{"id":"413ed805-75d3-4b9d-b745-d9240eb56cab","shortId":"Gg84cE","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. It is one of many endpoints offered by the platform, which spans data & analytics, AI & machine learning, finance & Web3, and infrastructure utility categories — all priced at $0.02 per request settled in USDC on the Base network.\n\nThe specific endpoint `/api/v1/accounts/185` is listed under the umbrella of \"Premium API Access\" but its exact functionality is not documented in the available crawl material. The platform advertises a simple pay-per-call model: no API keys, no rate limits, no commitments. Callers authenticate and pay by including an X-PAYMENT header conforming to the x402 protocol. The 402 challenge confirms the endpoint is live, accepts USDC (contract 0x8335…2913) on Base, and requires a maximum of 20,000 base units (i.e., $0.02 given USDC's 6 decimals).\n\nDocumentation on the site is extremely thin — 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 usage examples available. Because of this, the actual data returned by this endpoint and the expected POST body are unknown. Prospective callers should be aware that the platform appears to be early-stage or lightly documented.","tags":[],"capabilities":["x402-payment","usdc-settlement","base-network","pay-per-request","no-api-key","json-response"],"categories":["api-gateway","payments"],"synonyms":["lowpaymentfee","x402 API","pay-per-call API","USDC micropayment API","Base network API","402 payment endpoint","premium API access"],"warnings":["No documentation available — /docs, /pricing, /api, and /README all return only a 'Connect wallet' prompt with no content.","The exact functionality of /api/v1/accounts/185 is unknown; 'Premium API Access' is the only description provided.","No OpenAPI spec or request/response schema is available.","The platform appears early-stage with minimal public information."],"endpointUrl":"https://lowpaymentfee.com/api/v1/accounts/185","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/185","description":"Premium API Access","outputSchema":{"input":{"type":"http","method":"GET","discoverable":true}},"maxAmountRequired":"20000","maxTimeoutSeconds":300}]},"qualityScore":"0.250","qualityRationale":"The endpoint is confirmed live via a valid 402 challenge, and pricing is clear ($0.02 USDC on Base). However, there is no OpenAPI spec, no request/response schema, no documentation beyond a landing page listing, and the specific purpose of /api/v1/accounts/185 is undocumented. This is effectively a stub 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'/api/v1/accounts/185':89 '/docs':184 '/pricing':185 '/readme':188 '0.02':10,28,76,170 '000':166 '0x8335':156 '20':165 '2913':157 '402':146 '402 payment endpoint' '6':174 'Base network API' 'USDC micropayment API' 'accept':153 'access':6,24,44,98 'actual':218 'advertis':113 'ai':64 'analyt':63 'api':5,16,23,34,43,97,122 'appear':239 'authent':130 'avail':108,213 'awar':235 'base':8,26,84,159,167 'base-network' 'bodi':228 'call':119 'caller':129,232 'categori':72 'challeng':147 'commit':128 'confirm':148 'conform':140 'connect':194 'content':200 'contract':155 'crawl':109 'data':62,219 'decim':175 'document':105,176,247 'earli':243 'early-stag':242 'endpoint':38,55,88,150,223 'exact':101 'exampl':212 'expect':226 'extrem':181 'financ':67 'function':102 'gate':3,21 'given':171 'header':139 'i.e':169 'includ':134 'infrastructur':70 'json-response' 'key':17,35,123 'learn':66 'light':246 'limit':126 'list':91 'live':152 'lowpaymentfee' 'lowpaymentfee.com':40 'machin':65 'mani':54 'materi':110 'maximum':163 'model':120 'network':85 'no-api-key' 'offer':56 'one':52 'openapi':204 'page':189 'pay':9,27,117,132 'pay-per-cal':116 'pay-per-call API' 'pay-per-request' 'payment':48,138 'per':11,29,77,118 'platform':59,112,238 'post':227 'premium':4,22,42,96 'premium API access' 'price':74 'prompt':196 'prospect':231 'protocol':49,144 'provid':41 'rate':125 'render':191 'request':12,30,78 'request/response':207 'requir':18,36,161 'return':220 'schema':208 'settl':79 'simpl':115 'site':179 'span':61 'spec':205 'specif':87 'stage':244 'thin':182 'umbrella':94 'unit':168 'unknown':230 'usag':211 'usdc':14,32,81,154,172 'usdc-settlement' 'util':71 'via':45 'wallet':195 'web3':68 'x':137 'x-payment':136 'x402':2,20,47,143 'x402 API' 'x402-gated':1,19 'x402-payment'","prices":[{"id":"08937f1d-3084-4851-9860-0614c6810041","listingId":"413ed805-75d3-4b9d-b745-d9240eb56cab","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/185","description":"Premium API Access","outputSchema":{"input":{"type":"http","method":"GET","discoverable":true}},"maxAmountRequired":"20000","maxTimeoutSeconds":300}],"asset_contract":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","max_timeout_seconds":300},"createdAt":"2026-04-18T18:41:33.737Z"}],"sources":[{"listingId":"413ed805-75d3-4b9d-b745-d9240eb56cab","source":"x402_bazaar","sourceId":"https://lowpaymentfee.com/api/v1/accounts/185","sourceUrl":"https://api.cdp.coinbase.com/platform/v2/x402/discovery/resources","isPrimary":true,"firstSeenAt":"2026-04-18T18:41:33.737Z","lastSeenAt":"2026-04-24T08:32:02.446Z"}],"details":{"listingId":"413ed805-75d3-4b9d-b745-d9240eb56cab","quickStartSnippet":"curl -X POST https://lowpaymentfee.com/api/v1/accounts/185 \\\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 challenge accepting USDC on Base with maxAmountRequired of 20000 base units ($0.02).","source_url":"https://lowpaymentfee.com/api/v1/accounts/185"},{"claim":"The platform lists APIs across data & analytics, AI & ML, finance & Web3, and infrastructure categories, all at $0.02 per request.","source_url":"https://lowpaymentfee.com"},{"claim":"The platform advertises no API keys, no rate limits, instant access, and Base network settlement.","source_url":"https://lowpaymentfee.com"}],"useCases":["Programmatic access to a premium data endpoint with per-call USDC micropayments","Agent-driven API consumption without pre-registration or API key management","Demonstrating x402 payment protocol integration on Base"],"bestFor":["Developers experimenting with x402 payment-gated APIs","AI agents that need keyless, pay-per-call endpoint access","Projects already operating on the Base L2 with USDC"],"notFor":["Users who need well-documented, production-grade APIs with clear schemas","Anyone without a Base-compatible wallet or USDC balance"],"kindDetails":{"x402_version":1,"resource_type":"http","bazaar_last_updated":"2026-02-17T23:14:32.847Z"},"updatedAt":"2026-04-24T08:32:02.446Z"}}