{"id":"5f65da0e-ac7b-489a-b121-70043ad0e7d0","shortId":"5MgPDq","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. The specific resource `/api/v1/accounts/119` is one of many endpoints offered by the platform, which spans data & analytics, AI & machine learning, finance & Web3, and infrastructure utility categories. All endpoints are priced at $0.02 per request, settled in USDC on the Base network with no API keys, no rate limits, and no commitments required.\n\nThe x402 challenge confirms the endpoint is live, accepting POST requests and requiring payment of up to 20,000 base units of USDC (0x8335…2913 on Base, 6 decimals = $0.02) per call. Payment is made via the `exact` scheme to address 0x1A2B13E97f5F837C8F9FA1F95a1484B7C70d85F3 with a 300-second timeout. The response MIME type is application/json.\n\nHowever, the specific functionality of the `/api/v1/accounts/119` path is unclear. The provider's landing page lists many API categories (metrics, reports, sentiment analysis, summarization, classification, embeddings, price feeds, exchange rates, geocoding, validation, etc.) but does not describe an \"accounts\" endpoint. No OpenAPI schema, detailed documentation, or example request/response payloads are available — the docs, pricing, and README pages all render only a \"Connect wallet\" prompt. The actual data returned by this particular endpoint remains unknown without making a paid request.","tags":[],"capabilities":["x402-payment","usdc-base","pay-per-request","json-response","no-api-key","post-method"],"categories":["api-gateway","data"],"synonyms":["premium API","pay-per-call API","x402 endpoint","USDC API","Base network API","lowpaymentfee","micropayment API"],"warnings":["The specific functionality of /api/v1/accounts/119 is not documented anywhere on the provider's site","All documentation pages (docs, pricing, README, api) render only 'Connect wallet' with no useful content","No OpenAPI or schema available — request/response formats are unknown","The 'accounts' path does not appear in the provider's listed API categories, making its purpose unclear"],"endpointUrl":"https://lowpaymentfee.com/api/v1/accounts/119","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/accounts/119","description":"Premium API Access","outputSchema":{"input":{"type":"http","method":"GET","discoverable":true}},"maxAmountRequired":"20000","maxTimeoutSeconds":300}]},"qualityScore":"0.300","qualityRationale":"The endpoint is confirmed live via a valid 402 challenge with clear pricing ($0.02 USDC on Base). However, the specific purpose of /api/v1/accounts/119 is undocumented, there is no OpenAPI schema, no example requests or responses, and the docs pages are empty. The listing is essentially a stub with verified liveness and pricing but no functional 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'/request':13,28 '0.02':12,27,75,125 '000':114 '0x1a2b13e97f5f837c8f9fa1f95a1484b7c70d85f3':137 '0x8335':119 '20':113 '2913':120 '300':140 '6':123 'Base network API' 'USDC API' 'accept':104 'access':7,22,38 'account':187 'actual':214 'address':136 'ai':61 'analysi':171 'analyt':60 'api':6,21,37,87,166 'application/json':148 'avail':199 'base':9,24,83,115,122 'call':4,19,127 'categori':69,167 'challeng':98 'classif':173 'commit':94 'confirm':99 'connect':210 'data':59,215 'decim':124 'describ':185 'detail':192 'doc':201 'document':193 'embed':174 'endpoint':32,52,71,101,188,220 'etc':181 'exact':133 'exampl':195 'exchang':177 'feed':176 'financ':64 'function':152 'geocod':179 'howev':149 'infrastructur':67 'json-response' 'key':88 'land':162 'learn':63 'limit':91 'list':164 'live':103 'lowpaymentfee' 'lowpaymentfee.com':34 'machin':62 'made':130 'make':224 'mani':51,165 'metric':168 'micropayment API' 'mime':145 'network':84 'no-api-key' 'offer':53 'one':49 'openapi':190 'page':163,205 'paid':226 'particular':219 'path':156 'pay':2,17 'pay-per-cal':1,16 'pay-per-call API' 'pay-per-request' 'payload':197 'payment':42,109,128 'per':3,18,76,126 'platform':56 'post':105 'post-method' 'premium':5,20,36 'premium API' 'price':73,175,202 'prompt':212 'protocol':43 'provid':35,160 'rate':90,178 'readm':204 'remain':221 'render':207 'report':169 'request':77,106,227 'request/response':196 'requir':95,108 'resourc':46 'respons':144 'return':216 'schema':191 'scheme':134 'second':141 'sentiment':170 'settl':78 'span':58 'specif':45,151 'summar':172 'timeout':142 'type':146 'unclear':158 'unit':116 'unknown':222 'usdc':15,30,80,118 'usdc-base' 'util':68 'valid':180 'via':10,25,39,131 'wallet':211 'web3':65 'without':223 'x402':11,26,41,97 'x402 endpoint' 'x402-payment'","prices":[{"id":"bd4e948d-c09d-477b-b4df-fe37b7564d2b","listingId":"5f65da0e-ac7b-489a-b121-70043ad0e7d0","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/accounts/119","description":"Premium API Access","outputSchema":{"input":{"type":"http","method":"GET","discoverable":true}},"maxAmountRequired":"20000","maxTimeoutSeconds":300}],"asset_contract":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","max_timeout_seconds":300},"createdAt":"2026-04-18T18:40:46.170Z"}],"sources":[{"listingId":"5f65da0e-ac7b-489a-b121-70043ad0e7d0","source":"x402_bazaar","sourceId":"https://lowpaymentfee.com/api/v1/accounts/119","sourceUrl":"https://api.cdp.coinbase.com/platform/v2/x402/discovery/resources","isPrimary":true,"firstSeenAt":"2026-04-18T18:40:46.170Z","lastSeenAt":"2026-04-24T09:03:19.450Z"}],"details":{"listingId":"5f65da0e-ac7b-489a-b121-70043ad0e7d0","quickStartSnippet":"# Requires an x402-compatible client that handles the payment challenge\ncurl -X POST https://lowpaymentfee.com/api/v1/accounts/119 \\\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":"All endpoints priced at $0.02 per request with no API keys, no rate limits, instant access on Base network","source_url":"https://lowpaymentfee.com"},{"claim":"x402 challenge returns maxAmountRequired of 20000 base units of USDC (6 decimals = $0.02) on Base","source_url":"https://lowpaymentfee.com/api/v1/accounts/119"},{"claim":"Platform offers APIs across data & analytics, AI & ML, finance & Web3, and infrastructure categories","source_url":"https://lowpaymentfee.com"}],"useCases":["Accessing premium data or services without API key registration","Agent-driven pay-per-call workflows settled in USDC on Base","Programmatic access to account-level data behind a paywall"],"bestFor":["Developers who want instant, keyless API access via crypto micropayments","AI agents with x402-compatible payment capabilities","Users who prefer pay-as-you-go pricing with no subscriptions"],"notFor":["Users who need detailed documentation or OpenAPI specs before integrating","Anyone without a Base-network USDC wallet or x402 client","High-volume consumers who need bulk pricing or rate guarantees"],"kindDetails":{"x402_version":1,"resource_type":"http","bazaar_last_updated":"2026-02-17T23:14:35.183Z"},"updatedAt":"2026-04-24T09:03:19.450Z"}}