{"id":"50563abe-e7e6-45c6-886f-873e748fa03d","shortId":"BH2zkt","kind":"x402","title":"Pay-per-call premium API access on Base via x402 — $0.02/request in USDC.","tagline":"Pay-per-call premium API access on Base via x402 — $0.02/request in USDC.","description":"This endpoint at lowpaymentfee.com provides \"Premium API Access\" via the x402 payment protocol. The specific path `/api/v1/accounts/94` appears to be one of many endpoints offered by the platform, which advertises a broad catalog spanning data & analytics, AI & machine learning, finance & Web3, and infrastructure utilities — all priced at $0.02 per request.\n\nThe endpoint is live and returns a valid x402 challenge on POST. Payment is settled in USDC (contract 0x8335…2913) on the Base network using the \"exact\" scheme. The maximum amount required is 20,000 base units, which at 6 decimals for USDC equals $0.02. No API keys or rate limits are advertised; access is granted per-call upon payment. The timeout window is 300 seconds.\n\nDocumentation is extremely sparse. The docs, pricing, API, and README pages all render only a \"Connect wallet\" prompt with no additional technical detail. There is no OpenAPI spec, no request/response schema, and no usage examples. The specific purpose of the `/api/v1/accounts/94` path (as opposed to the other listed endpoints like analytics, AI, or finance) is not documented. Prospective users should be aware that the actual functionality behind this endpoint is unclear from available materials.","tags":[],"capabilities":["x402-payment","usdc-settlement","base-network","pay-per-request","no-api-key","json-response"],"categories":["api","infrastructure"],"synonyms":["premium API","pay-per-call API","x402 endpoint","USDC API access","lowpaymentfee","Base network API","micropayment API"],"warnings":["The specific functionality of /api/v1/accounts/94 is not documented anywhere in the crawled material.","All documentation pages (docs, pricing, API, README) render only 'Connect wallet' with no technical content.","No OpenAPI spec or request/response schema is available.","The platform lists many endpoints but provides no detail on inputs, outputs, or error handling for any of them."],"endpointUrl":"https://lowpaymentfee.com/api/v1/accounts/94","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/accounts/94","description":"Premium API Access","outputSchema":{"input":{"type":"http","method":"GET","discoverable":true}},"maxAmountRequired":"20000","maxTimeoutSeconds":300}]},"qualityScore":"0.300","qualityRationale":"The endpoint is live and returns a valid x402 challenge with clear pricing ($0.02 USDC on Base). However, there is no documentation, no OpenAPI spec, no request/response examples, and the specific functionality of /api/v1/accounts/94 is entirely undocumented. The docs pages are empty beyond a wallet connect 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'/request':13,28 '0.02':12,27,78,125 '000':115 '0x8335':99 '20':114 '2913':100 '300':146 '6':120 'Base network API' 'USDC API access' 'access':7,22,38,134 'actual':212 'addit':168 'advertis':60,133 'ai':67,199 'amount':111 'analyt':66,198 'api':6,21,37,127,155 'appear':48 'avail':220 'awar':209 'base':9,24,103,116 'base-network' 'behind':214 'broad':62 'call':4,19,139 'catalog':63 'challeng':90 'connect':163 'contract':98 'data':65 'decim':121 'detail':170 'doc':153 'document':148,204 'endpoint':32,54,82,196,216 'equal':124 'exact':107 'exampl':182 'extrem':150 'financ':70,201 'function':213 'grant':136 'infrastructur':73 'json-response' 'key':128 'learn':69 'like':197 'limit':131 'list':195 'live':84 'lowpaymentfee' 'lowpaymentfee.com':34 'machin':68 'mani':53 'materi':221 'maximum':110 'micropayment API' 'network':104 'no-api-key' 'offer':55 'one':51 'openapi':174 'oppos':191 'page':158 'path':46,189 'pay':2,17 'pay-per-cal':1,16 'pay-per-call API' 'pay-per-request' 'payment':42,93,141 'per':3,18,79,138 'per-cal':137 'platform':58 'post':92 'premium':5,20,36 'premium API' 'price':76,154 'prompt':165 'prospect':205 'protocol':43 'provid':35 'purpos':185 'rate':130 'readm':157 'render':160 'request':80 'request/response':177 'requir':112 'return':86 'schema':178 'scheme':108 'second':147 'settl':95 'span':64 'spars':151 'spec':175 'specif':45,184 'technic':169 'timeout':143 'unclear':218 'unit':117 'upon':140 'usag':181 'usdc':15,30,97,123 'usdc-settlement' 'use':105 'user':206 'util':74 'valid':88 'via':10,25,39 'wallet':164 'web3':71 'window':144 'x402':11,26,41,89 'x402 endpoint' 'x402-payment'","prices":[{"id":"e82110dd-a02a-485f-b396-f43ac10c4586","listingId":"50563abe-e7e6-45c6-886f-873e748fa03d","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/accounts/94","description":"Premium API Access","outputSchema":{"input":{"type":"http","method":"GET","discoverable":true}},"maxAmountRequired":"20000","maxTimeoutSeconds":300}],"asset_contract":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","max_timeout_seconds":300},"createdAt":"2026-04-18T18:40:23.121Z"}],"sources":[{"listingId":"50563abe-e7e6-45c6-886f-873e748fa03d","source":"x402_bazaar","sourceId":"https://lowpaymentfee.com/api/v1/accounts/94","sourceUrl":"https://api.cdp.coinbase.com/platform/v2/x402/discovery/resources","isPrimary":true,"firstSeenAt":"2026-04-18T18:40:23.121Z","lastSeenAt":"2026-04-22T16:30:57.216Z"}],"details":{"listingId":"50563abe-e7e6-45c6-886f-873e748fa03d","quickStartSnippet":"curl -X POST https://lowpaymentfee.com/api/v1/accounts/94 \\\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":"Endpoint returns a valid x402 challenge with maxAmountRequired of 20000 base units in USDC on Base","source_url":"https://lowpaymentfee.com/api/v1/accounts/94"},{"claim":"Platform advertises $0.02 per request pricing with no API keys, no rate limits, and instant access","source_url":"https://lowpaymentfee.com"},{"claim":"USDC asset contract is 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913 on Base network","source_url":"https://lowpaymentfee.com/api/v1/accounts/94"},{"claim":"Docs, pricing, API, and README pages show only 'Connect wallet' with no further content","source_url":"https://lowpaymentfee.com/docs"}],"useCases":["Accessing premium API data without subscription or API key management","Agent-driven per-call API consumption settled in USDC on Base","Programmatic access to account-level data via x402 payment protocol"],"bestFor":["Developers wanting zero-signup, pay-per-use API access","AI agents that can settle x402 payments autonomously on Base","Users who prefer crypto micropayments over traditional billing"],"notFor":["Users needing detailed API documentation or OpenAPI specs before integration","High-volume consumers who would benefit from bulk pricing or subscriptions","Anyone requiring non-crypto payment methods"],"kindDetails":{"x402_version":1,"resource_type":"http","bazaar_last_updated":"2026-02-17T23:14:36.395Z"},"updatedAt":"2026-04-22T16:30:57.216Z"}}