{"id":"64fe29a2-530f-4fda-ae86-c960c602826f","shortId":"hhWr3y","kind":"x402","title":"Pay-per-call ACH endpoint on Base via x402 — $0.02/request in USDC, no API keys required.","tagline":"Pay-per-call ACH endpoint on Base via x402 — $0.02/request in USDC, no API keys required.","description":"This endpoint at `/api/v1/ach/92` is part of the lowpaymentfee.com platform, which offers a collection of pay-per-request APIs spanning data analytics, AI/ML inference, finance, crypto, and utility services. All endpoints use the x402 payment protocol, settling in USDC on the Base network. The listed price is $0.02 per request with no API keys, no rate limits, and no minimum commitments.\n\nThe specific endpoint `/api/v1/ach/92` is labeled \"Premium API Access\" but its actual functionality is unclear — the path suggests ACH (Automated Clearing House) banking or payment-related data, but no documentation, request/response schemas, or examples are available. The x402 challenge confirms the endpoint is live and accepts POST requests, requiring up to 20,000 base units of USDC (i.e., $0.02) per call on the Base network. Payment is made via the x402 `exact` scheme to the specified wallet address.\n\nThe broader lowpaymentfee.com platform lists 16+ endpoints across categories like sentiment analysis, text summarization, geocoding, price feeds, and more — all at the same $0.02 price point. However, documentation pages (`/docs`, `/pricing`, `/README`) returned only a \"Connect wallet\" prompt with no substantive content, so the actual capabilities, input formats, and response structures of this or any endpoint remain unverified.","tags":[],"capabilities":["x402-payment","usdc-settlement","base-network","pay-per-request","no-api-key","ach-endpoint"],"categories":["finance","infrastructure"],"synonyms":["ACH API","payment processing API","lowpaymentfee","x402 API","USDC micropayment API","Base network API","pay-per-call API"],"warnings":["The actual functionality of /api/v1/ach/92 is unknown — 'Premium API Access' is a generic label with no specification","All documentation pages (/docs, /pricing, /README) returned no substantive content","No OpenAPI spec, input schema, or response schema is available","The endpoint path 'ach/92' is not listed among the provider's advertised APIs on the homepage, raising questions about what it actually does"],"endpointUrl":"https://lowpaymentfee.com/api/v1/ach/92","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/ach/92","description":"Premium API Access","outputSchema":{"input":{"type":"http","method":"GET","discoverable":true}},"maxAmountRequired":"20000","maxTimeoutSeconds":300}]},"qualityScore":"0.250","qualityRationale":"The endpoint is live (402 challenge confirmed) and pricing is clear ($0.02 USDC on Base), but there is no documentation, no request/response schema, no examples, and the actual functionality of '/api/v1/ach/92' is undefined. Documentation pages all returned only 'Connect wallet' with no 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'/docs':207 '/pricing':208 '/readme':209 '/request':12,30 '0.02':11,29,85,158,201 '000':152 '16':183 '20':151 'ACH API' 'Base network API' 'USDC micropayment API' 'accept':145 'access':107 'ach':5,23,117 'ach-endpoint' 'across':185 'actual':110,222 'address':177 'ai/ml':60 'analysi':189 'analyt':59 'api':16,34,56,90,106 'autom':118 'avail':135 'bank':121 'base':8,26,79,153,163 'base-network' 'broader':179 'call':4,22,160 'capabl':223 'categori':186 'challeng':138 'clear':119 'collect':50 'commit':98 'confirm':139 'connect':213 'content':219 'crypto':63 'data':58,126 'document':129,205 'endpoint':6,24,38,68,101,141,184,233 'exact':171 