{"id":"a8419c99-9706-492b-af0f-493fd62b8628","shortId":"NJVeBB","kind":"x402","title":"Pay-per-call premium API access on Base via x402 — $0.02/request in USDC.","tagline":"Pay-per-call premium API access on Base via x402 — $0.02/request in USDC.","description":"This endpoint at lowpaymentfee.com is part of a broader suite of x402-gated APIs covering data & analytics, AI/ML inference, finance & Web3 data, and infrastructure utilities. The specific resource `/api/v1/generate/resource/192` is listed under \"Premium API Access\" and accepts POST requests, settling payments in USDC on the Base network at $0.02 per call (20,000 base units with 6 decimals). No API keys or rate limits are advertised; callers pay per request using the x402 protocol.\n\nThe provider's landing page lists roughly 16 endpoints across four categories: Data & Analytics (metrics, reports, data export, insights), AI & Machine Learning (sentiment analysis, text summarization, classification, embeddings), Finance & Web3 (price feeds, exchange rates, token quotes, gas estimates), and Infrastructure (geocoding, validation, conversion, generation). All endpoints are priced uniformly at $0.02 per request. The x402 challenge for this specific resource was captured live and confirms the endpoint is operational.\n\nDocumentation is extremely sparse — the /docs, /api, /pricing, and /README pages all returned only a \"Connect wallet\" prompt with no further technical detail. There is no OpenAPI spec, no request/response schema documentation, and no usage examples available. The exact functionality behind \"Premium API Access\" at resource/192 is unclear from the available material, making it difficult to determine what data or service this particular endpoint returns.","tags":[],"capabilities":["x402-payment","usdc-settlement","base-network","pay-per-request","no-api-key","post-endpoint"],"categories":["infrastructure","api-gateway"],"synonyms":["x402 API","pay-per-call API","USDC micropayment API","Base network API","lowpaymentfee","premium API access","crypto-paid API"],"warnings":["No documentation available — /docs, /api, /pricing, and /README pages all return only 'Connect wallet' with no content.","No OpenAPI or schema definition found; request and response formats are unknown.","The exact functionality of /api/v1/generate/resource/192 ('Premium API Access') is not described anywhere in the crawled material.","Cannot verify what data or service this specific endpoint returns without making a paid request."],"endpointUrl":"https://lowpaymentfee.com/api/v1/generate/resource/192","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/192","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 confirms pricing and payment details, but there is zero documentation on what this endpoint actually does. No OpenAPI spec, no request/response schema, no examples. The endpoint name 'Premium API Access' at resource/192 is generic and uninformative. Effectively a stub 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'/api/v1/generate/resource/192':60 '/docs':180 '/pricing':182 '/readme':184 '/request':13,28 '0.02':12,27,80,156 '000':84 '16':113 '20':83 '6':88 'Base network API' 'USDC micropayment API' 'accept':68 'access':7,22,66,218 'across':115 'advertis':97 'ai':125 'ai/ml':49 'analysi':129 'analyt':48,119 'api':6,21,45,65,91,217 'avail':211,225 'base':9,24,77,85 'base-network' 'behind':215 'broader':39 'call':4,19,82 'caller':98 'captur':167 'categori':117 'challeng':161 'classif':132 'confirm':170 'connect':190 'convers':148 'cover':46 'crypto-paid API' 'data':47,53,118,122,233 'decim':89 'detail':197 'determin':231 'difficult':229 'document':175,206 'embed':133 'endpoint':32,114,151,172,238 'estim':143 'exact':213 'exampl':210 'exchang':138 'export':123 'extrem':177 'feed':137 'financ':51,134 'four':116 'function':214 'gas':142 'gate':44 'generat':149 'geocod':146 'infer':50 'infrastructur':55,145 