{"id":"8fd795b3-738c-4588-a506-39284b75d721","shortId":"8urS5d","kind":"x402","title":"Pay-per-request premium API access via x402 on Base network using USDC.","tagline":"Pay-per-request premium API access via x402 on Base network using USDC.","description":"This endpoint at lowpaymentfee.com provides a \"Premium API Access\" resource behind an x402 paywall. The site hosts a broad collection of pay-per-request APIs spanning data & analytics, AI & machine learning, finance & Web3, and infrastructure utilities — all priced at $0.02 per request with no API keys, no rate limits, and no commitments required.\n\nThe specific endpoint `/api/v1/generate/resource/122` accepts POST requests and returns `application/json`. Payment is handled via the x402 protocol on the Base network, accepting USDC (contract `0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913`) with a max amount of 20,000 units (likely 0.02 USDC given 6 decimals). The payment timeout is 300 seconds.\n\nHowever, the exact functionality of this particular resource (`resource/122`) is unclear. The site's landing page lists various named endpoints (metrics, reports, sentiment analysis, summarization, etc.), but none map directly to `/api/v1/generate/resource/122`. The docs, pricing, and API pages all render only a \"Connect wallet\" prompt with no further documentation. Without additional schema information or documentation, the precise input/output behavior of this endpoint cannot be determined.","tags":[],"capabilities":["x402-payment","pay-per-request","usdc-payment","base-network","json-response","http-post"],"categories":["api","infrastructure"],"synonyms":["premium API","pay-per-call API","x402 endpoint","USDC API","micropayment API","lowpaymentfee","resource generation"],"warnings":["The exact functionality of /api/v1/generate/resource/122 is unknown — it does not appear in the site's listed endpoints","All documentation pages (docs, pricing, API, README) render only 'Connect wallet' with no usable content","No input schema or output schema beyond basic HTTP method and mime type is provided","The site lists many diverse API categories but provides no evidence any of them return real data"],"endpointUrl":"https://lowpaymentfee.com/api/v1/generate/resource/122","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/122","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 402 challenge, but there is no documentation, no OpenAPI schema, no input/output examples, and the specific resource's purpose is unknown. The docs pages are empty beyond a wallet connect prompt. This is effectively a stub 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'0.02':69,117 '000':114 '0x833589fcd6edb6e08f4c7c32d4f71b54bda02913':107 '20':113 '300':126 '6':120 'USDC API' 'accept':87,104 'access':7,21,37 'addit':178 'ai':58 'amount':111 'analysi':151 'analyt':57 'api':6,20,36,54,74,164 'application/json':92 'base':11,25,102 'base-network' 'behavior':186 'behind':39 'broad':47 'cannot':190 'collect':48 'commit':81 'connect':170 'contract':106 'data':56 'decim':121 'determin':192 'direct':157 'doc':161 'document':176,182 'endpoint':30,85,147,189 'etc':153 'exact':130 'financ':61 'function':131 'given':119 'handl':95 'host':45 'howev':128 'http-post' 'inform':180 'infrastructur':64 'input/output':185 'json-response' 'key':75 'land':142 'learn':60 'like':116 'limit':78 'list':144 'lowpaymentfee' 'lowpaymentfee.com':32 'machin':59 'map':156 'max':110 'metric':148 'micropayment API' 'name':146 'network':12,26,103 'none':155 'page':143,165 'particular':134 'pay':2,16,51 'pay-per-call API' 'pay-per-request':1,15,50 'payment':93,123 'paywal':42 'per':3,17,52,70 'post':88 'precis':184 'premium':5,19,35 'premium API' 'price':67,162 'prompt':172 'protocol':99 'provid':33 'rate':77 'render':167 'report':149 'request':4,18,53,71,89 'requir':82 'resourc':38,135 'resource generation' 'resource/122':136 'return':91 'schema':179 'second':127 'sentiment':150 'site':44,140 'span':55 'specif':84 'summar':152 'timeout':124 'unclear':138 'unit':115 'usdc':14,28,105,118 'usdc-payment' 'use':13,27 'util':65 'various':145 'via':8,22,96 'wallet':171 'web3':62 'without':177 'x402':9,23,41,98 'x402 endpoint' 'x402-payment'","prices":[{"id":"af288c8a-b4e0-47eb-a3d6-5c746fff1d6d","listingId":"8fd795b3-738c-4588-a506-39284b75d721","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/122","description":"Premium API Access","outputSchema":{"input":{"type":"http","method":"GET","discoverable":true}},"maxAmountRequired":"20000","maxTimeoutSeconds":300}],"asset_contract":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","max_timeout_seconds":300},"createdAt":"2026-04-18T18:32:02.109Z"}],"sources":[{"listingId":"8fd795b3-738c-4588-a506-39284b75d721","source":"x402_bazaar","sourceId":"https://lowpaymentfee.com/api/v1/generate/resource/122","sourceUrl":"https://api.cdp.coinbase.com/platform/v2/x402/discovery/resources","isPrimary":true,"firstSeenAt":"2026-04-18T18:32:02.109Z","lastSeenAt":"2026-04-23T04:00:38.732Z"}],"details":{"listingId":"8fd795b3-738c-4588-a506-39284b75d721","quickStartSnippet":"curl -X POST https://lowpaymentfee.com/api/v1/generate/resource/122\n# Returns 402 with x402 challenge; include X-PAYMENT header with valid payment proof to access.","exampleRequest":null,"exampleResponse":null,"schema":{"input":{"type":"http","method":"GET","discoverable":true}},"openapiUrl":null,"agentsTxtUrl":null,"citations":[{"claim":"The endpoint returns a 402 challenge with x402Version 1 on POST, accepting USDC on Base network","source_url":"https://lowpaymentfee.com/api/v1/generate/resource/122"},{"claim":"maxAmountRequired is 20000 units with asset contract 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913 (USD Coin)","source_url":"https://lowpaymentfee.com/api/v1/generate/resource/122"},{"claim":"Site advertises $0.02 per request, no API keys, no rate limits, instant access on Base network","source_url":"https://lowpaymentfee.com"},{"claim":"Documentation pages render only a 'Connect wallet' prompt with no further content","source_url":"https://lowpaymentfee.com/docs"}],"useCases":["Accessing a premium API resource without needing API keys or subscriptions","Making one-off paid API calls using USDC on the Base network","Agent-driven programmatic access to paid endpoints via x402 protocol"],"bestFor":["Developers wanting keyless, pay-per-use API access","AI agents that can handle x402 payment challenges autonomously","Users who prefer crypto micropayments over traditional billing"],"notFor":["Users needing detailed API documentation before committing","High-volume use cases where per-request pricing may be expensive","Anyone without access to USDC on the Base network"],"kindDetails":{"x402_version":1,"resource_type":"http","bazaar_last_updated":"2026-02-17T23:15:00.834Z"},"updatedAt":"2026-04-23T04:00:38.732Z"}}