{"id":"cedfc5ef-a45d-41f5-a6c8-ff06bd95b639","shortId":"EbYacr","kind":"x402","title":"x402-gated premium API endpoint on Base, pay-per-request with USDC.","tagline":"x402-gated premium API endpoint on Base, pay-per-request with USDC.","description":"This endpoint at lowpaymentfee.com is one of many x402-protocol-gated API endpoints offered by the provider. The specific resource `/api/v1/products/96` is labeled \"Premium API Access\" and returns JSON content. It accepts POST requests and requires an x402 payment header settled in USDC on the Base network. The cost per request is $0.02 (20,000 base units of USDC with 6 decimals).\n\nThe broader lowpaymentfee.com platform advertises a suite of pay-per-call APIs spanning data & analytics (metrics, reports, data export, insights), AI & machine learning (sentiment analysis, text summarization, classification, embeddings), finance & Web3 (price feeds, exchange rates, token quotes, gas estimates), and infrastructure utilities (geocoding, validation, conversion, generation). All endpoints are priced uniformly at $0.02 per request with no API keys, no rate limits, and no minimum commitments required. Payments settle on the Base L2 network using USDC (contract 0x8335…2913).\n\nHowever, the specific functionality behind `/api/v1/products/96` is not documented beyond the generic label \"Premium API Access.\" The crawled docs, pricing, and README pages all returned only a \"Connect wallet\" prompt with no additional technical documentation, request/response schemas, or usage examples. Without knowing what data or service this particular product endpoint returns, agents should treat this as an opaque paid resource until further documentation is available.","tags":[],"capabilities":["x402-payment","usdc-settlement","base-network","pay-per-request","json-response","post-method"],"categories":["api","payments"],"synonyms":["lowpaymentfee","x402 api","paid api","usdc api","base network api","micropayment api","premium api"],"warnings":["No documentation available — docs, pricing, and README pages all return only 'Connect wallet' with no content","The specific functionality of /api/v1/products/96 ('Premium API Access') is completely undocumented","No request body schema or response schema provided","No examples of successful responses available"],"endpointUrl":"https://lowpaymentfee.com/api/v1/products/96","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/products/96","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, but there is no documentation, no request/response schema, and no indication of what 'Premium API Access' actually returns. The docs, pricing, and README pages are all blank beyond a wallet-connect prompt. This is effectively a stub 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'0.02':82,145 '000':84 '0x8335':170 '20':83 '2913':171 '6':90 'accept':61 'access':55,187 'addit':204 'advertis':96 'agent':223 'ai':113 'analysi':117 'analyt':107 'api':5,19,41,54,104,150,186 'avail':236 'base':8,22,75,85,164 'base network api' 'base-network' 'behind':176 'beyond':181 'broader':93 'call':103 'classif':120 'commit':158 'connect':199 'content':59 'contract':169 'convers':137 'cost':78 'crawl':189 'data':106,110,215 'decim':91 'doc':190 'document':180,206,234 'embed':121 'endpoint':6,20,30,42,140,221 'estim':131 'exampl':211 'exchang':126 'export':111 'feed':125 'financ':122 'function':175 'gas':130 'gate':3,17,40 'generat':138 'generic':183 'geocod':135 'header':69 'howev':172 'infrastructur':133 'insight':112 'json':58 'json-response' 'key':151 'know':213 'l2':165 'label':52,184 'learn':115 'limit':154 'lowpaymentfee' 'lowpaymentfee.com':32,94 'machin':114 'mani':36 'metric':108 'micropayment api' 'minimum':157 'network':76,166 'offer':43 'one':34 'opaqu':229 'page':194 'paid':230 'paid api' 'particular':219 'pay':10,24,101 'pay-per-cal':100 'pay-per-request':9,23 'payment':68,160 'per':11,25,79,102,146 'platform':95 'post':62 'post-method' 'premium':4,18,53,185 'premium api' 'price':124,142,191 'product':220 'prompt':201 'protocol':39 'provid':46 'quot':129 'rate':127,153 'readm':193 'report':109 'request':12,26,63,80,147 'request/response':207 'requir':65,159 'resourc':49,231 'return':57,196,222 'schema':208 'sentiment':116 'servic':217 'settl':70,161 'span':105 'specif':48,174 'suit':98 'summar':119 'technic':205 'text':118 'token':128 'treat':225 'uniform':143 'unit':86 'usag':210 'usdc':14,28,72,88,168 'usdc api' 'usdc-settlement' 'use':167 'util':134 'valid':136 'wallet':200 'web3':123 'without':212 'x402':2,16,38,67 'x402 api' 'x402-gated':1,15 'x402-payment' 'x402-protocol-gated':37","prices":[{"id":"1363dec7-57e4-4c76-8d32-a36cc55155d5","listingId":"cedfc5ef-a45d-41f5-a6c8-ff06bd95b639","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/products/96","description":"Premium API Access","outputSchema":{"input":{"type":"http","method":"GET","discoverable":true}},"maxAmountRequired":"20000","maxTimeoutSeconds":300}],"asset_contract":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","max_timeout_seconds":300},"createdAt":"2026-04-18T18:34:41.841Z"}],"sources":[{"listingId":"cedfc5ef-a45d-41f5-a6c8-ff06bd95b639","source":"x402_bazaar","sourceId":"https://lowpaymentfee.com/api/v1/products/96","sourceUrl":"https://api.cdp.coinbase.com/platform/v2/x402/discovery/resources","isPrimary":true,"firstSeenAt":"2026-04-18T18:34:41.841Z","lastSeenAt":"2026-04-23T00:31:03.415Z"}],"details":{"listingId":"cedfc5ef-a45d-41f5-a6c8-ff06bd95b639","quickStartSnippet":"curl -X POST https://lowpaymentfee.com/api/v1/products/96 \\\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 requiring USDC payment on Base network with maxAmountRequired of 20000 base units","source_url":"https://lowpaymentfee.com/api/v1/products/96"},{"claim":"All endpoints are priced at $0.02 per request with no API keys, no rate limits, and instant access on Base network","source_url":"https://lowpaymentfee.com"},{"claim":"The platform offers APIs across Data & Analytics, AI & ML, Finance & Web3, and Infrastructure categories","source_url":"https://lowpaymentfee.com"},{"claim":"USDC asset contract is 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","source_url":"https://lowpaymentfee.com/api/v1/products/96"}],"useCases":["Accessing a pay-per-call API endpoint without needing API keys or subscriptions","Programmatic purchasing of premium data or services using USDC on Base","Agent-driven API consumption with per-request crypto micropayments"],"bestFor":["Developers wanting keyless, pay-as-you-go API access","AI agents that can settle x402 payments on Base","Users who prefer crypto micropayments over subscription billing"],"notFor":["Users who need detailed documentation or guaranteed SLAs before purchasing","Anyone without a Base-compatible USDC wallet","Use cases requiring free or trial access before committing payment"],"kindDetails":{"x402_version":1,"resource_type":"http","bazaar_last_updated":"2026-02-27T17:36:18.309Z"},"updatedAt":"2026-04-23T00:31:03.415Z"}}