'insight':124 'key':92 'land':109 'learn':127 'limit':95 'list':62,111 'live':168 'lowpaymentfee' 'lowpaymentfee.com':34 'machin':126 'make':227 'materi':226 'metric':120 'network':78 'no-api-key' 'openapi':201 'oper':174 'page':110,185 'part':36 'particular':237 'pay':2,17,99 'pay-per-cal':1,16 'pay-per-call API' 'pay-per-request' 'payment':72 'per':3,18,81,100,157 'post':69 'post-endpoint' 'premium':5,20,64,216 'premium API access' 'price':136,153 'prompt':192 'protocol':105 'provid':107 'quot':141 'rate':94,139 'report':121 'request':70,101,158 'request/response':204 'resourc':59,165 'resource/192':220 'return':187,239 'rough':112 'schema':205 'sentiment':128 'servic':235 'settl':71 'spars':178 'spec':202 'specif':58,164 'suit':40 'summar':131 'technic':196 'text':130 'token':140 'unclear':222 'uniform':154 'unit':86 'usag':209 'usdc':15,30,74 'usdc-settlement' 'use':102 'util':56 'valid':147 'via':10,25 'wallet':191 'web3':52,135 'x402':11,26,43,104,160 'x402 API' 'x402-gated':42 'x402-payment'","prices":[{"id":"4c415c9a-2467-432e-9bd9-b8a7c9381c77","listingId":"a8419c99-9706-492b-af0f-493fd62b8628","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/192","description":"Premium API Access","outputSchema":{"input":{"type":"http","method":"GET","discoverable":true}},"maxAmountRequired":"20000","maxTimeoutSeconds":300}],"asset_contract":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","max_timeout_seconds":300},"createdAt":"2026-04-18T18:37:02.878Z"}],"sources":[{"listingId":"a8419c99-9706-492b-af0f-493fd62b8628","source":"x402_bazaar","sourceId":"https://lowpaymentfee.com/api/v1/generate/resource/192","sourceUrl":"https://api.cdp.coinbase.com/platform/v2/x402/discovery/resources","isPrimary":true,"firstSeenAt":"2026-04-18T18:37:02.878Z","lastSeenAt":"2026-04-24T11:31:43.833Z"}],"details":{"listingId":"a8419c99-9706-492b-af0f-493fd62b8628","quickStartSnippet":"curl -X POST https://lowpaymentfee.com/api/v1/generate/resource/192 \\\n  -H \"Content-Type: application/json\" \\\n  -H \"X-PAYMENT: <x402-payment-token>\" \\\n  -d '{}'","exampleRequest":{"url":"https://lowpaymentfee.com/api/v1/generate/resource/192","body":{},"method":"POST","headers":{"X-PAYMENT":"<x402-payment-token>","Content-Type":"application/json"}},"exampleResponse":null,"schema":{"input":{"type":"http","method":"GET","discoverable":true}},"openapiUrl":null,"agentsTxtUrl":null,"citations":[{"claim":"The endpoint returns a 402 challenge requesting USDC payment on Base network with maxAmountRequired of 20000 base units","source_url":"https://lowpaymentfee.com/api/v1/generate/resource/192"},{"claim":"All endpoints are priced at $0.02 per request with no API keys, no rate limits, and instant access on Base network","source_url":"https://lowpaymentfee.com"},{"claim":"The provider lists ~16 endpoints across Data & Analytics, AI & ML, Finance & Web3, and Infrastructure categories","source_url":"https://lowpaymentfee.com"},{"claim":"USDC asset address 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913 on Base network","source_url":"https://lowpaymentfee.com/api/v1/generate/resource/192"}],"useCases":["Accessing premium API resources with per-call USDC micropayments on Base","Agent-driven workflows that need keyless, pay-as-you-go API access","Programmatic access to utility/generation endpoints without subscription commitments"],"bestFor":["Developers wanting zero-commitment, pay-per-use API access","AI agents that can settle x402 payments autonomously on Base","Projects needing low-cost ($0.02) per-request API calls without rate limits"],"notFor":["Users who need detailed API documentation or OpenAPI specs before integrating","High-volume consumers who would benefit from bulk pricing or subscriptions","Anyone without a Base-compatible USDC wallet"],"kindDetails":{"x402_version":1,"resource_type":"http","bazaar_last_updated":"2026-02-17T23:14:46.052Z"},"updatedAt":"2026-04-24T11:31:43.833Z"}}