{"id":"6ee095ea-d383-445d-a55b-0087f5852258","shortId":"2L83bD","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/65` 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 accepts POST requests and returns JSON. Payment is settled on the Base network using USDC (contract 0x8335…2913) with a maximum amount of 20,000 base units, which equals $0.02 (USDC uses 6 decimals). There are no API keys, no rate limits, and no minimum commitments — callers simply attach an x402 payment header to each request. The x402 challenge was confirmed live, returning a proper 402 response with version 1 of the protocol and a 300-second payment timeout.\n\nThe exact functionality of the `/api/v1/accounts/65` path is not documented beyond the label \"Premium API Access.\" The provider's docs, pricing, and API pages all render only a wallet-connect prompt with no additional technical documentation or schema details. Without further information it is unclear what data or service this specific account endpoint returns. The broader site advertises endpoints for metrics, reports, sentiment analysis, text summarization, classification, embeddings, price feeds, exchange rates, geocoding, validation, conversion, and generation — all at the same $0.02 price point.","tags":[],"capabilities":["x402-payment","usdc-base-network","pay-per-request","json-response","post-method","no-api-key","no-rate-limit"],"categories":["api","infrastructure"],"synonyms":["premium API","pay-per-call API","x402 endpoint","USDC micropayment API","lowpaymentfee","Base network API","accounts endpoint"],"warnings":["No documentation available — docs, pricing, and API pages only show a wallet-connect prompt","The specific functionality of /api/v1/accounts/65 ('Premium API Access') is undocumented","No request or response schema provided; input/output format is unknown","No OpenAPI spec or AI plugin manifest found"],"endpointUrl":"https://lowpaymentfee.com/api/v1/accounts/65","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/65","description":"Premium API Access","outputSchema":{"input":{"type":"http","method":"GET","discoverable":true}},"maxAmountRequired":"20000","maxTimeoutSeconds":300}]},"qualityScore":"0.350","qualityRationale":"The x402 challenge is live and pricing is clear ($0.02 USDC on Base), but there is no documentation, no request/response schema, and no explanation of what the /api/v1/accounts/65 endpoint actually returns. The docs, pricing, and API pages all render only a wallet-connect prompt with no useful 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'/request':13,28 '0.02':12,27,76,110,242 '000':105 '0x8335':97 '1':150 '20':104 '2913':98 '300':156 '402':146 '6':113 'Base network API' 'USDC micropayment API' 'accept':81 'access':7,22,38,175 'account':212 'accounts endpoint' 'addit':194 'advertis':218 'ai':65 'amount':102 'analysi':224 'analyt':64 'api':6,21,37,118,174,182 'attach':129 'base':9,24,92,106 'beyond':170 'broad':60 'broader':216 'call':4,19 'caller':127 'catalog':61 'challeng':139 'classif':227 'commit':126 'confirm':141 'connect':190 'contract':96 'convers':235 'data':63,207 'decim':114 'detail':199 'doc':179 'document':169,196 'embed':228 'endpoint':32,52,80,213,219 'equal':109 'exact':161 'exchang':231 'feed':230 'financ':68 'function':162 'generat':237 'geocod':233 'header':133 'host':58 'inform':202 'infrastructur':71 'json':86 'json-response' 'key':119 'label':172 'learn':67 'limit':122 'live':142 'lowpaymentfee' 'lowpaymentfee.com':34 'machin':66 'mani':51 'maximum':101 'metric':221 'minimum':125 'network':93 'no-api-key' 'no-rate-limit' 'offer':53 'one':49 'page':183 'path':46,166 'pay':2,17 'pay-per-cal':1,16 'pay-per-call API' 'pay-per-request' 'payment':42,87,132,158 'per':3,18,77 'point':244 'post':82 'post-method' 'premium':5,20,36,173 'premium API' 'price':74,180,229,243 'prompt':191 'proper':145 'protocol':43,153 'provid':35,56,177 'rate':121,232 'render':185 'report':222 'request':78,83,136 'respons':147 'return':85,143,214 'schema':198 'second':157 'sentiment':223 'servic':209 'settl':89 'simpli':128 'site':217 'span':62 'specif':45,211 'summar':226 'technic':195 'text':225 'timeout':159 'unclear':205 'unit':107 'usdc':15,30,95,111 'usdc-base-network' 'use':94,112 'util':72 'valid':234 'version':149 'via':10,25,39 'wallet':189 'wallet-connect':188 'web3':69 'without':200 'x402':11,26,41,131,138 'x402 endpoint' 'x402-payment'","prices":[{"id":"df817330-8481-4ac1-b606-ac9f1efe18b0","listingId":"6ee095ea-d383-445d-a55b-0087f5852258","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/65","description":"Premium API Access","outputSchema":{"input":{"type":"http","method":"GET","discoverable":true}},"maxAmountRequired":"20000","maxTimeoutSeconds":300}],"asset_contract":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","max_timeout_seconds":300},"createdAt":"2026-04-18T18:39:57.089Z"}],"sources":[{"listingId":"6ee095ea-d383-445d-a55b-0087f5852258","source":"x402_bazaar","sourceId":"https://lowpaymentfee.com/api/v1/accounts/65","sourceUrl":"https://api.cdp.coinbase.com/platform/v2/x402/discovery/resources","isPrimary":true,"firstSeenAt":"2026-04-18T18:39:57.089Z","lastSeenAt":"2026-04-22T18:31:07.387Z"}],"details":{"listingId":"6ee095ea-d383-445d-a55b-0087f5852258","quickStartSnippet":"curl -X POST https://lowpaymentfee.com/api/v1/accounts/65 \\\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 in USDC on Base network","source_url":"https://lowpaymentfee.com/api/v1/accounts/65"},{"claim":"All endpoints are priced at $0.02 per request with no API keys, no rate limits, and instant access on Base network","source_url":"https://lowpaymentfee.com"},{"claim":"The provider offers endpoints across Data & Analytics, AI & ML, Finance & Web3, and Infrastructure categories","source_url":"https://lowpaymentfee.com"}],"useCases":["Accessing premium data or services with per-request USDC micropayments on Base","Integrating pay-as-you-go API calls into agent workflows without API key management","Testing x402 payment protocol integrations against a live endpoint"],"bestFor":["Developers wanting zero-commitment, pay-per-call API access","AI agents that can settle x402 payments autonomously on Base","Projects needing low-cost ($0.02) per-request pricing with no rate limits"],"notFor":["Users who need detailed API documentation or schemas before integrating","Applications requiring non-crypto payment methods","High-volume use cases where subscription pricing would be more economical"],"kindDetails":{"x402_version":1,"resource_type":"http","bazaar_last_updated":"2026-02-17T23:14:37.485Z"},"updatedAt":"2026-04-22T18:31:07.387Z"}}