{"id":"94a7e714-c0a7-4d71-9d29-64ecdd0eb087","shortId":"r4csDB","kind":"x402","title":"x402-gated premium API endpoint on Base, payable in USDC at $0.02 per request.","tagline":"x402-gated premium API endpoint on Base, payable in USDC at $0.02 per request.","description":"This endpoint at lowpaymentfee.com provides \"Premium API Access\" behind an x402 payment wall. It is one of many endpoints offered by the lowpaymentfee.com platform, which hosts a collection of APIs spanning data & analytics, AI & machine learning, finance & Web3, and infrastructure utilities — all priced at $0.02 per request with no API keys, no rate limits, and no commitments required.\n\nThe specific endpoint `/api/v1/stripe/charges/27` accepts POST requests and settles payments in USDC on the Base network using the x402 exact payment scheme. The x402 challenge confirms the endpoint is live, advertising a maxAmountRequired of 20,000 base units of USDC (which, at 6 decimals, equals $0.02). Payment is sent to address `0x1A2B13E97f5F837C8F9FA1F95a1484B7C70d85F3` with a timeout of 300 seconds.\n\nHowever, the exact functionality behind this particular endpoint path (`/stripe/charges/27`) is unclear. The provider's landing page lists many categorized APIs (metrics, reports, sentiment analysis, summarization, etc.) but does not specifically describe what `/api/v1/stripe/charges/27` returns. Documentation pages (`/docs`, `/pricing`, `/api`, `/README`) all render only a \"Connect wallet\" prompt with no substantive content. Without further documentation or example responses, the precise data or service delivered by this endpoint cannot be confirmed.","tags":[],"capabilities":["x402-payment","usdc-settlement","base-network","post-method","pay-per-request","no-api-key"],"categories":["api-gateway","payments"],"synonyms":["lowpaymentfee","x402 api","pay-per-call api","USDC micropayment API","Base network API","stripe charges endpoint","premium api access"],"warnings":["The exact functionality of /api/v1/stripe/charges/27 is undocumented and unclear","All documentation pages (/docs, /pricing, /api, /README) contain only a 'Connect wallet' prompt with no substantive content","No OpenAPI spec, request schema, or response schema is available","No example responses are available to verify what data this endpoint returns"],"endpointUrl":"https://lowpaymentfee.com/api/v1/stripe/charges/27","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/27","description":"Premium API Access","outputSchema":{"input":{"type":"http","method":"GET","discoverable":true}},"maxAmountRequired":"20000","maxTimeoutSeconds":300}]},"qualityScore":"0.300","qualityRationale":"The x402 challenge is live and pricing is clear ($0.02 USDC on Base), but there is no documentation, no OpenAPI schema, no example requests or responses, and the specific purpose of the `/stripe/charges/27` path is unexplained. The docs, pricing, API, and README pages all render only a wallet-connect prompt with no useful 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'/api/v1/stripe/charges/27':92,180 '/docs':184 '/pricing':185 '/readme':187 '/stripe/charges/27':156 '0.02':13,28,75,134 '000':124 '0x1a2b13e97f5f837c8f9fa1f95a1484b7c70d85f3':140 '20':123 '300':145 '6':131 'Base network API' 'USDC micropayment API' 'accept':93 'access':38 'address':139 'advertis':119 'ai':64 'analysi':171 'analyt':63 'api':5,20,37,60,80,167 'base':8,23,103,125 'base-network' 'behind':39,151 'cannot':214 'categor':166 'challeng':113 'collect':58 'commit':87 'confirm':114,216 'connect':192 'content':198 'data':62,207 'decim':132 'deliv':210 'describ':178 'document':182,201 'endpoint':6,21,32,49,91,116,154,213 'equal':133 'etc':173 'exact':108,149 'exampl':203 'financ':67 'function':150 'gate':3,18 'host':56 'howev':147 'infrastructur':70 'key':81 'land':162 'learn':66 'limit':84 'list':164 'live':118 'lowpaymentfee' 'lowpaymentfee.com':34,53 'machin':65 'mani':48,165 'maxamountrequir':121 'metric':168 'network':104 'no-api-key' 'offer':50 'one':46 'page':163,183 'particular':153 'path':155 'pay-per-call api' 'pay-per-request' 'payabl':9,24 'payment':42,98,109,135 'per':14,29,76 'platform':54 'post':94 'post-method' 'precis':206 'premium':4,19,36 'premium api access' 'price':73 'prompt':194 'provid':35,160 'rate':83 'render':189 'report':169 'request':15,30,77,95 'requir':88 'respons':204 'return':181 'scheme':110 'second':146 'sent':137 'sentiment':170 'servic':209 'settl':97 'span':61 'specif':90,177 'stripe charges endpoint' 'substant':197 'summar':172 'timeout':143 'unclear':158 'unit':126 'usdc':11,26,100,128 'usdc-settlement' 'use':105 'util':71 'wall':43 'wallet':193 'web3':68 'without':199 'x402':2,17,41,107,112 'x402 api' 'x402-gated':1,16 'x402-payment'","prices":[{"id":"7365880a-24bd-46a0-923f-d26b88cbc081","listingId":"94a7e714-c0a7-4d71-9d29-64ecdd0eb087","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/27","description":"Premium API Access","outputSchema":{"input":{"type":"http","method":"GET","discoverable":true}},"maxAmountRequired":"20000","maxTimeoutSeconds":300}],"asset_contract":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","max_timeout_seconds":300},"createdAt":"2026-04-18T18:54:24.067Z"}],"sources":[{"listingId":"94a7e714-c0a7-4d71-9d29-64ecdd0eb087","source":"x402_bazaar","sourceId":"https://lowpaymentfee.com/api/v1/stripe/charges/27","sourceUrl":"https://api.cdp.coinbase.com/platform/v2/x402/discovery/resources","isPrimary":true,"firstSeenAt":"2026-04-18T18:54:24.067Z","lastSeenAt":"2026-04-23T00:32:07.641Z"}],"details":{"listingId":"94a7e714-c0a7-4d71-9d29-64ecdd0eb087","quickStartSnippet":"curl -X POST https://lowpaymentfee.com/api/v1/stripe/charges/27 \\\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 with maxAmountRequired of 20000 base units of USDC on Base network","source_url":"https://lowpaymentfee.com/api/v1/stripe/charges/27"},{"claim":"The platform advertises $0.02 per request pricing with no API keys, no rate limits, and instant access","source_url":"https://lowpaymentfee.com"},{"claim":"The USDC asset contract on Base is 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","source_url":"https://lowpaymentfee.com/api/v1/stripe/charges/27"},{"claim":"Documentation pages render only a Connect wallet prompt","source_url":"https://lowpaymentfee.com/docs"}],"useCases":["Programmatic access to a paid API endpoint without traditional API key management","Agent-driven workflows that need to pay per request using USDC on Base","Testing x402 payment protocol integrations against a live endpoint"],"bestFor":["Developers experimenting with x402 payment protocol","Agents that can settle USDC payments on Base L2","Use cases requiring keyless, pay-per-call API access"],"notFor":["Users who need detailed API documentation or guaranteed SLAs","Anyone requiring free or fiat-only payment methods","Production workloads needing well-documented response schemas"],"kindDetails":{"x402_version":1,"resource_type":"http","bazaar_last_updated":"2026-02-17T23:13:55.615Z"},"updatedAt":"2026-04-23T00:32:07.641Z"}}