'exampl':133 'feed':194 'financ':62 'format':225 'function':111 'geocod':192 'hous':120 'howev':204 'i.e':157 'infer':61 'input':224 'key':17,35,91 'label':104 'like':187 'limit':94 'list':82,182 'live':143 'lowpaymentfee' 'lowpaymentfee.com':45,180 'made':167 'minimum':97 'network':80,164 'no-api-key' 'offer':48 'page':206 'part':42 'path':115 'pay':2,20,53 'pay-per-cal':1,19 'pay-per-call API' 'pay-per-request':52 'payment':72,124,165 'payment processing API' 'payment-rel':123 'per':3,21,54,86,159 'platform':46,181 'point':203 'post':146 'premium':105 'price':83,193,202 'prompt':215 'protocol':73 'rate':93 'relat':125 'remain':234 'request':55,87,147 'request/response':130 'requir':18,36,148 'respons':227 'return':210 'schema':131 'scheme':172 'sentiment':188 'servic':66 'settl':74 'span':57 'specif':100 'specifi':175 'structur':228 'substant':218 'suggest':116 'summar':191 'text':190 'unclear':113 'unit':154 'unverifi':235 'usdc':14,32,76,156 'usdc-settlement' 'use':69 'util':65 'via':9,27,168 'wallet':176,214 'x402':10,28,71,137,170 'x402 API' 'x402-payment'","prices":[{"id":"69239bd6-6915-4a39-a3a8-ef5755636c2e","listingId":"64fe29a2-530f-4fda-ae86-c960c602826f","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/ach/92","description":"Premium API Access","outputSchema":{"input":{"type":"http","method":"GET","discoverable":true}},"maxAmountRequired":"20000","maxTimeoutSeconds":300}],"asset_contract":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","max_timeout_seconds":300},"createdAt":"2026-04-18T18:42:23.490Z"}],"sources":[{"listingId":"64fe29a2-530f-4fda-ae86-c960c602826f","source":"x402_bazaar","sourceId":"https://lowpaymentfee.com/api/v1/ach/92","sourceUrl":"https://api.cdp.coinbase.com/platform/v2/x402/discovery/resources","isPrimary":true,"firstSeenAt":"2026-04-18T18:42:23.490Z","lastSeenAt":"2026-04-27T11:03:51.803Z"}],"details":{"listingId":"64fe29a2-530f-4fda-ae86-c960c602826f","quickStartSnippet":"curl -X POST https://lowpaymentfee.com/api/v1/ach/92 \\\n  -H \"Content-Type: application/json\" \\\n  -H \"X-PAYMENT: <x402-payment-header>\" \\\n  -d '{}'","exampleRequest":null,"exampleResponse":null,"schema":{"input":{"type":"http","method":"GET","discoverable":true}},"openapiUrl":null,"agentsTxtUrl":null,"citations":[{"claim":"The endpoint returns a 402 challenge requiring up to 20,000 base units of USDC on Base network","source_url":"https://lowpaymentfee.com/api/v1/ach/92"},{"claim":"The platform advertises $0.02/request pricing with no API keys, no rate limits, and instant access","source_url":"https://lowpaymentfee.com"},{"claim":"USDC asset contract on Base: 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","source_url":"https://lowpaymentfee.com/api/v1/ach/92"},{"claim":"Documentation pages returned only 'Connect wallet' with no substantive content","source_url":"https://lowpaymentfee.com/docs"}],"useCases":["Accessing ACH or payment-related data on a per-request basis without subscription","Agent-driven financial data retrieval with automatic USDC micropayments","Integrating pay-as-you-go banking or clearing house information into workflows"],"bestFor":["Developers wanting zero-commitment, pay-per-call API access","AI agents that can settle payments via x402 on Base","Users who prefer crypto-native micropayments over traditional API key subscriptions"],"notFor":["Users needing well-documented APIs with clear request/response schemas","High-volume use cases where per-request pricing may add up","Anyone requiring fiat-only payment methods"],"kindDetails":{"x402_version":1,"resource_type":"http","bazaar_last_updated":"2026-02-17T23:14:30.473Z"},"updatedAt":"2026-04-27T11:03:51.803Z"}}