{"id":"905c6f78-90d4-45fb-a30d-9c1facb0e3f2","shortId":"wagk9Y","kind":"x402","title":"x402-gated premium API access on Base, paid per-call in USDC at $0.02/request.","tagline":"x402-gated premium API access on Base, paid per-call in USDC at $0.02/request.","description":"This endpoint at lowpaymentfee.com provides \"Premium API Access\" behind an x402 paywall, settling payments in USDC on the Base network. The specific resource path `/api/v1/stripe/charges/108` suggests a Stripe-related charges endpoint, though the exact functionality behind this particular route is not documented beyond the generic \"Premium API Access\" label.\n\nThe provider operates a broader platform offering multiple API categories including 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 advertised at $0.02 per request with no API keys, no rate limits, and instant access via x402 payment on the Base network.\n\nThe x402 challenge for this specific endpoint advertises a maxAmountRequired of 20000 base units of USDC (contract 0x8335…2913 on Base, 6 decimals), which equals $0.02 per call. Payment is made via the x402 \"exact\" scheme to address 0x1A2B13E97f5F837C8F9FA1F95a1484B7C70d85F3 with a 300-second timeout. The endpoint accepts POST requests. Documentation beyond the landing page is essentially empty (all sub-pages just show \"Connect wallet\"), so the actual request/response schema for this specific endpoint is unknown.","tags":[],"capabilities":["x402-payment","usdc-settlement","base-network","per-call-pricing","post-method","no-api-key","stripe-charges"],"categories":["finance","infrastructure"],"synonyms":["premium API","pay-per-call API","x402 endpoint","USDC API","Base network API","stripe charges API","lowpaymentfee","micropayment API"],"warnings":["No documentation available — all doc/pricing/API pages are empty beyond 'Connect wallet'","No request or response schema provided; actual endpoint behavior is unknown","The specific purpose of '/api/v1/stripe/charges/108' is unclear — 'Premium API Access' is a generic label","No OpenAPI spec or examples available to verify what data this endpoint returns"],"endpointUrl":"https://lowpaymentfee.com/api/v1/stripe/charges/108","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/stripe/charges/108","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. However, there is no documentation, no OpenAPI schema, no request/response examples, and the actual functionality behind '/api/v1/stripe/charges/108' is completely opaque. All doc pages return only 'Connect wallet' with no 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'/request':17,34 '0.02':16,33,134,179 '0x1a2b13e97f5f837c8f9fa1f95a1484b7c70d85f3':192 '0x8335':171 '20000':165 '2913':172 '300':195 '6':175 'Base network API' 'USDC API' 'accept':200 'access':6,23,42,83,146 'actual':221 'address':191 'advertis':132,161 'ai':103 'analysi':107 'analyt':97 'api':5,22,41,82,93,139 'base':8,25,53,152,166,174 'base-network' 'behind':43,71 'beyond':78,204 'broader':89 'call':12,29,181 'categori':94 'challeng':156 'charg':65 'classif':110 'connect':217 'contract':170 'convers':127 'data':96,100 'decim':176 'document':77,203 'embed':111 'empti':210 'endpoint':36,66,130,160,199,227 'equal':178 'essenti':209 'estim':121 'exact':69,188 'exchang':116 'export':101 'feed':115 'financ':112 'function':70 'gas':120 'gate':3,20 'generat':128 'generic':80 'geocod':125 'includ':95 'infrastructur':123 'insight':102 'instant':145 'key':140 'label':84 'land':206 'learn':105 'limit':143 'lowpaymentfee' 'lowpaymentfee.com':38 'machin':104 'made':184 'maxamountrequir':163 'metric':98 'micropayment API' 'multipl':92 'network':54,153 'no-api-key' 'offer':91 'oper':87 'page':207,214 'paid':9,26 'particular':73 'path':58 'pay-per-call API' 'payment':48,149,182 'paywal':46 'per':11,28,135,180 'per-cal':10,27 'per-call-pricing' 'platform':90 'post':201 'post-method' 'premium':4,21,40,81 'premium API' 'price':114 'provid':39,86 'quot':119 'rate':117,142 'relat':64 'report':99 'request':136,202 'request/response':222 'resourc':57 'rout':74 'schema':223 'scheme':189 'second':196 'sentiment':106 'settl':47 'show':216 'specif':56,159,226 'stripe':63 'stripe charges API' 'stripe-charges' 'stripe-rel':62 'sub':213 'sub-pag':212 'suggest':60 'summar':109 'text':108 'though':67 'timeout':197 'token':118 'unit':167 'unknown':229 'usdc':14,31,50,169 'usdc-settlement' 'util':124 'valid':126 'via':147,185 'wallet':218 'web3':113 'x402':2,19,45,148,155,187 'x402 endpoint' 'x402-gated':1,18 'x402-payment'","prices":[{"id":"2ba753dd-a827-489b-9aa9-83e428b8805d","listingId":"905c6f78-90d4-45fb-a30d-9c1facb0e3f2","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/stripe/charges/108","description":"Premium API Access","outputSchema":{"input":{"type":"http","method":"GET","discoverable":true}},"maxAmountRequired":"20000","maxTimeoutSeconds":300}],"asset_contract":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","max_timeout_seconds":300},"createdAt":"2026-04-18T18:53:54.392Z"}],"sources":[{"listingId":"905c6f78-90d4-45fb-a30d-9c1facb0e3f2","source":"x402_bazaar","sourceId":"https://lowpaymentfee.com/api/v1/stripe/charges/108","sourceUrl":"https://api.cdp.coinbase.com/platform/v2/x402/discovery/resources","isPrimary":true,"firstSeenAt":"2026-04-18T18:53:54.392Z","lastSeenAt":"2026-04-25T23:32:32.757Z"}],"details":{"listingId":"905c6f78-90d4-45fb-a30d-9c1facb0e3f2","quickStartSnippet":"curl -X POST https://lowpaymentfee.com/api/v1/stripe/charges/108 \\\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":"All endpoints priced at $0.02 per request with no API keys, no rate limits, instant access on Base network","source_url":"https://lowpaymentfee.com"},{"claim":"x402 challenge returns maxAmountRequired of 20000 base units USDC on Base with 300-second timeout","source_url":"https://lowpaymentfee.com/api/v1/stripe/charges/108"},{"claim":"USDC asset contract on Base: 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","source_url":"https://lowpaymentfee.com/api/v1/stripe/charges/108"},{"claim":"Platform offers APIs across Data & Analytics, AI & ML, Finance & Web3, and Infrastructure categories","source_url":"https://lowpaymentfee.com"}],"useCases":["Programmatic access to a Stripe charges endpoint without traditional API key management","Agent-driven per-call payment for premium data or services","Integrating x402 payment flows into automated pipelines"],"bestFor":["Developers experimenting with x402 payment protocols","Agents that need keyless, pay-per-use API access on Base","Low-volume callers who prefer per-request billing over subscriptions"],"notFor":["Users needing detailed API documentation or OpenAPI specs before integrating","High-volume use cases where $0.02/request adds up significantly","Anyone requiring non-crypto payment methods"],"kindDetails":{"x402_version":1,"resource_type":"http","bazaar_last_updated":"2026-02-17T23:13:57.012Z"},"updatedAt":"2026-04-25T23:32:32.757Z"}}