{"id":"51199508-0fe6-4c81-8144-d03ee4d8bf63","shortId":"EdBxUp","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/92` appears to be one of many endpoints offered by the provider, which hosts 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 max 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 instant 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 further content. There is no OpenAPI spec, no request/response schema, and no description of what the `/api/v1/accounts/92` endpoint specifically returns. The landing page lists many sibling endpoints but does not describe this particular one beyond the generic label \"Premium API Access.\" Without documentation or example responses, the actual functionality of this specific endpoint remains unclear.","tags":[],"capabilities":["x402-payment","usdc-settlement","base-network","pay-per-request","no-api-key","json-response"],"categories":["api","infrastructure"],"synonyms":["lowpaymentfee","low payment fee API","x402 API","pay-per-call API","USDC API access","Base network API","micropayment API"],"warnings":["No documentation available — docs, pricing, API, and README pages all show only 'Connect wallet'","No OpenAPI or output schema provided; the actual response format is unknown","The specific purpose of /api/v1/accounts/92 is undocumented — 'Premium API Access' is a generic label","No example requests or responses available"],"endpointUrl":"https://lowpaymentfee.com/api/v1/accounts/92","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/92","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 402 challenge, confirming pricing and payment details. However, there is no OpenAPI spec, no documentation, no request/response schema, and no description of what this specific endpoint actually does. The docs pages are empty beyond a wallet-connect prompt. This is effectively a stub 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'/request':13,28 '0.02':12,27,78,125 '000':115 '0x8335':99 '20':114 '2913':100 '300':143 '6':120 'Base network API' 'USDC API access' 'access':7,22,38,134,205 'actual':212 'advertis':133 'ai':67 'amount':111 'analyt':66 'api':6,21,37,127,152,204 'appear':48 'base':9,24,103,116 'base-network' 'beyond':199 'broad':62 'call':4,19 'catalog':63 'challeng':90 'connect':160 'content':166 'contract':98 'data':65 'decim':121 'describ':195 'descript':177 'doc':150 'document':145,207 'endpoint':32,54,82,182,191,217 'equal':124 'exact':107 'exampl':209 'extrem':147 'financ':70 'function':213 'generic':201 'host':60 'infrastructur':73 'instant':136 'json-response' 'key':128 'label':202 'land':186 'learn':69 'limit':131 'list':188 'live':84 'low payment fee API' 'lowpaymentfee' 'lowpaymentfee.com':34 'machin':68 'mani':53,189 'max':110 'micropayment API' 'network':104 'no-api-key' 'offer':55 'one':51,198 'openapi':170 'page':155,187 'particular':197 'path':46 'pay':2,17 'pay-per-cal':1,16 'pay-per-call API' 'pay-per-request' 'payment':42,93,138 'per':3,18,79 'post':92 'premium':5,20,36,203 'price':76,151 'prompt':162 'protocol':43 'provid':35,58 'rate':130 'readm':154 'remain':218 'render':157 'request':80 'request/response':173 'requir':112 'respons':210 'return':86,184 'schema':174 'scheme':108 'second':144 'settl':95 'sibl':190 'span':64 'spars':148 'spec':171 'specif':45,183,216 'timeout':140 'unclear':219 'unit':117 'upon':137 'usdc':15,30,97,123 'usdc-settlement' 'use':105 'util':74 'valid':88 'via':10,25,39 'wallet':161 'web3':71 'window':141 'without':206 'x402':11,26,41,89 'x402 API' 'x402-payment'","prices":[{"id":"7783fedc-a660-41e0-b8ba-2af39e6d70ca","listingId":"51199508-0fe6-4c81-8144-d03ee4d8bf63","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/92","description":"Premium API Access","outputSchema":{"input":{"type":"http","method":"GET","discoverable":true}},"maxAmountRequired":"20000","maxTimeoutSeconds":300}],"asset_contract":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","max_timeout_seconds":300},"createdAt":"2026-04-18T18:40:19.535Z"}],"sources":[{"listingId":"51199508-0fe6-4c81-8144-d03ee4d8bf63","source":"x402_bazaar","sourceId":"https://lowpaymentfee.com/api/v1/accounts/92","sourceUrl":"https://api.cdp.coinbase.com/platform/v2/x402/discovery/resources","isPrimary":true,"firstSeenAt":"2026-04-18T18:40:19.535Z","lastSeenAt":"2026-04-22T16:30:56.825Z"}],"details":{"listingId":"51199508-0fe6-4c81-8144-d03ee4d8bf63","quickStartSnippet":"curl -X POST https://lowpaymentfee.com/api/v1/accounts/92 \\\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 valid x402 challenge with maxAmountRequired of 20000 base units in USDC on Base","source_url":"https://lowpaymentfee.com/api/v1/accounts/92"},{"claim":"All endpoints are priced at $0.02 per request 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/92"}],"useCases":["Accessing premium data or services with per-request USDC micropayments","Agent-driven API consumption without pre-registration or API keys","Programmatic pay-as-you-go access to various utility endpoints"],"bestFor":["Developers wanting zero-commitment, pay-per-use API access","AI agents that can settle x402 payments autonomously on Base","Users who prefer crypto micropayments over subscription billing"],"notFor":["Users who need detailed API documentation or schemas before integrating","High-volume consumers who would benefit from bulk pricing or subscriptions","Anyone unable to pay in USDC on the Base network"],"kindDetails":{"x402_version":1,"resource_type":"http","bazaar_last_updated":"2026-02-17T23:14:36.487Z"},"updatedAt":"2026-04-22T16:30:56.825Z"}}