{"id":"253ec088-d2b0-476e-b807-53adf917a0e5","shortId":"qhFzc8","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 path `/api/v1/accounts/170` appears to be one of many endpoints offered by the platform, which advertises a broad catalog spanning data & analytics, AI & machine learning, finance & Web3, and infrastructure utilities — all priced at $0.02 per request.\n\nThe endpoint is live and returns a valid x402 challenge on POST requests. Payment is settled on the Base network using USDC (contract 0x8335…2913) with an exact-scheme payment of 20,000 base units (i.e., $0.02 given USDC's 6 decimals). There are no API keys required, no rate limits advertised, and access is described as instant once payment is made. The payment timeout is 300 seconds.\n\nHowever, the specific functionality behind `/api/v1/accounts/170` is unclear. The provider's landing page lists many endpoints across different categories but does not explicitly list this particular path. There is no OpenAPI schema, no request/response documentation, and the docs, pricing, API, and README pages all render only a \"Connect wallet\" prompt with no additional content. The endpoint's description is simply \"Premium API Access\" with a JSON MIME type, but what data it returns or what input it expects is not documented.","tags":[],"capabilities":["x402-payment","usdc-settlement","base-network","pay-per-request","no-api-key","json-response"],"categories":["api","infrastructure"],"synonyms":["x402 API","pay-per-call API","USDC API access","Base network API","micropayment API","lowpaymentfee","accounts endpoint"],"warnings":["The specific functionality of /api/v1/accounts/170 is not documented anywhere on the provider's site","All documentation pages (docs, pricing, API, README) render only 'Connect wallet' with no content","No OpenAPI schema or request/response examples are available","The endpoint path does not appear in the provider's listed API catalog, making its purpose unclear"],"endpointUrl":"https://lowpaymentfee.com/api/v1/accounts/170","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/170","description":"Premium API Access","outputSchema":{"input":{"type":"http","method":"GET","discoverable":true}},"maxAmountRequired":"20000","maxTimeoutSeconds":300}]},"qualityScore":"0.250","qualityRationale":"The endpoint is live and returns a valid x402 challenge, but there is no documentation, no OpenAPI schema, no request/response examples, and the specific purpose of /api/v1/accounts/170 is undocumented. The docs pages are empty beyond a wallet connect prompt. This is effectively a stub 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'/request':13,28 '0.02':12,27,78,118 '000':114 '0x8335':104 '20':113 '2913':105 '300':148 '6':122 'Base network API' 'USDC API access' 'access':7,22,38,135,212 'accounts endpoint' 'across':166 'addit':202 'advertis':60,133 'ai':67 'analyt':66 'api':6,21,37,127,189,211 'appear':48 'base':9,24,99,115 'base-network' 'behind':154 'broad':62 'call':4,19 'catalog':63 'categori':168 'challeng':90 'connect':197 'content':203 'contract':103 'data':65,220 'decim':123 'describ':137 'descript':207 'differ':167 'doc':187 'document':184,230 'endpoint':32,54,82,165,205 'exact':109 'exact-schem':108 'expect':227 'explicit':172 'financ':70 'function':153 'given':119 'howev':150 'i.e':117 'infrastructur':73 'input':225 'instant':139 'json':215 'json-response' 'key':128 'land':161 'learn':69 'limit':132 'list':163,173 'live':84 'lowpaymentfee' 'lowpaymentfee.com':34 'machin':68 'made':143 'mani':53,164 'micropayment API' 'mime':216 'network':100 'no-api-key' 'offer':55 'one':51 'openapi':180 'page':162,192 'particular':175 'path':46,176 'pay':2,17 'pay-per-cal':1,16 'pay-per-call API' 'pay-per-request' 'payment':42,94,111,141,145 'per':3,18,79 'platform':58 'post':92 'premium':5,20,36,210 'price':76,188 'prompt':199 'protocol':43 'provid':35,159 'rate':131 'readm':191 'render':194 'request':80,93 'request/response':183 'requir':129 'return':86,222 'schema':181 'scheme':110 'second':149 'settl':96 'simpli':209 'span':64 'specif':45,152 'timeout':146 'type':217 'unclear':157 'unit':116 'usdc':15,30,102,120 'usdc-settlement' 'use':101 'util':74 'valid':88 'via':10,25,39 'wallet':198 'web3':71 'x402':11,26,41,89 'x402 API' 'x402-payment'","prices":[{"id":"83392529-dc1a-4a7c-b5af-26db732d8026","listingId":"253ec088-d2b0-476e-b807-53adf917a0e5","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/170","description":"Premium API Access","outputSchema":{"input":{"type":"http","method":"GET","discoverable":true}},"maxAmountRequired":"20000","maxTimeoutSeconds":300}],"asset_contract":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","max_timeout_seconds":300},"createdAt":"2026-04-18T18:41:24.748Z"}],"sources":[{"listingId":"253ec088-d2b0-476e-b807-53adf917a0e5","source":"x402_bazaar","sourceId":"https://lowpaymentfee.com/api/v1/accounts/170","sourceUrl":"https://api.cdp.coinbase.com/platform/v2/x402/discovery/resources","isPrimary":true,"firstSeenAt":"2026-04-18T18:41:24.748Z","lastSeenAt":"2026-04-22T15:01:01.256Z"}],"details":{"listingId":"253ec088-d2b0-476e-b807-53adf917a0e5","quickStartSnippet":"curl -X POST https://lowpaymentfee.com/api/v1/accounts/170 \\\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":"The endpoint returns a valid x402 challenge with maxAmountRequired of 20000 base units in USDC on Base","source_url":"https://lowpaymentfee.com/api/v1/accounts/170"},{"claim":"The platform advertises $0.02/request pricing with no API keys, no rate limits, and instant access","source_url":"https://lowpaymentfee.com"},{"claim":"USDC asset contract on Base is 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","source_url":"https://lowpaymentfee.com/api/v1/accounts/170"}],"useCases":["Accessing premium API data with per-request USDC micropayments on Base","Agent-driven API consumption without API key management","Testing x402 payment protocol integrations"],"bestFor":["Developers experimenting with x402 pay-per-call patterns","Agents that need keyless, on-demand API access settled in USDC on Base","Low-volume consumers who prefer pay-as-you-go over subscriptions"],"notFor":["Users who need detailed API documentation before integrating","High-volume consumers who need bulk pricing or rate guarantees","Anyone without a Base-compatible USDC wallet"],"kindDetails":{"x402_version":1,"resource_type":"http","bazaar_last_updated":"2026-02-17T23:14:33.263Z"},"updatedAt":"2026-04-22T15:01:01.256Z"}}