{"id":"e6136b2f-9c73-4785-8c52-835e15a06059","shortId":"NGWpJp","kind":"x402","title":"x402-gated premium API access on Base, pay $0.02 per request in USDC.","tagline":"x402-gated premium API access on Base, pay $0.02 per request in USDC.","description":"This endpoint at lowpaymentfee.com is part of a broader platform offering pay-per-request APIs across data & analytics, AI & machine learning, finance & Web3, and infrastructure categories. The specific endpoint `/api/v1/benefits/67` is labeled \"Premium API Access\" and is gated via the x402 protocol on the Base network. Payment is in USDC (contract 0x8335…2913) at a maximum cost of $0.02 per request (20,000 base units with 6 decimals).\n\nThe platform advertises a simple pricing model: $0.02 per request with no API keys, no rate limits, no minimums, and instant access. Other endpoints on the same domain cover sentiment analysis, text summarization, classification, embeddings, price feeds, exchange rates, geocoding, validation, conversion, and data export — all at the same $0.02 price point. However, the specific functionality behind `/api/v1/benefits/67` is not documented beyond the generic \"Premium API Access\" label. No OpenAPI schema, request/response examples, or detailed documentation were found in the crawl.\n\nThe endpoint is live and returns a valid x402 402 challenge. The platform root page loads successfully (HTTP 200). Documentation, pricing, API, and README pages all returned only a \"Connect wallet\" prompt with no substantive content, so the actual behavior and response format of this particular endpoint remain unknown.","tags":[],"capabilities":["x402-payment","usdc-payment","base-network","pay-per-request","no-api-key","json-response"],"categories":["general","api-gateway"],"synonyms":["premium API","paid API access","x402 API","USDC API","Base network API","lowpaymentfee","micropayment API"],"warnings":["The specific functionality of /api/v1/benefits/67 is unknown — 'Premium API Access' is the only description provided.","No OpenAPI schema, request body format, or response schema is available.","All documentation pages (docs, pricing, API, README) returned only a 'Connect wallet' prompt with no substantive content.","Cannot verify what data or service is actually returned upon successful payment."],"endpointUrl":"https://lowpaymentfee.com/api/v1/benefits/67","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/benefits/67","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 OpenAPI schema, no request/response examples, and the actual functionality behind 'Premium API Access' at /api/v1/benefits/67 is completely undocumented. All doc pages returned only 'Connect wallet' with no 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'0.02':10,24,88,105,147 '000':92 '0x8335':81 '20':91 '200':197 '2913':82 '402':188 '6':96 'Base network API' 'USDC API' 'access':6,20,64,119,164 'across':45 'actual':217 'advertis':100 'ai':48 'analysi':128 'analyt':47 'api':5,19,44,63,110,163,200 'base':8,22,74,93 'base-network' 'behavior':218 'behind':154 'beyond':159 'broader':37 'categori':55 'challeng':189 'classif':131 'connect':208 'content':214 'contract':80 'convers':139 'cost':86 'cover':126 'crawl':178 'data':46,141 'decim':97 'detail':172 'document':158,173,198 'domain':125 'embed':132 'endpoint':30,58,121,180,225 'exampl':170 'exchang':135 'export':142 'feed':134 'financ':51 'format':221 'found':175 'function':153 'gate':3,17,67 'generic':161 'geocod':137 'howev':150 'http':196 'infrastructur':54 'instant':118 'json-response' 'key':111 'label':61,165 'learn':50 'limit':114 'live':182 'load':194 'lowpaymentfee' 'lowpaymentfee.com':32 'machin':49 'maximum':85 'micropayment API' 'minimum':116 'model':104 'network':75 'no-api-key' 'offer':39 'openapi':167 'page':193,203 'paid API access' 'part':34 'particular':224 'pay':9,23,41 'pay-per-request':40 'payment':76 'per':11,25,42,89,106 'platform':38,99,191 'point':149 'premium':4,18,62,162 'premium API' 'price':103,133,148,199 'prompt':210 'protocol':71 'rate':113,136 'readm':202 'remain':226 'request':12,26,43,90,107 'request/response':169 'respons':220 'return':184,205 'root':192 'schema':168 'sentiment':127 'simpl':102 'specif':57,152 'substant':213 'success':195 'summar':130 'text':129 'unit':94 'unknown':227 'usdc':14,28,79 'usdc-payment' 'valid':138,186 'via':68 'wallet':209 'web3':52 'x402':2,16,70,187 'x402 API' 'x402-gated':1,15 'x402-payment'","prices":[{"id":"49db948e-5ea0-4cbb-94ce-954d3cb740d7","listingId":"e6136b2f-9c73-4785-8c52-835e15a06059","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/benefits/67","description":"Premium API Access","outputSchema":{"input":{"type":"http","method":"GET","discoverable":true}},"maxAmountRequired":"20000","maxTimeoutSeconds":300}],"asset_contract":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","max_timeout_seconds":300},"createdAt":"2026-04-18T19:59:48.056Z"}],"sources":[{"listingId":"e6136b2f-9c73-4785-8c52-835e15a06059","source":"x402_bazaar","sourceId":"https://lowpaymentfee.com/api/v1/benefits/67","sourceUrl":"https://api.cdp.coinbase.com/platform/v2/x402/discovery/resources","isPrimary":true,"firstSeenAt":"2026-04-18T19:59:48.056Z","lastSeenAt":"2026-04-22T05:31:54.393Z"}],"details":{"listingId":"e6136b2f-9c73-4785-8c52-835e15a06059","quickStartSnippet":"curl -X POST https://lowpaymentfee.com/api/v1/benefits/67 \\\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 402 challenge with maxAmountRequired of 20000 base units in USDC on Base","source_url":"https://lowpaymentfee.com/api/v1/benefits/67"},{"claim":"Platform pricing is $0.02 per request with no API keys, no rate limits, no minimums","source_url":"https://lowpaymentfee.com"},{"claim":"USDC asset contract is 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913 on Base network","source_url":"https://lowpaymentfee.com/api/v1/benefits/67"},{"claim":"The platform offers endpoints across data & analytics, AI & ML, finance & Web3, and infrastructure categories","source_url":"https://lowpaymentfee.com"}],"useCases":["Accessing premium data or services behind a per-request paywall","Agent-driven API consumption without pre-registration or API keys","Programmatic pay-as-you-go access to platform services"],"bestFor":["Agents or developers wanting zero-signup, pay-per-call API access","Use cases where per-request micropayments in USDC on Base are preferred","Exploring x402-protocol-based API monetization"],"notFor":["Users needing detailed documentation or guaranteed SLAs before purchasing","High-volume use cases where $0.02/request adds up significantly","Anyone requiring a known, well-documented response schema before calling"],"kindDetails":{"x402_version":1,"resource_type":"http","bazaar_last_updated":"2026-02-17T23:13:25.888Z"},"updatedAt":"2026-04-22T05:31:54.393Z"}}