{"id":"09c33656-a3a6-4156-83a1-0de3b9b40bb9","shortId":"G5seCh","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 on the Base network. The specific resource at /api/v1/policies/79 is one of many endpoints offered by the platform, which spans data & analytics, AI & machine learning, finance & Web3, and infrastructure utility categories. All endpoints on the platform are priced at $0.02 per request, settled in USDC (USD Coin) on Base with no API keys, no rate limits, and no minimum commitments required.\n\nThe x402 challenge confirms the endpoint is live, accepting POST requests and requiring an X-PAYMENT header with an exact-scheme payment of 20,000 base units of USDC (0x8335…2913 on Base), which equals $0.02 given USDC's 6 decimals. The payment is directed to address 0x1A2B13E97f5F837C8F9FA1F95a1484B7C70d85F3 with a 300-second timeout. The output schema indicates an HTTP POST method with discoverable input.\n\nHowever, the specific functionality behind /api/v1/policies/79 is unclear — the description is simply \"Premium API Access\" with no further documentation. The docs, pricing, API, and README pages all render only a \"Connect wallet\" prompt with no substantive content. Without documentation or example responses, it is impossible to confirm what data or service this particular endpoint returns. The platform lists sibling endpoints for analytics, AI inference, finance data, and utilities, but this specific policy endpoint does not map clearly to any of those categories.","tags":[],"capabilities":["x402-payment","usdc-settlement","base-network","pay-per-request","no-api-key","http-post"],"categories":["api-gateway","misc"],"synonyms":["lowpaymentfee","low payment fee API","x402 API","pay-per-call API","USDC micropayment API","Base network API","premium API access"],"warnings":["The specific functionality of /api/v1/policies/79 is undocumented — 'Premium API Access' is the only description available.","All documentation pages (docs, pricing, API, README) render only a 'Connect wallet' prompt with no substantive content.","No OpenAPI spec, no request/response examples, and no schema beyond the x402 challenge outputSchema.","It is unclear how this 'policies/79' endpoint relates to the platform's advertised analytics, AI, finance, and utility APIs."],"endpointUrl":"https://lowpaymentfee.com/api/v1/policies/79","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/policies/79","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 pricing is clear ($0.02/request in USDC on Base), but the specific endpoint's purpose is undocumented. No OpenAPI schema, no example requests/responses, and all documentation pages render only 'Connect wallet' with no content. The listing is effectively a 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'0.02':10,24,81,140 '000':129 '0x1a2b13e97f5f837c8f9fa1f95a1484b7c70d85f3':152 '0x8335':134 '20':128 '2913':135 '300':155 '6':144 'Base network API' 'USDC micropayment API' 'accept':111 'access':6,20,36,183 'address':151 'ai':64,231 'analyt':63,230 'api':5,19,35,93,182,191 'base':8,22,44,90,130,137 'base-network' 'behind':173 'categori':72,250 'challeng':105 'clear':245 'coin':88 'commit':101 'confirm':106,215 'connect':199 'content':205 'data':62,217,234 'decim':145 'descript':178 'direct':149 'discover':167 'doc':189 'document':187,207 'endpoint':30,55,74,108,222,228,241 'equal':139 'exact':124 'exact-schem':123 'exampl':209 'financ':67,233 'function':172 'gate':3,17 'given':141 'header':120 'howev':169 'http':163 'http-post' 'imposs':213 'indic':161 'infer':232 'infrastructur':70 'input':168 'key':94 'learn':66 'limit':97 'list':226 'live':110 'low payment fee API' 'lowpaymentfee' 'lowpaymentfee.com':32 'machin':65 'mani':54 'map':244 'method':165 'minimum':100 'network':45 'no-api-key' 'offer':56 'one':52 'output':159 'page':194 'particular':221 'pay':9,23 'pay-per-call API' 'pay-per-request' 'payment':40,119,126,147 'per':11,25,82 'platform':59,77,225 'polici':240 'post':112,164 'premium':4,18,34,181 'premium API access' 'price':79,190 'prompt':201 'protocol':41 'provid':33 'rate':96 'readm':193 'render':196 'request':12,26,83,113 'requir':102,115 'resourc':48 'respons':210 'return':223 'schema':160 'scheme':125 'second':156 'servic':219 'settl':84 'sibl':227 'simpli':180 'span':61 'specif':47,171,239 'substant':204 'timeout':157 'unclear':176 'unit':131 'usd':87 'usdc':14,28,86,133,142 'usdc-settlement' 'util':71,236 'via':37 'wallet':200 'web3':68 'without':206 'x':118 'x-payment':117 'x402':2,16,39,104 'x402 API' 'x402-gated':1,15 'x402-payment'","prices":[{"id":"cfb4c24c-10df-44a4-8103-36a7d46eb11e","listingId":"09c33656-a3a6-4156-83a1-0de3b9b40bb9","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/policies/79","description":"Premium API Access","outputSchema":{"input":{"type":"http","method":"GET","discoverable":true}},"maxAmountRequired":"20000","maxTimeoutSeconds":300}],"asset_contract":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","max_timeout_seconds":300},"createdAt":"2026-04-18T18:52:07.425Z"}],"sources":[{"listingId":"09c33656-a3a6-4156-83a1-0de3b9b40bb9","source":"x402_bazaar","sourceId":"https://lowpaymentfee.com/api/v1/policies/79","sourceUrl":"https://api.cdp.coinbase.com/platform/v2/x402/discovery/resources","isPrimary":true,"firstSeenAt":"2026-04-18T18:52:07.425Z","lastSeenAt":"2026-04-22T05:31:22.311Z"}],"details":{"listingId":"09c33656-a3a6-4156-83a1-0de3b9b40bb9","quickStartSnippet":"curl -X POST https://lowpaymentfee.com/api/v1/policies/79 \\\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 platform lists endpoints across data & analytics, AI & ML, finance & Web3, and infrastructure categories, all priced at $0.02/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"},{"claim":"The x402 challenge requires 20,000 base units of USDC (asset 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913) on Base network, equaling $0.02.","source_url":"https://lowpaymentfee.com/api/v1/policies/79"}],"useCases":["Accessing gated API resources with per-request USDC micropayments on Base","Agent-driven API consumption without pre-registration or API keys","Programmatic pay-as-you-go access to platform services"],"bestFor":["Developers wanting zero-signup, pay-per-call API access","AI agents that can settle x402 payments in USDC on Base","Users who prefer crypto micropayments over subscription billing"],"notFor":["Users who need detailed API documentation 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":"2026-02-17T23:14:02.1Z"},"updatedAt":"2026-04-22T05:31:22.311Z"}}