai':67 'ai/ml':148 'amount':118 'analyt':66,147 'api':6,21,37,87,190 'appear':193 'avail':185 'base':9,24,46,103,122 'base-network' 'beyond':204 'call':4,19 'categori':63,152 'challeng':106 'clear':160 'coin':101 'confirm':107 'connect':197 'data':65,175 'decim':133 'detail':179,203 'doc':187 'document':161,183 'endpoint':32,56,109,145,163 'equal':127 'financ':70,149 'financi':174 'flat':79 'function':155 'given':129 'includ':64 'infrastructur':73 'instant':93 'key':88 'land':206 'learn':69 'limit':91 'list':143 'live':111 'lowpaymentfee' 'lowpaymentfee.com':34 'machin':68 'mani':55,144 'maximum':117 'may':167 'micropayment API' 'model':84 'network':47 'no-api-key' 'offer':57 'one':53 'page':191,207 'path':50,164 'pay':2,17 'pay-per-cal':1,16 'pay-per-call API' 'pay-per-request' 'payment':42,95,135 'per':3,18,81 'post':113 'post-method' 'premium':5,20,36 'premium API' 'price':83,188 'protocol':43 'provid':35,60,76,142,199 'rate':90 'record':172 'relat':168 'request':82,114 'requir':195 'respons':182 'retriev':176 'schema':180 'second':139 'settl':97 'span':62 'specif':49,154 'suggest':165 'technic':202 'timeout':136 'transact':171 'unit':123 'usd':100 'usdc':15,30,99,125,130 'usdc-settlement' 'util':74,151 'via':10,25,39 'wallet':196 'web3':71 'x402':11,26,41,105 'x402 endpoint' 'x402-payment'","prices":[{"id":"867cf32d-4d8f-4d54-9ffa-d3837269d8b4","listingId":"1f9c545b-4702-4ee4-b840-90c0034b6c52","amountUsd":null,"unit":"per_call","nativeCurrency":"USD COIN","nativeAmount":"20000","chain":"base","payTo":"0x1A2B13E97f5F837C8F9FA1F95a1484B7C70d85F3","paymentMethod":"x402-usd coin","isPrimary":true,"details":{"scheme":"exact","mime_type":"application/json","accepts_all":[{"asset":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","extra":{"name":"USD Coin","version":"2"},"payTo":"0x1A2B13E97f5F837C8F9FA1F95a1484B7C70d85F3","scheme":"exact","network":"base","mimeType":"application/json","resource":"https://lowpaymentfee.com/api/v1/transactions/92","description":"Premium API Access","outputSchema":{"input":{"type":"http","method":"GET","discoverable":true}},"maxAmountRequired":"20000","maxTimeoutSeconds":300}],"asset_contract":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","max_timeout_seconds":300},"createdAt":"2026-04-18T19:27:08.847Z"}],"sources":[{"listingId":"1f9c545b-4702-4ee4-b840-90c0034b6c52","source":"x402_bazaar","sourceId":"https://lowpaymentfee.com/api/v1/transactions/92","sourceUrl":"https://api.cdp.coinbase.com/platform/v2/x402/discovery/resources","isPrimary":true,"firstSeenAt":"2026-04-18T19:27:08.847Z","lastSeenAt":"2026-04-24T00:32:40.318Z"}],"details":{"listingId":"1f9c545b-4702-4ee4-b840-90c0034b6c52","quickStartSnippet":"# Send a POST with x402 payment header to access the endpoint\ncurl -X POST https://lowpaymentfee.com/api/v1/transactions/92 \\\n  -H \"Content-Type: application/json\" \\\n  -H \"X-PAYMENT: <x402_payment_token>\"","exampleRequest":null,"exampleResponse":null,"schema":{"input":{"type":"http","method":"GET","discoverable":true}},"openapiUrl":null,"agentsTxtUrl":null,"citations":[{"claim":"Flat pricing of $0.02 per request with no API keys, no rate limits, instant access on Base network","source_url":"https://lowpaymentfee.com"},{"claim":"x402 challenge confirms live endpoint accepting POST with maxAmountRequired of 20000 base units USDC on Base","source_url":"https://lowpaymentfee.com/api/v1/transactions/92"},{"claim":"USDC asset address 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913 on Base network","source_url":"https://lowpaymentfee.com/api/v1/transactions/92"}],"useCases":["Accessing premium data or transaction information without subscription commitments","Programmatic pay-per-use API calls settled in USDC on Base","Agent-driven API consumption with no authentication keys required"],"bestFor":["Developers wanting zero-commitment pay-per-call API access","AI agents that can settle payments via x402 protocol","Users who prefer crypto-native micropayments over traditional billing"],"notFor":["Users needing detailed API documentation or response schemas before purchasing","High-volume consumers who would benefit from bulk pricing or subscriptions","Users without access to USDC on the Base network"],"kindDetails":{"x402_version":1,"resource_type":"http","bazaar_last_updated":"2026-02-17T23:13:35.868Z"},"updatedAt":"2026-04-24T00:32:40.318Z"}}