{"id":"b9b59a36-a031-4dec-a308-0d0697127e13","shortId":"FSGeFD","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\" behind an x402 paywall on the Base network. The specific resource path `/api/v1/benefits/84` is not explicitly documented on the provider's landing page, which lists numerous other endpoints across data & analytics, AI & ML, finance & Web3, and infrastructure categories — all priced at $0.02 per request. The x402 challenge confirms the endpoint is live, accepting POST requests and settling payments in USDC (contract 0x8335…2913 on Base) to address 0x1A2B…85F3.\n\nThe provider advertises a simple pay-per-use model: $0.02 per request with no API keys, no rate limits, no minimums, and no commitments. The x402 challenge shows a maxAmountRequired of 20000 base units of USDC (6 decimals), which equals $0.02, consistent with the advertised pricing. Payment is handled via the x402 \"exact\" scheme with a 300-second timeout.\n\nDocumentation is extremely sparse. The docs, API, pricing, and README pages all render only a \"Connect wallet\" prompt with no additional content. The specific functionality behind `/api/v1/benefits/84` is not described anywhere in the crawled material — it could be a generic premium content endpoint or a specific benefit lookup. Without further documentation or example responses, the exact capabilities of this particular endpoint remain unclear.","tags":[],"capabilities":["x402-payment","usdc-settlement","base-network","pay-per-request","post-method","json-response"],"categories":["api","payments"],"synonyms":["premium API","paid API access","x402 endpoint","USDC API","Base network API","micropayment API","lowpaymentfee"],"warnings":["The specific endpoint /api/v1/benefits/84 is not listed among the provider's documented APIs — its purpose is unclear.","All documentation pages (docs, API, pricing, README) contain no useful content beyond 'Connect wallet'.","No OpenAPI spec, no request/response schema, and no example payloads are available.","The provider lists many endpoint categories but none match the /benefits/ path, raising questions about what this endpoint actually returns."],"endpointUrl":"https://lowpaymentfee.com/api/v1/benefits/84","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/84","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, but the specific resource /api/v1/benefits/84 is undocumented. No OpenAPI schema, no example requests/responses, and all documentation pages render only 'Connect wallet' with no useful content. The actual functionality of this endpoint is 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'0.02':10,24,78,116,147 '0x1a2b':104 '0x8335':98 '20000':138 '2913':99 '300':163 '6':143 '85f3':105 'Base network API' 'USDC API' 'accept':89 'access':6,20,36 'across':65 'addit':186 'address':103 'advertis':108,151 'ai':68 'analyt':67 'anywher':196 'api':5,19,35,121,172 'base':8,22,43,101,139 'base-network' 'behind':37,191 'benefit':212 'capabl':222 'categori':74 'challeng':83,133 'commit':130 'confirm':84 'connect':181 'consist':148 'content':187,207 'contract':97 'could':202 'crawl':199 'data':66 'decim':144 'describ':195 'doc':171 'document':53,166,216 'endpoint':30,64,86,208,226 'equal':146 'exact':159,221 'exampl':218 'explicit':52 'extrem':168 'financ':70 'function':190 'gate':3,17 'generic':205 'handl':155 'infrastructur':73 'json-response' 'key':122 'land':58 'limit':125 'list':61 'live':88 'lookup':213 'lowpaymentfee' 'lowpaymentfee.com':32 'materi':200 'maxamountrequir':136 'micropayment API' 'minimum':127 'ml':69 'model':115 'network':44 'numer':62 'page':59,176 'paid API access' 'particular':225 'path':48 'pay':9,23,112 'pay-per-request' 'pay-per-us':111 'payment':94,153 'paywal':40 'per':11,25,79,113,117 'post':90 'post-method' 'premium':4,18,34,206 'premium API' 'price':76,152,173 'prompt':183 'provid':33,56,107 'rate':124 'readm':175 'remain':227 'render':178 'request':12,26,80,91,118 'resourc':47 'respons':219 'scheme':160 'second':164 'settl':93 'show':134 'simpl':110 'spars':169 'specif':46,189,211 'timeout':165 'unclear':228 'unit':140 'usdc':14,28,96,142 'usdc-settlement' 'use':114 'via':156 'wallet':182 'web3':71 'without':214 'x402':2,16,39,82,132,158 'x402 endpoint' 'x402-gated':1,15 'x402-payment'","prices":[{"id":"3b9ae84c-9359-43b6-9f4e-d7c99bb9370f","listingId":"b9b59a36-a031-4dec-a308-0d0697127e13","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/84","description":"Premium API Access","outputSchema":{"input":{"type":"http","method":"GET","discoverable":true}},"maxAmountRequired":"20000","maxTimeoutSeconds":300}],"asset_contract":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","max_timeout_seconds":300},"createdAt":"2026-04-18T20:29:34.061Z"}],"sources":[{"listingId":"b9b59a36-a031-4dec-a308-0d0697127e13","source":"x402_bazaar","sourceId":"https://lowpaymentfee.com/api/v1/benefits/84","sourceUrl":"https://api.cdp.coinbase.com/platform/v2/x402/discovery/resources","isPrimary":true,"firstSeenAt":"2026-04-18T20:29:34.061Z","lastSeenAt":"2026-04-22T01:01:59.077Z"}],"details":{"listingId":"b9b59a36-a031-4dec-a308-0d0697127e13","quickStartSnippet":"curl -X POST https://lowpaymentfee.com/api/v1/benefits/84 \\\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 x402 challenge returns maxAmountRequired of 20000 in USDC on Base network","source_url":"https://lowpaymentfee.com/api/v1/benefits/84"},{"claim":"All listed endpoints are priced at $0.02 per request with no API keys, no rate limits, and no minimums","source_url":"https://lowpaymentfee.com"},{"claim":"USDC asset contract is 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913 on Base","source_url":"https://lowpaymentfee.com/api/v1/benefits/84"},{"claim":"Documentation pages render only 'Connect wallet' with no additional content","source_url":"https://lowpaymentfee.com/docs"}],"useCases":["Accessing premium content or data behind a per-request paywall","Agent-driven API consumption with automatic USDC micropayments","Testing x402 payment flows on Base network"],"bestFor":["Developers experimenting with x402 payment protocol","Agents that can settle USDC payments on Base","Use cases requiring keyless, pay-per-call API access"],"notFor":["Users needing detailed API documentation or schemas before integrating","High-volume consumers who need subscription-based pricing","Anyone without a Base-compatible USDC wallet"],"kindDetails":{"x402_version":1,"resource_type":"http","bazaar_last_updated":"2026-02-17T23:13:25.636Z"},"updatedAt":"2026-04-22T01:01:59.077Z"}}