{"id":"ce511a3c-382b-46e5-94f1-6a73eab3134e","shortId":"xFHdNW","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/85` is 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. Payment is settled on the Base network using USDC (contract 0x8335…2913) with a maximum amount of 20,000 base units (i.e., $0.02 given USDC's 6 decimals). The payment scheme is \"exact,\" meaning each request requires a one-shot micropayment. No API keys, rate limits, or upfront commitments are required — callers simply attach an X-PAYMENT header with a valid payment proof.\n\nThe specific functionality behind `/api/v1/accounts/85` is not documented beyond the generic label \"Premium API Access.\" The provider's docs, pricing, and API pages all render only a wallet-connect prompt with no further technical detail. Without an OpenAPI spec, request/response schemas, or usage examples, it is unclear what data or service this particular endpoint returns. The broader site lists sibling endpoints for metrics, reports, sentiment analysis, summarization, geocoding, and more, but the accounts endpoint is not among those advertised on the landing page.","tags":[],"capabilities":["x402-payment","usdc-micropayment","base-network","pay-per-request","no-api-key"],"categories":["api-marketplace","payments"],"synonyms":["x402 API","micropayment API","pay-per-call API","USDC API access","Base network API","lowpaymentfee"],"warnings":["No documentation available — docs, pricing, and API pages render only a wallet-connect prompt with no content.","The specific endpoint /api/v1/accounts/85 is not listed among the provider's advertised APIs; its purpose is unknown.","No OpenAPI spec, request schema, or response schema is available.","No examples of request or response payloads could be found."],"endpointUrl":"https://lowpaymentfee.com/api/v1/accounts/85","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/85","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, but there is no documentation, no OpenAPI spec, no request/response schema, and no explanation of what /api/v1/accounts/85 actually returns. The docs, pricing, and API pages are all blank beyond a wallet-connect prompt. This is effectively a stub 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'/request':13,28 '0.02':12,27,76,111 '000':107 '0x8335':99 '20':106 '2913':100 '6':115 'Base network API' 'USDC API access' 'access':7,22,38,168 'account':227 'advertis':233 'ai':65 'among':231 'amount':104 'analysi':220 'analyt':64 'api':6,21,37,132,167,175 'attach':143 'base':9,24,94,108 'base-network' 'behind':157 'beyond':162 'broad':60 'broader':211 'call':4,19 'caller':141 'catalog':61 'challeng':88 'commit':138 'connect':183 'contract':98 'data':63,203 'decim':116 'detail':189 'doc':172 'document':161 'endpoint':32,52,80,208,215,228 'exact':121 'exampl':198 'financ':68 'function':156 'generic':164 'geocod':222 'given':112 'header':148 'host':58 'i.e':110 'infrastructur':71 'key':133 'label':165 'land':236 'learn':67 'limit':135 'list':213 'live':82 'lowpaymentfee' 'lowpaymentfee.com':34 'machin':66 'mani':51 'maximum':103 'mean':122 'metric':217 'micropay':130 'micropayment API' 'network':95 'no-api-key' 'offer':53 'one':49,128 'one-shot':127 'openapi':192 'page':176,237 'particular':207 'path':46 'pay':2,17 'pay-per-cal':1,16 'pay-per-call API' 'pay-per-request' 'payment':42,89,118,147,152 'per':3,18,77 'premium':5,20,36,166 'price':74,173 'prompt':184 'proof':153 'protocol':43 'provid':35,56,170 'rate':134 'render':178 'report':218 'request':78,124 'request/response':194 'requir':125,140 'return':84,209 'schema':195 'scheme':119 'sentiment':219 'servic':205 'settl':91 'shot':129 'sibl':214 'simpli':142 'site':212 'span':62 'spec':193 'specif':45,155 'summar':221 'technic':188 'unclear':201 'unit':109 'upfront':137 'usag':197 'usdc':15,30,97,113 'usdc-micropayment' 'use':96 'util':72 'valid':86,151 'via':10,25,39 'wallet':182 'wallet-connect':181 'web3':69 'without':190 'x':146 'x-payment':145 'x402':11,26,41,87 'x402 API' 'x402-payment'","prices":[{"id":"5b4ec4b3-a0df-4391-8d84-cbf8bf3dddd9","listingId":"ce511a3c-382b-46e5-94f1-6a73eab3134e","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/85","description":"Premium API Access","outputSchema":{"input":{"type":"http","method":"GET","discoverable":true}},"maxAmountRequired":"20000","maxTimeoutSeconds":300}],"asset_contract":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","max_timeout_seconds":300},"createdAt":"2026-04-18T18:40:14.617Z"}],"sources":[{"listingId":"ce511a3c-382b-46e5-94f1-6a73eab3134e","source":"x402_bazaar","sourceId":"https://lowpaymentfee.com/api/v1/accounts/85","sourceUrl":"https://api.cdp.coinbase.com/platform/v2/x402/discovery/resources","isPrimary":true,"firstSeenAt":"2026-04-18T18:40:14.617Z","lastSeenAt":"2026-04-23T07:30:56.299Z"}],"details":{"listingId":"ce511a3c-382b-46e5-94f1-6a73eab3134e","quickStartSnippet":"# Requires an x402-compatible client that can sign USDC payments on Base\ncurl -X POST https://lowpaymentfee.com/api/v1/accounts/85 \\\n  -H \"Content-Type: application/json\" \\\n  -H \"X-PAYMENT: <x402_payment_proof>\"","exampleRequest":null,"exampleResponse":null,"schema":{"input":{"type":"http","method":"GET","discoverable":true}},"openapiUrl":null,"agentsTxtUrl":null,"citations":[{"claim":"The provider lists APIs across data & analytics, AI & ML, finance & Web3, and infrastructure, all priced at $0.02/request.","source_url":"https://lowpaymentfee.com"},{"claim":"Pricing is $0.02 per request with no API keys, no rate limits, and instant access on the Base network.","source_url":"https://lowpaymentfee.com"},{"claim":"The x402 challenge specifies maxAmountRequired of 20000 base units of USDC (6 decimals = $0.02) on Base.","source_url":"https://lowpaymentfee.com/api/v1/accounts/85"},{"claim":"The USDC asset contract is 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913 on Base.","source_url":"https://lowpaymentfee.com/api/v1/accounts/85"}],"useCases":["Accessing premium data or services with per-request USDC micropayments on Base","Agent-driven API consumption without pre-registration or API keys","Programmatic pay-as-you-go access to account-level data"],"bestFor":["Developers wanting zero-commitment, pay-per-use API access","AI agents that can settle x402 payments autonomously","Users who prefer crypto micropayments over subscription billing"],"notFor":["Users needing detailed documentation or guaranteed SLAs before integrating","Anyone without a Base-compatible USDC wallet or x402 client","High-volume consumers who need bulk pricing or rate-limit guarantees"],"kindDetails":{"x402_version":1,"resource_type":"http","bazaar_last_updated":"2026-02-17T23:14:36.733Z"},"updatedAt":"2026-04-23T07:30:56.299Z"}}