{"id":"cb7df2af-85be-4513-874f-03b50f7ba750","shortId":"9wQmkg","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\" behind an x402 paywall, settling payments in USDC on the Base network. The specific resource path (/api/v1/generate/resource/131) falls under the provider's broader platform of pay-per-call APIs spanning data & analytics, AI & ML, finance & Web3, and infrastructure utilities. Each request costs $0.02 (20,000 base units of USDC with 6 decimals), and the provider advertises no API keys, no rate limits, and instant access.\n\nThe endpoint accepts HTTP POST requests and returns application/json responses. However, the exact input schema and output format for this particular resource (resource/131) are not documented in the crawled material. The provider's landing page lists many endpoints across categories but does not provide detailed request/response schemas or example payloads for any of them. The docs, pricing, and API pages all resolve to a minimal \"Connect wallet\" prompt with no further documentation.\n\nBecause the specific functionality behind resource/131 is unclear — it could be a generation utility, a placeholder, or something else entirely — agents should treat this as an opaque premium endpoint until more documentation surfaces. The x402 challenge is live and well-formed, confirming the endpoint is operational and ready to accept payments.","tags":[],"capabilities":["x402-payment","usdc-settlement","base-network","pay-per-request","no-api-key","json-response","http-post"],"categories":["infrastructure","utility"],"synonyms":["premium API","pay-per-call API","x402 endpoint","USDC API","Base network API","micropayment API","lowpaymentfee"],"warnings":["No documentation available for the specific resource /api/v1/generate/resource/131 — purpose and expected input/output are unknown","All doc pages (docs, api, pricing, README) resolve to a minimal 'Connect wallet' page with no content","No OpenAPI or schema definition found for any endpoint on the platform","The provider lists many endpoints but none have detailed specifications — treat all as opaque"],"endpointUrl":"https://lowpaymentfee.com/api/v1/generate/resource/131","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/generate/resource/131","description":"Premium API Access","outputSchema":{"input":{"type":"http","method":"GET","discoverable":true}},"maxAmountRequired":"20000","maxTimeoutSeconds":300}]},"qualityScore":"0.350","qualityRationale":"The x402 challenge is live and well-formed, confirming the endpoint works and pricing is clear ($0.02 USDC on Base). However, there is no documentation for this specific resource's input/output schema, no OpenAPI spec, and the docs/pricing/API pages are all empty beyond a wallet-connect prompt. The exact purpose of resource/131 is 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'0.02':10,28,88 '000':90 '20':89 '6':96 'Base network API' 'USDC API' 'accept':113,233 'access':6,24,44,110 'across':149 'advertis':101 'agent':203 'ai':78 'analyt':77 'api':5,16,23,34,43,74,103,169 'application/json':119 'base':8,26,55,91 'base-network' 'behind':45,187 'broader':67 'call':73 'categori':150 'challeng':218 'confirm':225 'connect':176 'cost':87 'could':192 'crawl':139 'data':76 'decim':97 'detail':155 'doc':166 'document':136,182,214 'els':201 'endpoint':38,112,148,211,227 'entir':202 'exact':123 'exampl':159 'fall':62 'financ':80 'form':224 'format':128 'function':186 'gate':3,21 'generat':195 'howev':121 'http':114 'http-post' 'infrastructur':83 'input':124 'instant':109 'json-response' 'key':17,35,104 'land':144 'limit':107 'list':146 'live':220 'lowpaymentfee' 'lowpaymentfee.com':40 'mani':147 'materi':140 'micropayment API' 'minim':175 'ml':79 'network':56 'no-api-key' 'opaqu':209 'oper':229 'output':127 'page':145,170 'particular':131 'path':60 'pay':9,27,71 'pay-per-cal':70 'pay-per-call API' 'pay-per-request' 'payload':160 'payment':50,234 'paywal':48 'per':11,29,72 'placehold':198 'platform':68 'post':115 'premium':4,22,42,210 'premium API' 'price':167 'prompt':178 'provid':41,65,100,142,154 'rate':106 'readi':231 'request':12,30,86,116 'request/response':156 'requir':18,36 'resolv':172 'resourc':59,132 'resource/131':133,188 'respons':120 'return':118 'schema':125,157 'settl':49 'someth':200 'span':75 'specif':58,185 'surfac':215 'treat':205 'unclear':190 'unit':92 'usdc':14,32,52,94 'usdc-settlement' 'util':84,196 'wallet':177 'web3':81 'well':223 'well-form':222 'x402':2,20,47,217 'x402 endpoint' 'x402-gated':1,19 'x402-payment'","prices":[{"id":"49cc3c75-6166-47c6-99c6-276ce6db9d40","listingId":"cb7df2af-85be-4513-874f-03b50f7ba750","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/generate/resource/131","description":"Premium API Access","outputSchema":{"input":{"type":"http","method":"GET","discoverable":true}},"maxAmountRequired":"20000","maxTimeoutSeconds":300}],"asset_contract":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","max_timeout_seconds":300},"createdAt":"2026-04-18T18:38:33.985Z"}],"sources":[{"listingId":"cb7df2af-85be-4513-874f-03b50f7ba750","source":"x402_bazaar","sourceId":"https://lowpaymentfee.com/api/v1/generate/resource/131","sourceUrl":"https://api.cdp.coinbase.com/platform/v2/x402/discovery/resources","isPrimary":true,"firstSeenAt":"2026-04-18T18:38:33.985Z","lastSeenAt":"2026-04-28T12:33:33.973Z"}],"details":{"listingId":"cb7df2af-85be-4513-874f-03b50f7ba750","quickStartSnippet":"curl -X POST https://lowpaymentfee.com/api/v1/generate/resource/131 \\\n  -H \"Content-Type: application/json\" \\\n  -H \"X-PAYMENT: <x402-payment-token>\" \\\n  -d '{}'","exampleRequest":null,"exampleResponse":null,"schema":{"input":{"type":"http","method":"GET","discoverable":true}},"openapiUrl":null,"agentsTxtUrl":null,"citations":[{"claim":"Endpoint returns HTTP 402 with x402 challenge advertising USDC on Base network, maxAmountRequired 20000 base units","source_url":"https://lowpaymentfee.com/api/v1/generate/resource/131"},{"claim":"Provider advertises $0.02 per request, no API keys, no rate limits, instant access, Base network","source_url":"https://lowpaymentfee.com"},{"claim":"USDC asset address 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913 on Base","source_url":"https://lowpaymentfee.com/api/v1/generate/resource/131"}],"useCases":["Programmatic access to a premium generation resource via x402 micropayment","Agent-driven workflows that need keyless, pay-as-you-go API access on Base","Testing x402 payment flows with a low-cost live endpoint"],"bestFor":["Agents or developers exploring x402 payment protocol integration","Low-cost per-request API consumption without subscription commitments","Crypto-native workflows settling in USDC on Base"],"notFor":["Users who need detailed API documentation or guaranteed SLAs before integrating","High-volume batch processing where per-request pricing may add up","Anyone needing a clearly specified input/output contract upfront"],"kindDetails":{"x402_version":1,"resource_type":"http","bazaar_last_updated":"2026-02-17T23:14:41.541Z"},"updatedAt":"2026-04-28T12:33:33.973Z"}}