{"id":"79a04794-af8c-4f59-b558-1274323bc47e","shortId":"meB8NR","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. It is one of many endpoints offered by the lowpaymentfee.com platform, which hosts a collection of pay-per-call APIs spanning data & analytics, AI & machine learning, finance & Web3, and infrastructure utilities. All endpoints on the platform share a uniform $0.02-per-request pricing model, settled in USDC on the Base network.\n\nThe specific endpoint `/api/v1/stripe/charges/38` sits under a \"stripe/charges\" path, suggesting it may relate to Stripe charge data or payment processing functionality, but no detailed documentation, request/response schemas, or usage examples are available from the crawled material. The platform advertises no API keys, no rate limits, and instant access — callers simply attach an x402 payment header with each request.\n\nThe x402 challenge is live and returns a well-formed 402 response. The payment is settled via the \"exact\" scheme on Base to address `0x1A2B...85F3`, using USDC (contract `0x8335...2913`). The `maxAmountRequired` of 20000 base units equals $0.02 (USDC uses 6 decimals). The endpoint accepts POST requests and returns `application/json`.","tags":[],"capabilities":["x402-payment","usdc-settlement","base-network","per-call-pricing","json-response","post-method"],"categories":["payments","api-gateway"],"synonyms":["x402 API","pay-per-call API","USDC micropayment API","lowpaymentfee","stripe charges API","Base network API","crypto-paid endpoint"],"warnings":["No request or response schema available — the actual functionality of /api/v1/stripe/charges/38 is unknown","All documentation pages (docs, api, pricing, README) returned only 'Connect wallet' with no substantive content","The endpoint path suggests Stripe charge-related functionality but this is unconfirmed","No OpenAPI spec, no AI plugin manifest, no agents.txt discovered"],"endpointUrl":"https://lowpaymentfee.com/api/v1/stripe/charges/38","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/38","description":"Premium API Access","outputSchema":{"input":{"type":"http","method":"GET","discoverable":true}},"maxAmountRequired":"20000","maxTimeoutSeconds":300}]},"qualityScore":"0.350","qualityRationale":"The x402 challenge is live and well-formed, confirming the endpoint works and pricing is clear ($0.02 USDC on Base). However, there is no documentation, no request/response schema, no examples, and the actual functionality behind this specific endpoint path (stripe/charges/38) is unexplained. The docs, pricing, and API pages all returned only 'Connect wallet' with no useful 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'/request':17,34 '0.02':16,33,87,197 '0x1a2b':183 '0x8335':188 '20000':193 '2913':189 '402':169 '6':200 '85f3':184 'Base network API' 'USDC micropayment API' 'accept':204 'access':6,23,42,147 'address':182 'advertis':138 'ai':71 'analyt':70 'api':5,22,41,67,140 'application/json':209 'attach':150 'avail':131 'base':8,25,98,180,194 'base-network' 'behind':43 'call':12,29,66 'caller':148 'challeng':160 'charg':115 'collect':61 'contract':187 'crawl':134 'crypto-paid endpoint' 'data':69,116 'decim':201 'detail':123 'document':124 'endpoint':36,52,80,102,203 'equal':196 'exact':177 'exampl':129 'financ':74 'form':168 'function':120 'gate':3,20 'header':154 'host':59 'infrastructur':77 'instant':146 'json-response' 'key':141 'learn':73 'limit':144 'live':162 'lowpaymentfee' 'lowpaymentfee.com':38,56 'machin':72 'mani':51 'materi':135 'maxamountrequir':191 'may':111 'model':92 'network':99 'offer':53 'one':49 'paid':9,26 'path':108 'pay':64 'pay-per-cal':63 'pay-per-call API' 'payment':118,153,172 'paywal':46 'per':11,28,65,89 'per-cal':10,27 'per-call-pricing' 'per-request':88 'platform':57,83,137 'post':205 'post-method' 'premium':4,21,40 'price':91 'process':119 'provid':39 'rate':143 'relat':112 'request':90,157,206 'request/response':125 'respons':170 'return':164,208 'schema':126 'scheme':178 'settl':93,174 'share':84 'simpli':149 'sit':104 'span':68 'specif':101 'stripe':114 'stripe charges API' 'stripe/charges':107 'suggest':109 'uniform':86 'unit':195 'usag':128 'usdc':14,31,95,186,198 'usdc-settlement' 'use':185,199 'util':78 'via':175 'web3':75 'well':167 'well-form':166 'x402':2,19,45,152,159 'x402 API' 'x402-gated':1,18 'x402-payment'","prices":[{"id":"9668eabd-9ceb-4622-81f0-66780dc6071a","listingId":"79a04794-af8c-4f59-b558-1274323bc47e","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/38","description":"Premium API Access","outputSchema":{"input":{"type":"http","method":"GET","discoverable":true}},"maxAmountRequired":"20000","maxTimeoutSeconds":300}],"asset_contract":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","max_timeout_seconds":300},"createdAt":"2026-04-18T18:54:22.252Z"}],"sources":[{"listingId":"79a04794-af8c-4f59-b558-1274323bc47e","source":"x402_bazaar","sourceId":"https://lowpaymentfee.com/api/v1/stripe/charges/38","sourceUrl":"https://api.cdp.coinbase.com/platform/v2/x402/discovery/resources","isPrimary":true,"firstSeenAt":"2026-04-18T18:54:22.252Z","lastSeenAt":"2026-04-23T00:32:07.607Z"}],"details":{"listingId":"79a04794-af8c-4f59-b558-1274323bc47e","quickStartSnippet":"curl -X POST https://lowpaymentfee.com/api/v1/stripe/charges/38 \\\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 platform advertises $0.02 per request pricing with no API keys, no rate limits, and instant access on Base network","source_url":"https://lowpaymentfee.com"},{"claim":"The x402 challenge returns maxAmountRequired of 20000 base units in USDC (asset 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913) on Base network","source_url":"https://lowpaymentfee.com/api/v1/stripe/charges/38"},{"claim":"The platform offers APIs across data & analytics, AI & ML, finance & Web3, and infrastructure categories","source_url":"https://lowpaymentfee.com"}],"useCases":["Programmatic access to a premium API endpoint without requiring API keys or account registration","Agent-driven workflows that need to pay per-call in USDC on Base","Exploring x402 protocol integration for pay-as-you-go API consumption"],"bestFor":["Developers experimenting with x402 payment protocol","Agents that can settle USDC payments on Base L2","Use cases requiring keyless, per-request API access"],"notFor":["Users who need detailed API documentation or guaranteed SLAs before integrating","High-volume consumers who prefer subscription-based pricing over per-call micropayments"],"kindDetails":{"x402_version":1,"resource_type":"http","bazaar_last_updated":"2026-02-17T23:13:55.686Z"},"updatedAt":"2026-04-23T00:32:07.607Z"}}