{"id":"6b116083-0e72-418c-a0da-d8423207f598","shortId":"kdgmBV","kind":"x402","title":"x402-gated premium API access on Base, pay $0.02 per request in USDC — no API keys required.","tagline":"x402-gated premium API access on Base, pay $0.02 per request in USDC — no API keys required.","description":"This endpoint at lowpaymentfee.com provides \"Premium API Access\" via the x402 payment protocol on the Base network. The specific resource `/api/v1/accounts/174` is one of many endpoints offered by the platform, which spans categories including Data & Analytics, AI & Machine Learning, Finance & Web3, and Infrastructure utilities. All endpoints are priced at $0.02 per request, payable in USDC (USD Coin) on Base, with no API keys, rate limits, or upfront commitments required.\n\nThe x402 challenge confirms the endpoint is live and accepts exact-scheme payments of up to 20,000 base units of USDC (0x8335…2913 on Base), which equals $0.02 given USDC's 6 decimals. Payments are sent to address 0x1A2B13E97f5F837C8F9FA1F95a1484B7C70d85F3 with a maximum timeout of 300 seconds. The endpoint accepts HTTP POST requests and returns application/json.\n\nWhile the platform advertises a broad suite of APIs (metrics, reports, sentiment analysis, text summarization, embeddings, price feeds, geocoding, etc.), this specific listing covers the `/api/v1/accounts/174` resource. Documentation beyond the landing page is extremely sparse — the docs, API, pricing, and README pages all render only a \"Connect wallet\" prompt with no substantive content. There is no OpenAPI spec, no request/response schema documentation, and no usage examples available from the crawled material. The actual functionality behind this particular accounts endpoint is unclear.","tags":[],"capabilities":["x402-payment","usdc-on-base","per-request-billing","no-api-key","json-response","http-post"],"categories":["api-gateway","payments"],"synonyms":["x402 API","pay-per-call API","USDC micropayment API","Base network API","lowpaymentfee","crypto-paid API","402 payment required"],"warnings":["No OpenAPI or schema documentation available — all docs/pricing/README pages return only a wallet-connect prompt","The specific functionality of /api/v1/accounts/174 is completely undocumented; 'Premium API Access' is a generic label","No request body schema or response schema is documented anywhere in the crawled material","The platform lists many endpoints but none have detailed documentation beyond a name and price"],"endpointUrl":"https://lowpaymentfee.com/api/v1/accounts/174","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/174","description":"Premium API Access","outputSchema":{"input":{"type":"http","method":"GET","discoverable":true}},"maxAmountRequired":"20000","maxTimeoutSeconds":300}]},"qualityScore":"0.350","qualityRationale":"The x402 challenge is live and pricing is clear ($0.02 USDC on Base), but there is no OpenAPI spec, no request/response schema, no documentation, and no examples. The actual functionality of the /api/v1/accounts/174 endpoint is undocumented. This is effectively a stub 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'0.02':10,28,86,135 '000':124 '0x1a2b13e97f5f837c8f9fa1f95a1484b7c70d85f3':146 '0x8335':129 '20':123 '2913':130 '300':152 '402 payment required' '6':139 'Base network API' 'USDC micropayment API' 'accept':115,156 'access':6,24,44 'account':240 'actual':235 'address':145 'advertis':166 'ai':73 'analysi':175 'analyt':72 'api':5,16,23,34,43,98,171,200 'application/json':162 'avail':229 'base':8,26,52,95,125,132 'behind':237 'beyond':191 'broad':168 'categori':69 'challeng':108 'coin':93 'commit':104 'confirm':109 'connect':209 'content':215 'cover':186 'crawl':232 'crypto-paid API' 'data':71 'decim':140 