{"id":"a8e56e8a-b4d0-4e46-affd-19d011ae5ae0","shortId":"V6KXMJ","kind":"x402","title":"x402-gated premium API access on Base, paid per-call in USDC.","tagline":"x402-gated premium API access on Base, paid per-call in USDC.","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 variety of APIs spanning data & analytics, AI & machine learning, finance & Web3, and infrastructure utilities. All endpoints on the platform follow the same model: no API keys, no rate limits, pay-per-request via USDC on the Base network using the x402 protocol.\n\nThe specific endpoint `/api/v1/stripe/charges/78` sits under a path suggesting Stripe charge-related functionality, but the platform's own description labels it simply \"Premium API Access\" with no further detail on what data or action it returns. The x402 challenge confirms the endpoint is live, accepts POST requests, and requires payment of up to 20,000 base units of USDC (0.02 USD) per call, settled on Base to address 0x1A2B13E97f5F837C8F9FA1F95a1484B7C70d85F3.\n\nDocumentation is extremely sparse. The /docs, /pricing, /api, and /README pages all render only a \"Connect wallet\" prompt with no additional content. There is no OpenAPI spec, no request/response schema, and no examples available. The exact functionality behind this particular endpoint cannot be determined from the available material.","tags":[],"capabilities":["x402-payment","usdc-base","pay-per-request","no-api-key","post-endpoint"],"categories":["payments","misc"],"synonyms":["lowpaymentfee","x402 api","usdc api access","base network api","pay-per-call api","stripe charges api","micropayment api"],"warnings":["No documentation available — /docs, /pricing, /api, and /README pages all show only 'Connect wallet'","No OpenAPI or schema describing request parameters or response format","The exact functionality of /api/v1/stripe/charges/78 is unclear from available material","No examples or sample responses available"],"endpointUrl":"https://lowpaymentfee.com/api/v1/stripe/charges/78","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/78","description":"Premium API Access","outputSchema":{"input":{"type":"http","method":"GET","discoverable":true}},"maxAmountRequired":"20000","maxTimeoutSeconds":300}]},"qualityScore":"0.250","qualityRationale":"The endpoint is live and returns a valid x402 challenge, but there is no documentation, no OpenAPI spec, no request/response schema, and no examples. The actual functionality behind 'Premium API Access' at this specific path is unknown. This is effectively a stub 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'/api/v1/stripe/charges/78':101 '/docs':173 '/pricing':174 '/readme':177 '0.02':158 '000':153 '0x1a2b13e97f5f837c8f9fa1f95a1484b7c70d85f3':167 '20':152 'accept':143 'access':6,20,36,123 'action':132 'addit':188 'address':166 'ai':61 'analyt':60 'api':5,19,35,57,79,122 'avail':201,214 'base':8,22,92,154,164 'base network api' 'behind':37,205 'call':12,26,161 'cannot':209 'challeng':137 'charg':109 'charge-rel':108 'confirm':138 'connect':183 'content':189 'data':59,130 'descript':117 'detail':127 'determin':211 'document':168 'endpoint':30,46,70,100,140,208 'exact':203 'exampl':200 'extrem':170 'financ':64 'follow':74 'function':111,204 'gate':3,17 'host':53 'infrastructur':67 'key':80 'label':118 'learn':63 'limit':83 'live':142 'lowpaymentfee' 'lowpaymentfee.com':32,50 'machin':62 'mani':45 'materi':215 'micropayment api' 'model':77 'network':93 'no-api-key' 'offer':47 'one':43 'openapi':193 'page':178 'paid':9,23 'particular':207 'path':105 'pay':85 'pay-per-call api' 'pay-per-request':84 'payment':148 'paywal':40 'per':11,25,86,160 'per-cal':10,24 'platform':51,73,114 'post':144 'post-endpoint' 'premium':4,18,34,121 'prompt':185 'protocol':97 'provid':33 'rate':82 'relat':110 'render':180 'request':87,145 'request/response':196 'requir':147 'return':134 'schema':197 'settl':162 'simpli':120 'sit':102 'span':58 'spars':171 'spec':194 'specif':99 'stripe':107 'stripe charges api' 'suggest':106 'unit':155 'usd':159 'usdc':14,28,89,157 'usdc api access' 'usdc-base' 'use':94 'util':68 'varieti':55 'via':88 'wallet':184 'web3':65 'x402':2,16,39,96,136 'x402 api' 'x402-gated':1,15 'x402-payment'","prices":[{"id":"0c53a4c1-d8a0-4f4c-b9c1-f2077a38606c","listingId":"a8e56e8a-b4d0-4e46-affd-19d011ae5ae0","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/78","description":"Premium API Access","outputSchema":{"input":{"type":"http","method":"GET","discoverable":true}},"maxAmountRequired":"20000","maxTimeoutSeconds":300}],"asset_contract":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","max_timeout_seconds":300},"createdAt":"2026-04-18T18:54:33.687Z"}],"sources":[{"listingId":"a8e56e8a-b4d0-4e46-affd-19d011ae5ae0","source":"x402_bazaar","sourceId":"https://lowpaymentfee.com/api/v1/stripe/charges/78","sourceUrl":"https://api.cdp.coinbase.com/platform/v2/x402/discovery/resources","isPrimary":true,"firstSeenAt":"2026-04-18T18:54:33.687Z","lastSeenAt":"2026-04-22T05:31:28.795Z"}],"details":{"listingId":"a8e56e8a-b4d0-4e46-affd-19d011ae5ae0","quickStartSnippet":"curl -X POST https://lowpaymentfee.com/api/v1/stripe/charges/78 \\\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 of USDC on Base","source_url":"https://lowpaymentfee.com/api/v1/stripe/charges/78"},{"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":"USDC asset contract on Base is 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","source_url":"https://lowpaymentfee.com/api/v1/stripe/charges/78"}],"useCases":["Programmatic access to a premium API endpoint without needing API keys or subscriptions","Agent-driven workflows that pay per-call in USDC on Base","Testing x402 payment flows against a live endpoint"],"bestFor":["Developers experimenting with x402 payment protocol","Agents that can settle USDC payments on Base","Users who want keyless, pay-as-you-go API access"],"notFor":["Users who need detailed documentation or guaranteed SLAs","Anyone requiring free or fiat-only payment methods","Production workloads that depend on well-documented request/response schemas"],"kindDetails":{"x402_version":1,"resource_type":"http","bazaar_last_updated":"2026-02-17T23:13:55.121Z"},"updatedAt":"2026-04-22T05:31:28.795Z"}}