{"id":"3ec150c7-f291-4b1b-9a80-2c13ae7ff78d","shortId":"5wbAGj","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/179` 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, payable in USDC on the Base network with no API keys, rate limits, or commitments required.\n\nThe x402 challenge confirms the endpoint is live, accepting POST requests and settling payments in USDC (contract 0x8335…2913 on Base) to address 0x1A2B…85F3. The max amount required is 20,000 base units of USDC (6 decimals), which equals $0.02. The endpoint returns application/json responses. The platform advertises a broad suite of sibling endpoints including sentiment analysis, text summarization, classification, embeddings, price feeds, exchange rates, geocoding, validation, and more — all at the same $0.02 price point.\n\nNote that the specific functionality of the `/api/v1/accounts/179` path is not documented beyond the generic label \"Premium API Access.\" There is no OpenAPI schema, no request/response examples, and the docs, pricing, and API pages all render only a \"Connect wallet\" prompt with no additional content. The actual data or service returned by this particular endpoint is unclear.","tags":[],"capabilities":["x402-payment","usdc-base","pay-per-request","json-response","no-api-key","post-method"],"categories":["api-gateway","infrastructure"],"synonyms":["low payment fee API","x402 premium API","pay-per-call API","USDC micropayment API","Base network API","402 payment required API"],"warnings":["The specific functionality of /api/v1/accounts/179 is not documented — 'Premium API Access' is a generic label","All documentation pages (docs, pricing, API, README) render only 'Connect wallet' with no useful content","No OpenAPI spec, no request body schema, and no response examples are available","The platform lists many endpoint categories but none have detailed documentation"],"endpointUrl":"https://lowpaymentfee.com/api/v1/accounts/179","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/179","description":"Premium API Access","outputSchema":{"input":{"type":"http","method":"GET","discoverable":true}},"maxAmountRequired":"20000","maxTimeoutSeconds":300}]},"qualityScore":"0.300","qualityRationale":"The endpoint is live and returns a valid x402 challenge with clear pricing ($0.02 USDC on Base). However, there is no OpenAPI schema, no request/response examples, no documentation beyond a wallet-connect prompt, and the specific functionality of /api/v1/accounts/179 is entirely undocumented. This is effectively a stub 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'/request':13,28 '0.02':12,27,75,134,168 '000':125 '0x1a2b':117 '0x8335':111 '20':124 '2913':112 '402 payment required API' '6':130 '85f3':118 'Base network API' 'USDC micropayment API' 'accept':102 'access':7,22,38,189 'actual':217 'addit':214 'address':116 'advertis':142 'ai':61 'amount':121 'analysi':151 'analyt':60 'api':6,21,37,87,188,203 'application/json':138 'base':9,24,83,114,126 'beyond':183 'broad':144 'call':4,19 'categori':69 'challeng':96 'classif':154 'commit':92 'confirm':97 'connect':209 'content':215 'contract':110 'data':59,218 'decim':131 'doc':200 'document':182 'embed':155 'endpoint':32,52,71,99,136,148,225 'equal':133 'exampl':197 'exchang':158 'feed':157 'financ':64 'function':175 'generic':185 'geocod':160 'includ':149 'infrastructur':67 'json-response' 'key':88 'label':186 'learn':63 'limit':90 'live':101 'low payment fee API' 'lowpaymentfee.com':34 'machin':62 'mani':51 'max':120 'network':84 'no-api-key' 'note':171 'offer':53 'one':49 'openapi':193 'page':204 'particular':224 'path':46,179 'pay':2,17 'pay-per-cal':1,16 'pay-per-call API' 'pay-per-request' 'payabl':78 'payment':42,107 'per':3,18,76 'platform':56,141 'point':170 'post':103 'post-method' 'premium':5,20,36,187 'price':73,156,169,201 'prompt':211 'protocol':43 'provid':35 'rate':89,159 'render':206 'request':77,104 'request/response':196 'requir':93,122 'respons':139 'return':137,221 'schema':194 'sentiment':150 'servic':220 'settl':106 'sibl':147 'span':58 'specif':45,174 'suit':145 'summar':153 'text':152 'unclear':227 'unit':127 'usdc':15,30,80,109,129 'usdc-base' 'util':68 'valid':161 'via':10,25,39 'wallet':210 'web3':65 'x402':11,26,41,95 'x402 premium API' 'x402-payment'","prices":[{"id":"97ee9e11-d1de-40ad-a710-5cba12abce00","listingId":"3ec150c7-f291-4b1b-9a80-2c13ae7ff78d","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/179","description":"Premium API Access","outputSchema":{"input":{"type":"http","method":"GET","discoverable":true}},"maxAmountRequired":"20000","maxTimeoutSeconds":300}],"asset_contract":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","max_timeout_seconds":300},"createdAt":"2026-04-18T18:41:29.543Z"}],"sources":[{"listingId":"3ec150c7-f291-4b1b-9a80-2c13ae7ff78d","source":"x402_bazaar","sourceId":"https://lowpaymentfee.com/api/v1/accounts/179","sourceUrl":"https://api.cdp.coinbase.com/platform/v2/x402/discovery/resources","isPrimary":true,"firstSeenAt":"2026-04-18T18:41:29.543Z","lastSeenAt":"2026-04-24T08:02:49.627Z"}],"details":{"listingId":"3ec150c7-f291-4b1b-9a80-2c13ae7ff78d","quickStartSnippet":"curl -X POST https://lowpaymentfee.com/api/v1/accounts/179 \\\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":"Endpoint returns 402 with x402 challenge requiring 20000 base units of USDC on Base","source_url":"https://lowpaymentfee.com/api/v1/accounts/179"},{"claim":"All endpoints priced at $0.02/request with no API keys, no rate limits, instant access on Base network","source_url":"https://lowpaymentfee.com"},{"claim":"USDC asset contract on Base is 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","source_url":"https://lowpaymentfee.com/api/v1/accounts/179"},{"claim":"Platform offers endpoints across Data & Analytics, AI & ML, Finance & Web3, and Infrastructure categories","source_url":"https://lowpaymentfee.com"}],"useCases":["Agent-driven API consumption with automatic per-call USDC micropayments","Accessing premium data or services without API key registration","Programmatic account data retrieval via x402-enabled endpoints"],"bestFor":["Developers or agents wanting zero-signup, pay-as-you-go API access","x402-compatible wallets and agent frameworks on Base","Low-cost micropayment experimentation on Base L2"],"notFor":["Users needing detailed API documentation or guaranteed SLAs","Use cases requiring known, well-documented request/response schemas","High-volume consumers who need bulk pricing or rate-limit guarantees"],"kindDetails":{"x402_version":1,"resource_type":"http","bazaar_last_updated":"2026-02-17T23:14:33.012Z"},"updatedAt":"2026-04-24T08:02:49.627Z"}}