{"id":"966f5350-aef4-40cc-826c-7d6f8a757436","shortId":"8dUZaU","kind":"x402","title":"Pay-per-call premium API endpoint on Base via x402 — $0.02/request in USDC.","tagline":"Pay-per-call premium API endpoint on Base via x402 — $0.02/request in USDC.","description":"This endpoint at `/api/endpoint-95` is part of the lowpaymentfee.com platform, which offers a collection of pay-per-request APIs spanning data & analytics, AI & machine learning, finance & Web3, and infrastructure utilities. All endpoints use the x402 payment protocol, settling in USDC on the Base network. The platform advertises a flat $0.02 per request with no API keys, no rate limits, and instant access.\n\nThe specific endpoint `/api/endpoint-95` is labeled \"Premium API Access\" but its exact functionality is not documented beyond that generic title. The x402 challenge confirms it is live, accepts POST requests, and requires payment of up to 20,000 base units of USDC (0x8335…2913 on Base), which equals $0.02 given USDC's 6 decimals. Payment is sent to address 0x1A2B13E97f5F837C8F9FA1F95a1484B7C70d85F3 with a 300-second timeout. The response MIME type is application/json.\n\nNote that while the platform's homepage lists many categorized endpoints (analytics, AI, finance, utilities), this particular endpoint path (`/api/endpoint-95`) does not appear among them, and no documentation describes what it returns. The docs, pricing, and API pages all render only a \"Connect wallet\" prompt with no further content. Treat this as a stub listing until more documentation becomes available.","tags":[],"capabilities":["x402-payment","usdc-base","pay-per-request","json-response","post-method"],"categories":["general","api-marketplace"],"synonyms":["lowpaymentfee","low payment fee API","x402 API","USDC micropayment API","Base network API","pay-per-call API"],"warnings":["Endpoint path /api/endpoint-95 is not listed among the platform's documented APIs","No documentation, schema, or example responses available for this specific endpoint","Docs, pricing, and API pages render only 'Connect wallet' with no usable content","Exact functionality of this endpoint is unknown"],"endpointUrl":"https://lowpaymentfee.com/api/endpoint-95","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/endpoint-95","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 schema, no example responses, and the endpoint path does not match any of the listed APIs on the homepage. The generic title 'Premium API Access' gives no indication of what the endpoint actually does. This is effectively a 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'/request':13,28 '0.02':12,27,81,142 '000':131 '0x1a2b13e97f5f837c8f9fa1f95a1484b7c70d85f3':153 '0x8335':136 '20':130 '2913':137 '300':156 '6':146 'Base network API' 'USDC micropayment API' 'accept':121 'access':93,102 'address':152 'advertis':78 'ai':54,177 'among':188 'analyt':53,176 'api':6,21,50,86,101,201 'appear':187 'application/json':164 'avail':224 'base':9,24,74,132,139 'becom':223 'beyond':110 'call':4,19 'categor':174 'challeng':116 'collect':44 'confirm':117 'connect':207 'content':213 'data':52 'decim':147 'describ':193 'doc':198 'document':109,192,222 'endpoint':7,22,32,63,96,175,182 'equal':141 'exact':105 'financ':57,178 'flat':80 'function':106 'generic':112 'given':143 'homepag':171 'infrastructur':60 'instant':92 'json-response' 'key':87 'label':99 'learn':56 'limit':90 'list':172,219 'live':120 'low payment fee API' 'lowpaymentfee' 'lowpaymentfee.com':39 'machin':55 'mani':173 'mime':161 'network':75 'note':165 'offer':42 'page':202 'part':36 'particular':181 'path':183 'pay':2,17,47 'pay-per-cal':1,16 'pay-per-call API' 'pay-per-request':46 'payment':67,126,148 'per':3,18,48,82 'platform':40,77,169 'post':122 'post-method' 'premium':5,20,100 'price':199 'prompt':209 'protocol':68 'rate':89 'render':204 'request':49,83,123 'requir':125 'respons':160 'return':196 'second':157 'sent':150 'settl':69 'span':51 'specif':95 'stub':218 'timeout':158 'titl':113 'treat':214 'type':162 'unit':133 'usdc':15,30,71,135,144 'usdc-base' 'use':64 'util':61,179 'via':10,25 'wallet':208 'web3':58 'x402':11,26,66,115 'x402 API' 'x402-payment'","prices":[{"id":"cea62858-433c-4020-b797-69d16930c59a","listingId":"966f5350-aef4-40cc-826c-7d6f8a757436","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/endpoint-95","description":"Premium API Access","outputSchema":{"input":{"type":"http","method":"GET","discoverable":true}},"maxAmountRequired":"20000","maxTimeoutSeconds":300}],"asset_contract":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","max_timeout_seconds":300},"createdAt":"2026-04-18T18:36:31.287Z"}],"sources":[{"listingId":"966f5350-aef4-40cc-826c-7d6f8a757436","source":"x402_bazaar","sourceId":"https://lowpaymentfee.com/api/endpoint-95","sourceUrl":"https://api.cdp.coinbase.com/platform/v2/x402/discovery/resources","isPrimary":true,"firstSeenAt":"2026-04-18T18:36:31.287Z","lastSeenAt":"2026-04-22T13:30:31.257Z"}],"details":{"listingId":"966f5350-aef4-40cc-826c-7d6f8a757436","quickStartSnippet":"curl -X POST https://lowpaymentfee.com/api/endpoint-95 \\\n  -H \"Content-Type: application/json\" \\\n  -H \"X-PAYMENT: <x402-payment-header>\" \\\n  -d '{}'","exampleRequest":{"url":"https://lowpaymentfee.com/api/endpoint-95","body":{},"method":"POST","headers":{"X-PAYMENT":"<x402-payment-header>","Content-Type":"application/json"}},"exampleResponse":null,"schema":{"input":{"type":"http","method":"GET","discoverable":true}},"openapiUrl":null,"agentsTxtUrl":null,"citations":[{"claim":"The platform advertises $0.02 per request with no API keys, no rate limits, and instant access on Base network","source_url":"https://lowpaymentfee.com"},{"claim":"The x402 challenge shows maxAmountRequired of 20000 base units of USDC on Base with a 300-second timeout","source_url":"https://lowpaymentfee.com/api/endpoint-95"},{"claim":"USDC contract address on Base is 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","source_url":"https://lowpaymentfee.com/api/endpoint-95"}],"useCases":["Programmatic access to a premium API endpoint with per-call USDC micropayments","Agent-driven workflows that need keyless, on-demand API access on Base","Testing x402 payment protocol integrations against a live endpoint"],"bestFor":["Developers experimenting with x402 payment flows","Agents that need keyless pay-per-use API access","Low-volume consumers who want no subscription commitment"],"notFor":["Users who need clearly documented endpoint behavior before paying","High-volume production workloads requiring SLAs and support","Anyone without a Base-network USDC wallet"],"kindDetails":{"x402_version":1,"resource_type":"http","bazaar_last_updated":"2026-02-17T23:14:47.513Z"},"updatedAt":"2026-04-22T13:30:31.257Z"}}