{"id":"3de8e8ef-ef52-4079-8158-c55d83c49331","shortId":"eMUNGw","kind":"x402","title":"x402-gated premium API access on Base, pay $0.02 per request in USDC — no API keys required.","tagline":"x402-gated premium API access on Base, pay $0.02 per request in USDC — no API keys required.","description":"This endpoint at lowpaymentfee.com provides \"Premium API Access\" via the x402 payment protocol on the Base network. The specific resource `/api/v1/accounts/103` is one of many endpoints offered by the provider, which spans categories including data & analytics, AI & machine learning, finance & Web3, and infrastructure utilities. All endpoints share a flat $0.02-per-request pricing model settled in USDC (USD Coin) on Base, with no API keys, no rate limits, and no minimum commitments.\n\nThe x402 challenge confirms the endpoint is live and accepts POST requests. Payment is made via the `exact` scheme to the specified wallet address, with a maximum amount of 20,000 base units of USDC (i.e., $0.02 given USDC's 6 decimals). The response MIME type is `application/json`. The timeout for payment settlement is 300 seconds.\n\nHowever, the specific functionality of the `/api/v1/accounts/103` resource is unclear. The provider's landing page lists various API categories (metrics, reports, sentiment analysis, summarization, price feeds, geocoding, etc.) but does not document an `/api/v1/accounts/` path. There is no OpenAPI schema, no detailed documentation (the /docs, /pricing, and /README pages all returned only a \"Connect wallet\" prompt with no substantive content), and no example request/response payloads. The actual data returned by this endpoint and the expected POST body are unknown.","tags":[],"capabilities":["x402-payment","usdc-settlement","base-network","json-response","per-request-pricing","no-api-key","post-method"],"categories":["api-gateway","infrastructure"],"synonyms":["x402 API","pay-per-call API","USDC API access","Base network API","lowpaymentfee","micropayment API","crypto-paid API"],"warnings":["The specific functionality of /api/v1/accounts/103 is not documented anywhere in the crawled material.","All documentation pages (/docs, /pricing, /README) returned only 'Connect wallet' with no substantive content.","No OpenAPI schema or request/response examples are available.","The /api/v1/accounts/ path does not appear in the provider's listed API catalog on the landing page."],"endpointUrl":"https://lowpaymentfee.com/api/v1/accounts/103","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/103","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, confirming pricing and network details. However, the specific purpose of /api/v1/accounts/103 is undocumented, there is no OpenAPI schema, no example request/response, and the docs/pricing/README pages are empty. The listing is effectively a stub with only payment 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'/api/v1/accounts/103':57,172 '/docs':210 '/pricing':211 '/readme':213 '0.02':10,28,86,146 '000':140 '20':139 '300':164 '6':150 'Base network API' 'USDC API access' 'accept':119 'access':6,24,44 'actual':232 'address':133 'ai':73 'amount':137 'analysi':188 'analyt':72 'api':5,16,23,34,43,101,183 'application/json':157 'base':8,26,52,98,141 'base-network' 'bodi':242 'categori':69,184 'challeng':112 'coin':96 'commit':109 'confirm':113 'connect':219 'content':225 'crypto-paid API' 'data':71,233 'decim':151 'detail':207 'document':197,208 'endpoint':38,62,82,115,237 'etc':193 'exact':127 'exampl':228 'expect':240 'feed':191 'financ':76 'flat':85 'function':169 'gate':3,21 'geocod':192 'given':147 'howev':166 'i.e':145 'includ':70 'infrastructur':79 'json-response' 'key':17,35,102 'land':179 'learn':75 'limit':105 'list':181 'live':117 'lowpaymentfee' 'lowpaymentfee.com':40 'machin':74 'made':124 'mani':61 'maximum':136 'metric':185 'micropayment API' 'mime':154 'minimum':108 'model':91 'network':53 'no-api-key' 'offer':63 'one':59 'openapi':204 'page':180,214 'path':200 'pay':9,27 'pay-per-call API' 'payload':230 'payment':48,122,161 'per':11,29,88 'per-request':87 'per-request-pricing' 'post':120,241 'post-method' 'premium':4,22,42 'price':90,190 'prompt':221 'protocol':49 'provid':41,66,177 'rate':104 'report':186 'request':12,30,89,121 'request/response':229 'requir':18,36 'resourc':56,173 'respons':153 'return':216,234 'schema':205 'scheme':128 'second':165 'sentiment':187 'settl':92 'settlement':162 'share':83 'span':68 'specif':55,168 'specifi':131 'substant':224 'summar':189 'timeout':159 'type':155 'unclear':175 'unit':142 'unknown':244 'usd':95 'usdc':14,32,94,144,148 'usdc-settlement' 'util':80 'various':182 'via':45,125 'wallet':132,220 'web3':77 'x402':2,20,47,111 'x402 API' 'x402-gated':1,19 'x402-payment'","prices":[{"id":"c668396a-9d75-4a58-82a8-ea9a68b7d491","listingId":"3de8e8ef-ef52-4079-8158-c55d83c49331","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/103","description":"Premium API Access","outputSchema":{"input":{"type":"http","method":"GET","discoverable":true}},"maxAmountRequired":"20000","maxTimeoutSeconds":300}],"asset_contract":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","max_timeout_seconds":300},"createdAt":"2026-04-18T18:40:36.460Z"}],"sources":[{"listingId":"3de8e8ef-ef52-4079-8158-c55d83c49331","source":"x402_bazaar","sourceId":"https://lowpaymentfee.com/api/v1/accounts/103","sourceUrl":"https://api.cdp.coinbase.com/platform/v2/x402/discovery/resources","isPrimary":true,"firstSeenAt":"2026-04-18T18:40:36.460Z","lastSeenAt":"2026-04-24T09:03:18.980Z"}],"details":{"listingId":"3de8e8ef-ef52-4079-8158-c55d83c49331","quickStartSnippet":"curl -X POST https://lowpaymentfee.com/api/v1/accounts/103 \\\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 of USDC on Base","source_url":"https://lowpaymentfee.com/api/v1/accounts/103"},{"claim":"USDC asset contract on Base is 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","source_url":"https://lowpaymentfee.com/api/v1/accounts/103"},{"claim":"All endpoints 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":"Provider offers APIs across Data & Analytics, AI & ML, Finance & Web3, and Infrastructure categories","source_url":"https://lowpaymentfee.com"}],"useCases":["Accessing premium API data with per-request USDC micropayments on Base","Agent-driven API consumption without pre-registration or API keys","Pay-as-you-go access to account-related data"],"bestFor":["Developers who want keyless, pay-per-request API access","AI agents that can settle x402 payments on Base","Users who prefer crypto micropayments over subscription billing"],"notFor":["Users who need detailed API documentation or OpenAPI specs before integrating","Anyone without a Base-compatible USDC wallet","High-volume consumers who need bulk pricing or rate guarantees"],"kindDetails":{"x402_version":1,"resource_type":"http","bazaar_last_updated":"2026-02-17T23:14:35.684Z"},"updatedAt":"2026-04-24T09:03:18.980Z"}}