{"id":"f5d676e9-a447-4afc-a712-d319926ffeb7","shortId":"k9T46A","kind":"x402","title":"x402-gated premium API access on Base, pay $0.02 per request in USDC.","tagline":"x402-gated premium API access on Base, pay $0.02 per request in USDC.","description":"This endpoint at lowpaymentfee.com provides \"Premium API Access\" via the x402 payment protocol. It is one of many endpoints offered by the lowpaymentfee.com platform, which hosts a catalog of pay-per-call APIs spanning data & analytics, AI & machine learning, finance & Web3, and infrastructure utilities. All endpoints are priced at $0.02 per request, settled in USDC on the Base network, with no API keys, rate limits, or commitments required.\n\nThe specific endpoint `/api/v1/benefits/17` is labeled \"Premium API Access\" but the crawled documentation does not clarify what data or functionality it returns beyond that generic title. The x402 challenge confirms the endpoint is live, accepts POST requests, and requires a maximum payment of 20,000 base units of USDC (0x8335…2913 on Base), which equals $0.02 given USDC's 6 decimals. The payment is sent to address 0x1A2B13E97f5F837C8F9FA1F95a1484B7C70d85F3 with a 300-second timeout.\n\nBecause the endpoint's specific functionality is not documented in the crawl material and the docs/pricing/README pages all render only a \"Connect wallet\" prompt with no further content, the actual response schema and purpose of this particular endpoint remain unclear. The platform itself appears operational and the x402 challenge is well-formed, but prospective callers should be aware that there is no public documentation describing what `/api/v1/benefits/17` returns.","tags":[],"capabilities":["x402-payment","usdc-base","pay-per-request","no-api-key","post-endpoint","json-response"],"categories":["api-marketplace","payments"],"synonyms":["lowpaymentfee","low payment fee API","x402 API","USDC pay-per-call","Base network API","micropayment API","premium API"],"warnings":["The specific functionality of /api/v1/benefits/17 ('Premium API Access') is not documented anywhere in the crawled material.","All documentation pages (docs, pricing, README, api) render only a 'Connect wallet' prompt with no usable content.","No OpenAPI spec, request schema, or response schema is available.","The endpoint does not appear in the site's own listed API catalog, making its purpose unclear."],"endpointUrl":"https://lowpaymentfee.com/api/v1/benefits/17","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/benefits/17","description":"Premium API Access","outputSchema":{"input":{"type":"http","method":"GET","discoverable":true}},"maxAmountRequired":"20000","maxTimeoutSeconds":300}]},"qualityScore":"0.300","qualityRationale":"The x402 challenge is live and well-formed, confirming the endpoint exists and its pricing. However, the specific endpoint '/api/v1/benefits/17' has no documentation explaining what it does or returns, the docs pages are empty beyond a wallet-connect prompt, and no OpenAPI schema or example responses are available. The listing is essentially a stub with confirmed 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'0.02':10,24,79,153 '000':142 '0x1a2b13e97f5f837c8f9fa1f95a1484b7c70d85f3':165 '0x8335':147 '20':141 '2913':148 '300':168 '6':157 'Base network API' 'USDC pay-per-call' 'accept':132 'access':6,20,36,106 'actual':200 'address':164 'ai':66 'analyt':65 'api':5,19,35,62,91,105 'appear':214 'awar':229 'base':8,22,87,143,150 'beyond':120 'call':61 'caller':226 'catalog':56 'challeng':126,219 'clarifi':113 'commit':96 'confirm':127 'connect':192 'content':198 'crawl':109,182 'data':64,115 'decim':158 'describ':236 'docs/pricing/readme':186 'document':110,179,235 'endpoint':30,47,75,100,129,173,208 'equal':152 'financ':69 'form':223 'function':117,176 'gate':3,17 'generic':122 'given':154 'host':54 'infrastructur':72 'json-response' 'key':92 'label':103 'learn':68 'limit':94 'live':131 'low payment fee API' 'lowpaymentfee' 'lowpaymentfee.com':32,51 'machin':67 'mani':46 'materi':183 'maximum':138 'micropayment API' 'network':88 'no-api-key' 'offer':48 'one':44 'oper':215 'page':187 'particular':207 'pay':9,23,59 'pay-per-cal':58 'pay-per-request' 'payment':40,139,160 'per':11,25,60,80 'platform':52,212 'post':133 'post-endpoint' 'premium':4,18,34,104 'premium API' 'price':77 'prompt':194 'prospect':225 'protocol':41 'provid':33 'public':234 'purpos':204 'rate':93 'remain':209 'render':189 'request':12,26,81,134 'requir':97,136 'respons':201 'return':119,239 'schema':202 'second':169 'sent':162 'settl':82 'span':63 'specif':99,175 'timeout':170 'titl':123 'unclear':210 'unit':144 'usdc':14,28,84,146,155 'usdc-base' 'util':73 'via':37 'wallet':193 'web3':70 'well':222 'well-form':221 'x402':2,16,39,125,218 'x402 API' 'x402-gated':1,15 'x402-payment'","prices":[{"id":"587e8a68-f2ef-47f8-8c30-f0f4ea18c625","listingId":"f5d676e9-a447-4afc-a712-d319926ffeb7","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/benefits/17","description":"Premium API Access","outputSchema":{"input":{"type":"http","method":"GET","discoverable":true}},"maxAmountRequired":"20000","maxTimeoutSeconds":300}],"asset_contract":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","max_timeout_seconds":300},"createdAt":"2026-04-18T19:59:40.819Z"}],"sources":[{"listingId":"f5d676e9-a447-4afc-a712-d319926ffeb7","source":"x402_bazaar","sourceId":"https://lowpaymentfee.com/api/v1/benefits/17","sourceUrl":"https://api.cdp.coinbase.com/platform/v2/x402/discovery/resources","isPrimary":true,"firstSeenAt":"2026-04-18T19:59:40.819Z","lastSeenAt":"2026-04-22T01:01:58.526Z"}],"details":{"listingId":"f5d676e9-a447-4afc-a712-d319926ffeb7","quickStartSnippet":"curl -X POST https://lowpaymentfee.com/api/v1/benefits/17 \\\n  -H \"Content-Type: application/json\" \\\n  -H \"X-PAYMENT: <x402-payment-header>\"","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 confirming it is live and accepts POST requests with USDC on Base.","source_url":"https://lowpaymentfee.com/api/v1/benefits/17"},{"claim":"All endpoints on the platform are priced at $0.02 per request with no API keys, rate limits, or commitments.","source_url":"https://lowpaymentfee.com"},{"claim":"USDC asset address 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913 on Base network, maxAmountRequired 20000 base units ($0.02).","source_url":"https://lowpaymentfee.com/api/v1/benefits/17"},{"claim":"The platform offers APIs 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","Agent-driven API consumption without pre-registration or API keys","Programmatic pay-as-you-go access to utility endpoints"],"bestFor":["Developers wanting zero-signup, pay-per-call API access","AI agents that can settle x402 payments on Base","Users who prefer crypto micropayments over subscription billing"],"notFor":["Users who need detailed documentation or guaranteed SLAs before integrating","Anyone without a Base-compatible USDC wallet or x402 client"],"kindDetails":{"x402_version":1,"resource_type":"http","bazaar_last_updated":"2026-02-17T23:13:26.266Z"},"updatedAt":"2026-04-22T01:01:58.526Z"}}