{"id":"bc8953a3-bcb9-4529-a3fb-40baeecef549","shortId":"VTRcxs","kind":"x402","title":"x402-gated premium API access on Base, pay $0.02 per request in USDC — no keys required.","tagline":"x402-gated premium API access on Base, pay $0.02 per request in USDC — no keys required.","description":"This endpoint at lowpaymentfee.com provides \"Premium API Access\" behind an x402 paywall on the Base network. The specific resource `/api/v1/claims/86` 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, payable in USDC (USD Coin) on Base, with no API keys, rate limits, or commitments required.\n\nThe x402 challenge confirms the endpoint is live and accepts POST requests. Payment is settled on-chain to address `0x1A2B13E97f5F837C8F9FA1F95a1484B7C70d85F3` using the USDC contract `0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913` on Base. The maximum amount required per call is 20,000 base units of USDC (6 decimals), which equals $0.02. The payment scheme is \"exact\" with a timeout of 300 seconds.\n\nHowever, the specific functionality of `/api/v1/claims/86` is unclear. The platform's landing page lists various API categories but does not include a \"claims\" endpoint in its public catalog. No OpenAPI schema, detailed documentation, or example request/response payloads are available — the docs, pricing, and README pages all render only a \"Connect wallet\" prompt with no substantive content. As a result, the actual input parameters and response format for this particular endpoint remain unknown.","tags":[],"capabilities":["x402-payment","usdc-on-base","per-request-billing","no-api-key","post-method","json-response"],"categories":["api","data"],"synonyms":["premium API","x402 endpoint","pay-per-call API","USDC API","Base network API","lowpaymentfee","claims API","micropayment API"],"warnings":["The specific functionality of /api/v1/claims/86 is not documented anywhere on the site — it does not appear in the platform's public API catalog.","No OpenAPI spec, request schema, or response schema is available.","All documentation pages (docs, pricing, README) render only 'Connect wallet' with no substantive content.","The purpose of the 'claims' resource path is unknown and cannot be verified."],"endpointUrl":"https://lowpaymentfee.com/api/v1/claims/86","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/claims/86","description":"Premium API Access","outputSchema":{"input":{"type":"http","method":"GET","discoverable":true}},"maxAmountRequired":"20000","maxTimeoutSeconds":300}]},"qualityScore":"0.300","qualityRationale":"The endpoint is live (402 challenge confirmed) and pricing is clear ($0.02 USDC on Base), but there is no documentation, no OpenAPI schema, no example requests or responses, and the specific purpose of /api/v1/claims/86 is not described anywhere in the crawled material. The docs/pricing/README pages are all empty beyond a wallet-connect 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'0.02':10,27,85,149 '000':140 '0x1a2b13e97f5f837c8f9fa1f95a1484b7c70d85f3':124 '0x833589fcd6edb6e08f4c7c32d4f71b54bda02913':129 '20':139 '300':159 '6':145 'Base network API' 'USDC API' 'accept':113 'access':6,23,42 'actual':221 'address':123 'ai':68 'amount':134 'analyt':67 'api':5,22,41,97,176 'avail':199 'base':8,25,49,94,131,141 'behind':43 'call':137 'catalog':188 'categori':76,177 'chain':121 'challeng':106 'claim':183 'claims API' 'coin':92 'commit':102 'confirm':107 'connect':210 'content':216 'contract':128 'data':66 'decim':146 'detail':192 'doc':201 'document':193 'endpoint':36,59,78,109,184,230 'equal':148 'exact':154 'exampl':195 'financ':71 'format':226 'function':164 'gate':3,20 'howev':161 'includ':181 'infrastructur':74 'input':222 'json-response' 'key':16,33,98 'land':172 'learn':70 'limit':100 'list':174 'live':111 'lowpaymentfee' 'lowpaymentfee.com':38 'machin':69 'mani':58 'maximum':133 'micropayment API' 'network':50 'no-api-key' 'offer':60 'on-chain':119 'one':56 'openapi':190 'page':173,205 'paramet':223 'particular':229 'pay':9,26 'pay-per-call API' 'payabl':88 'payload':197 'payment':116,151 'paywal':46 'per':11,28,86,136 'per-request-billing' 'platform':63,81,170 'post':114 'post-method' 'premium':4,21,40 'premium API' 'price':83,202 'prompt':212 'provid':39 'public':187 'rate':99 'readm':204 'remain':231 'render':207 'request':12,29,87,115 'request/response':196 'requir':17,34,103,135 'resourc':53 'respons':225 'result':219 'schema':191 'scheme':152 'second':160 'settl':118 'span':65 'specif':52,163 'substant':215 'timeout':157 'unclear':168 'unit':142 'unknown':232 'usd':91 'usdc':14,31,90,127,144 'usdc-on-base' 'use':125 'util':75 'various':175 'wallet':211 'web3':72 'x402':2,19,45,105 'x402 endpoint' 'x402-gated':1,18 'x402-payment'","prices":[{"id":"c9f08040-21b1-4477-95d2-86b3fe00a624","listingId":"bc8953a3-bcb9-4529-a3fb-40baeecef549","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/claims/86","description":"Premium API Access","outputSchema":{"input":{"type":"http","method":"GET","discoverable":true}},"maxAmountRequired":"20000","maxTimeoutSeconds":300}],"asset_contract":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","max_timeout_seconds":300},"createdAt":"2026-04-18T18:45:56.131Z"}],"sources":[{"listingId":"bc8953a3-bcb9-4529-a3fb-40baeecef549","source":"x402_bazaar","sourceId":"https://lowpaymentfee.com/api/v1/claims/86","sourceUrl":"https://api.cdp.coinbase.com/platform/v2/x402/discovery/resources","isPrimary":true,"firstSeenAt":"2026-04-18T18:45:56.131Z","lastSeenAt":"2026-04-22T10:31:35.951Z"}],"details":{"listingId":"bc8953a3-bcb9-4529-a3fb-40baeecef549","quickStartSnippet":"curl -X POST https://lowpaymentfee.com/api/v1/claims/86 \\\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":"All endpoints priced at $0.02 per request with no API keys, rate limits, or commitments","source_url":"https://lowpaymentfee.com"},{"claim":"Platform offers Data & Analytics, AI & ML, Finance & Web3, and Infrastructure API categories","source_url":"https://lowpaymentfee.com"},{"claim":"x402 challenge returns maxAmountRequired of 20000 base units USDC on Base (=$0.02)","source_url":"https://lowpaymentfee.com/api/v1/claims/86"},{"claim":"Payment settled to 0x1A2B13E97f5F837C8F9FA1F95a1484B7C70d85F3 using USDC contract 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","source_url":"https://lowpaymentfee.com/api/v1/claims/86"}],"useCases":["Accessing premium data or services with per-request USDC micropayments on Base","Agent-driven workflows that need keyless, pay-as-you-go API access","Programmatic retrieval of claim-related data (specific use unclear)"],"bestFor":["Developers wanting no-signup, pay-per-call API access","AI agents with x402-compatible payment capabilities","Users who prefer on-chain USDC settlement on Base"],"notFor":["Users needing detailed API documentation or schemas before purchasing","High-volume use cases where per-request pricing at $0.02 adds up quickly","Anyone requiring fiat or non-crypto payment methods"],"kindDetails":{"x402_version":1,"resource_type":"http","bazaar_last_updated":"2026-02-17T23:14:20.077Z"},"updatedAt":"2026-04-22T10:31:35.951Z"}}