'doc':199 'document':190,224 'embed':178 'endpoint':38,62,82,111,155,241 'equal':134 'etc':182 'exact':117 'exact-schem':116 'exampl':228 'extrem':196 'feed':180 'financ':76 'function':236 'gate':3,21 'geocod':181 'given':136 'http':157 'http-post' 'includ':70 'infrastructur':79 'json-response' 'key':17,35,99 'land':193 'learn':75 'limit':101 'list':185 'live':113 'lowpaymentfee' 'lowpaymentfee.com':40 'machin':74 'mani':61 'materi':233 'maximum':149 'metric':172 'network':53 'no-api-key' 'offer':63 'one':59 'openapi':219 'page':194,204 'particular':239 'pay':9,27 'pay-per-call API' 'payabl':89 'payment':48,119,141 'per':11,29,87 'per-request-billing' 'platform':66,165 'post':158 'premium':4,22,42 'price':84,179,201 'prompt':211 'protocol':49 'provid':41 'rate':100 'readm':203 'render':206 'report':173 'request':12,30,88,159 'request/response':222 'requir':18,36,105 'resourc':56,189 'return':161 'schema':223 'scheme':118 'second':153 'sent':143 'sentiment':174 'span':68 'spars':197 'spec':220 'specif':55,184 'substant':214 'suit':169 'summar':177 'text':176 'timeout':150 'unclear':243 'unit':126 'upfront':103 'usag':227 'usd':92 'usdc':14,32,91,128,137 'usdc-on-base' 'util':80 'via':45 'wallet':210 'web3':77 'x402':2,20,47,107 'x402 API' 'x402-gated':1,19 'x402-payment'","prices":[{"id":"239c687a-1393-4a00-ba46-0a5c20c178c2","listingId":"6b116083-0e72-418c-a0da-d8423207f598","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/174","description":"Premium API Access","outputSchema":{"input":{"type":"http","method":"GET","discoverable":true}},"maxAmountRequired":"20000","maxTimeoutSeconds":300}],"asset_contract":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","max_timeout_seconds":300},"createdAt":"2026-04-18T18:41:24.711Z"}],"sources":[{"listingId":"6b116083-0e72-418c-a0da-d8423207f598","source":"x402_bazaar","sourceId":"https://lowpaymentfee.com/api/v1/accounts/174","sourceUrl":"https://api.cdp.coinbase.com/platform/v2/x402/discovery/resources","isPrimary":true,"firstSeenAt":"2026-04-18T18:41:24.711Z","lastSeenAt":"2026-04-24T08:02:47.048Z"}],"details":{"listingId":"6b116083-0e72-418c-a0da-d8423207f598","quickStartSnippet":"curl -X POST https://lowpaymentfee.com/api/v1/accounts/174 \\\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 402 challenge accepting USDC on Base with maxAmountRequired of 20000 base units ($0.02)","source_url":"https://lowpaymentfee.com/api/v1/accounts/174"},{"claim":"All endpoints are priced at $0.02 per request with no API keys, no rate limits, and instant access on Base","source_url":"https://lowpaymentfee.com"},{"claim":"The platform offers endpoints across Data & Analytics, AI & ML, Finance & Web3, and Infrastructure categories","source_url":"https://lowpaymentfee.com"},{"claim":"USDC contract on Base is 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","source_url":"https://lowpaymentfee.com/api/v1/accounts/174"}],"useCases":["Agent-driven API consumption with automatic per-call USDC payments","Accessing premium data or account information without managing API keys","Programmatic pay-as-you-go access to various utility and data endpoints"],"bestFor":["Developers or agents who want keyless, pay-per-request API access","Users already holding USDC on Base who want frictionless micropayments","Prototyping integrations where subscription commitments are undesirable"],"notFor":["Users who need detailed API documentation or OpenAPI specs before integrating","High-volume consumers who would benefit from bulk pricing or subscriptions","Anyone without a Base-compatible wallet or USDC holdings"],"kindDetails":{"x402_version":1,"resource_type":"http","bazaar_last_updated":"2026-02-17T23:14:33.318Z"},"updatedAt":"2026-04-24T08:02:47.048Z"}}