{"id":"f646b91c-5898-49b4-8d05-8a6383bfcada","shortId":"zyK2yF","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 endpoint `/api/v1/stripe/charges/96` is one of many offered by the provider, which hosts a broad catalog spanning data & analytics, AI & machine learning (sentiment analysis, summarization, classification, embeddings), finance & Web3 (price feeds, exchange rates, token quotes, gas estimates), and infrastructure utilities (geocoding, validation, conversion, generation). All endpoints share a uniform $0.02-per-request pricing model with no API keys, no rate limits, and no minimum commitments.\n\nThe x402 challenge confirms the endpoint is live, accepting POST requests and requiring an X-PAYMENT header. Payment is made in USDC (contract 0x8335…2913 on Base) to address 0x1A2B…85F3, with a maxAmountRequired of 20000 base units (i.e., $0.02 given USDC's 6 decimals). The timeout is 300 seconds. The endpoint returns application/json responses.\n\nDocumentation is extremely thin — the /docs, /pricing, /api, and /README pages all render only a \"Connect wallet\" prompt with no further content. There is no OpenAPI spec, no request/response schema documentation, and no examples of what the endpoint actually returns. The name \"stripe/charges/96\" suggests it may relate to Stripe charge data or a proxy for payment processing, but this is speculative. Without documentation, the actual functionality of this specific endpoint remains unclear.","tags":[],"capabilities":["x402-payment","usdc-settlement","base-network","per-call-pricing","no-api-key","json-response","post-method"],"categories":["api-gateway","payments"],"synonyms":["x402 API","pay-per-call API","USDC API","Base network API","lowpaymentfee","micropayment API","crypto-paid API"],"warnings":["No OpenAPI or schema documentation available for this endpoint","The specific purpose of /api/v1/stripe/charges/96 is undocumented — the name suggests Stripe charge data but this is unverified","All documentation pages (/docs, /pricing, /api, /README) render only 'Connect wallet' with no usable content","No request body schema or response schema is documented anywhere","The provider lists many endpoints but none have detailed documentation"],"endpointUrl":"https://lowpaymentfee.com/api/v1/stripe/charges/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/stripe/charges/96","description":"Premium API Access","outputSchema":{"input":{"type":"http","method":"GET","discoverable":true}},"maxAmountRequired":"20000","maxTimeoutSeconds":300}]},"qualityScore":"0.300","qualityRationale":"The endpoint is confirmed live via a valid x402 402 challenge, and pricing is clear ($0.02/request in USDC on Base). However, there is no OpenAPI spec, no documentation beyond a landing page listing, no request/response examples, and the actual functionality of this specific endpoint (stripe/charges/96) is undocumented and unclear. The docs, pricing, and README pages are all empty beyond a wallet connect 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'/api/v1/stripe/charges/96':58 '/docs':183 '/pricing':184 '/readme':187 '/request':17,34 '0.02':16,33,105,162 '0x1a2b':152 '0x8335':146 '20000':158 '2913':147 '300':171 '6':166 '85f3':153 'Base network API' 'USDC API' 'accept':130 'access':6,23,42 'actual':216,242 'address':151 'ai':75 'analysi':79 'analyt':74 'api':5,22,41,113 'application/json':176 'base':8,25,53,149,159 'base-network' 'behind':43 'broad':70 'call':12,29 'catalog':71 'challeng':124 'charg':227 'classif':81 'commit':121 'confirm':125 'connect':193 'content':199 'contract':145 'convers':98 'crypto-paid API' 'data':73,228 'decim':167 'document':178,208,240 'embed':82 'endpoint':36,57,101,127,174,215,247 'estim':92 'exampl':211 'exchang':87 'extrem':180 'feed':86 'financ':83 'function':243 'gas':91 'gate':3,20 'generat':99 'geocod':96 'given':163 'header':139 'host':68 'i.e':161 'infrastructur':94 'json-response' 'key':114 'learn':77 'limit':117 'live':129 'lowpaymentfee' 'lowpaymentfee.com':38 'machin':76 'made':142 'mani':62 'maxamountrequir':156 'may':223 'micropayment API' 'minimum':120 'model':110 'name':219 'network':54 'no-api-key' 'offer':63 'one':60 'openapi':203 'page':188 'paid':9,26 'pay-per-call API' 'payment':48,138,140,233 'paywal':46 'per':11,28,107 'per-cal':10,27 'per-call-pricing' 'per-request':106 'post':131 'post-method' 'premium':4,21,40 'price':85,109 'process':234 'prompt':195 'provid':39,66 'proxi':231 'quot':90 'rate':88,116 'relat':224 'remain':248 'render':190 'request':108,132 'request/response':206 'requir':134 'respons':177 'return':175,217 'schema':207 'second':172 'sentiment':78 'settl':47 'share':102 'span':72 'spec':204 'specif':56,246 'specul':238 'stripe':226 'stripe/charges/96':220 'suggest':221 'summar':80 'thin':181 'timeout':169 'token':89 'unclear':249 'uniform':104 'unit':160 'usdc':14,31,50,144,164 'usdc-settlement' 'util':95 'valid':97 'wallet':194 'web3':84 'without':239 'x':137 'x-payment':136 'x402':2,19,45,123 'x402 API' 'x402-gated':1,18 'x402-payment'","prices":[{"id":"8f9ea922-ed7a-4f79-a62f-f39ff7465091","listingId":"f646b91c-5898-49b4-8d05-8a6383bfcada","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/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":"2026-04-18T18:54:44.525Z"}],"sources":[{"listingId":"f646b91c-5898-49b4-8d05-8a6383bfcada","source":"x402_bazaar","sourceId":"https://lowpaymentfee.com/api/v1/stripe/charges/96","sourceUrl":"https://api.cdp.coinbase.com/platform/v2/x402/discovery/resources","isPrimary":true,"firstSeenAt":"2026-04-18T18:54:44.525Z","lastSeenAt":"2026-04-22T21:31:26.750Z"}],"details":{"listingId":"f646b91c-5898-49b4-8d05-8a6383bfcada","quickStartSnippet":"curl -X POST https://lowpaymentfee.com/api/v1/stripe/charges/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 x402 challenge with maxAmountRequired of 20000 base units in USDC on Base","source_url":"https://lowpaymentfee.com/api/v1/stripe/charges/96"},{"claim":"All endpoints are priced at $0.02 per request with no API keys, no rate limits, and instant access","source_url":"https://lowpaymentfee.com"},{"claim":"The provider offers endpoints across Data & Analytics, AI & ML, Finance & Web3, and Infrastructure categories","source_url":"https://lowpaymentfee.com"},{"claim":"USDC asset contract is 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913 on Base network","source_url":"https://lowpaymentfee.com/api/v1/stripe/charges/96"}],"useCases":["Programmatic access to premium API services without traditional API key management","Agent-driven workflows that need pay-per-call access settled in USDC on Base","Accessing data, AI, finance, or utility endpoints with no subscription commitment"],"bestFor":["Developers or agents wanting frictionless per-request billing in crypto","Use cases requiring no rate limits and instant access without signup","x402-compatible agent toolchains on the Base network"],"notFor":["Users who need detailed API documentation or response schema guarantees before integrating","High-volume use cases where per-request pricing at $0.02 may be expensive compared to bulk plans","Anyone requiring fiat-only payment rails"],"kindDetails":{"x402_version":1,"resource_type":"http","bazaar_last_updated":"2026-02-17T23:13:54.5Z"},"updatedAt":"2026-04-22T21:31:26.750Z"}}