{"id":"8f71e94a-405e-4c43-88d1-da5afae4382b","shortId":"mgGfQx","kind":"x402","title":"x402-gated premium API endpoint on Base, pay $0.02 per request in USDC.","tagline":"x402-gated premium API endpoint on Base, pay $0.02 per request in USDC.","description":"This endpoint at `/api/v1/claims/97` is part of the lowpaymentfee.com platform, which offers a collection of x402-protocol pay-per-request APIs spanning data & analytics, AI & machine learning, finance & Web3, and infrastructure utilities. The specific endpoint is labeled \"Premium API Access\" and accepts POST requests, returning JSON responses. Payment is settled on the Base network using USDC (contract 0x8335…2913) via the x402 exact payment scheme.\n\nThe platform advertises a flat $0.02 per request across all endpoints, with no API keys, no rate limits, and no minimum commitments required. The x402 challenge confirms a `maxAmountRequired` of 20000 base units of USDC (6 decimals), which equals $0.02. The endpoint was confirmed live, returning a proper 402 challenge. However, the specific functionality behind `/api/v1/claims/97` is not documented — the site lists many other endpoints (analytics, AI, finance, utilities) but does not describe what the \"claims\" resource does or what input it expects.\n\nDocumentation is extremely thin: the /docs, /pricing, /api, and /README pages all render only a \"Connect wallet\" prompt with no substantive content. There is no OpenAPI spec, no request/response examples, and no description of the claims endpoint's purpose or parameters.","tags":[],"capabilities":["x402-payment","usdc-settlement","base-network","pay-per-request","json-response","post-method"],"categories":["api","payments"],"synonyms":["premium API","x402 API","pay-per-call","USDC micropayment","Base network API","lowpaymentfee","claims endpoint"],"warnings":["The specific functionality of /api/v1/claims/97 is not documented anywhere on the site","All documentation pages (/docs, /pricing, /api, /README) render only 'Connect wallet' with no content","No OpenAPI spec, no request/response schema, and no examples are available","The 'claims' resource is not listed among the site's advertised API categories, making its purpose unclear"],"endpointUrl":"https://lowpaymentfee.com/api/v1/claims/97","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/97","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 with clear pricing ($0.02 USDC on Base). However, the specific purpose of /api/v1/claims/97 is completely undocumented — no schema, no examples, no description of what 'claims' means. All documentation pages render only a wallet-connect prompt. This is effectively a stub 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'/api/v1/claims/97':32,151 '/docs':184 '/pricing':185 '/readme':188 '0.02':10,24,101,135 '0x8335':88 '20000':126 '2913':89 '402':144 '6':131 'Base network API' 'USDC micropayment' 'accept':72 'access':70 'across':104 'advertis':98 'ai':55,162 'analyt':54,161 'api':5,19,51,69,109 'base':8,22,83,127 'base-network' 'behind':150 'challeng':121,145 'claim':171,214 'claims endpoint' 'collect':42 'commit':117 'confirm':122,139 'connect':194 'content':200 'contract':87 'data':53 'decim':132 'describ':168 'descript':211 'document':154,179 'endpoint':6,20,30,65,106,137,160,215 'equal':134 'exact':93 'exampl':208 'expect':178 'extrem':181 'financ':58,163 'flat':100 'function':149 'gate':3,17 'howev':146 'infrastructur':61 'input':176 'json':76 'json-response' 'key':110 'label':67 'learn':57 'limit':113 'list':157 'live':140 'lowpaymentfee' 'lowpaymentfee.com':37 'machin':56 'mani':158 'maxamountrequir':124 'minimum':116 'network':84 'offer':40 'openapi':204 'page':189 'paramet':219 'part':34 'pay':9,23,48 'pay-per-call' 'pay-per-request':47 'payment':78,94 'per':11,25,49,102 'platform':38,97 'post':73 'post-method' 'premium':4,18,68 'premium API' 'prompt':196 'proper':143 'protocol':46 'purpos':217 'rate':112 'render':191 'request':12,26,50,74,103 'request/response':207 'requir':118 'resourc':172 'respons':77 'return':75,141 'scheme':95 'settl':80 'site':156 'span':52 'spec':205 'specif':64,148 'substant':199 'thin':182 'unit':128 'usdc':14,28,86,130 'usdc-settlement' 'use':85 'util':62,164 'via':90 'wallet':195 'web3':59 'x402':2,16,45,92,120 'x402 API' 'x402-gated':1,15 'x402-payment' 'x402-protocol':44","prices":[{"id":"9d0a0ce3-c32a-42da-91b0-5615adb6de0b","listingId":"8f71e94a-405e-4c43-88d1-da5afae4382b","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/97","description":"Premium API Access","outputSchema":{"input":{"type":"http","method":"GET","discoverable":true}},"maxAmountRequired":"20000","maxTimeoutSeconds":300}],"asset_contract":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","max_timeout_seconds":300},"createdAt":"2026-04-18T18:46:04.558Z"}],"sources":[{"listingId":"8f71e94a-405e-4c43-88d1-da5afae4382b","source":"x402_bazaar","sourceId":"https://lowpaymentfee.com/api/v1/claims/97","sourceUrl":"https://api.cdp.coinbase.com/platform/v2/x402/discovery/resources","isPrimary":true,"firstSeenAt":"2026-04-18T18:46:04.558Z","lastSeenAt":"2026-04-22T10:31:36.463Z"}],"details":{"listingId":"8f71e94a-405e-4c43-88d1-da5afae4382b","quickStartSnippet":"curl -X POST https://lowpaymentfee.com/api/v1/claims/97 \\\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":"Platform advertises $0.02 per request with no API keys, no rate limits, and instant access on Base network","source_url":"https://lowpaymentfee.com"},{"claim":"x402 challenge returns maxAmountRequired of 20000 base units USDC on Base network","source_url":"https://lowpaymentfee.com/api/v1/claims/97"},{"claim":"USDC asset contract is 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913 on Base","source_url":"https://lowpaymentfee.com/api/v1/claims/97"},{"claim":"Documentation pages render only 'Connect wallet' with no substantive content","source_url":"https://lowpaymentfee.com/docs"}],"useCases":["Accessing a gated premium API resource with per-request USDC micropayments","Integrating x402-compatible agents that auto-pay for API calls on Base","Testing x402 payment flows against a live endpoint"],"bestFor":["Developers experimenting with x402 payment protocol","Agents that need low-cost pay-per-request API access on Base","Projects wanting no-API-key, no-rate-limit access patterns"],"notFor":["Users who need detailed documentation or OpenAPI specs before integrating","Use cases requiring known, well-documented endpoint behavior (the claims resource is undocumented)","High-volume consumers who need bulk pricing or subscription plans"],"kindDetails":{"x402_version":1,"resource_type":"http","bazaar_last_updated":"2026-02-17T23:14:19.728Z"},"updatedAt":"2026-04-22T10:31:36.463Z"}}