{"id":"188359e5-d048-4c32-bdfa-8ce1f0e2cc2d","shortId":"LjBP7x","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/176` 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 (20,000 base units of USDC with 6 decimals). No API keys, rate limits, or upfront commitments are required — callers simply attach an x402 payment header to each request.\n\nThe specific function of the `/api/v1/ach/176` endpoint is not documented beyond the generic label \"Premium API Access.\" The provider's landing page lists numerous categorized APIs (analytics, AI, finance, infrastructure) but does not include this particular ACH path among them. It may relate to ACH (Automated Clearing House) payment processing or financial data, but this is speculative. The endpoint is confirmed live, returning a valid x402 402 challenge with an `exact` payment scheme. It accepts POST requests and returns `application/json`.\n\nThe broader lowpaymentfee.com platform advertises uniform $0.02 pricing across all endpoints, with no minimums and instant access. Documentation pages (`/docs`, `/pricing`, `/api`, `/README`) all rendered only a \"Connect wallet\" prompt with no substantive content, so detailed request/response schemas are unavailable.","tags":[],"capabilities":["x402-payment","usdc-base-network","pay-per-request","no-api-key","json-response","ach-endpoint","post-method"],"categories":["finance","infrastructure"],"synonyms":["ACH API","payment processing API","x402 micropayment","USDC pay-per-call","lowpaymentfee","Base network API","automated clearing house"],"warnings":["The specific function of /api/v1/ach/176 is not documented anywhere on the provider's site","All documentation pages (/docs, /pricing, /api, /README) contain no substantive content — only a 'Connect wallet' prompt","The endpoint path suggests ACH (Automated Clearing House) functionality but this is unconfirmed","No request or response schema is available; callers must experiment to discover the API contract"],"endpointUrl":"https://lowpaymentfee.com/api/v1/ach/176","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/176","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, but the specific purpose of /api/v1/ach/176 is undocumented. All doc pages render only 'Connect wallet' with no schemas, examples, or descriptions. The listing is effectively a stub with confirmed liveness but no functional 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'/api/v1/ach/176':40,122 '/docs':216 '/pricing':217 '/readme':219 '/request':12,30 '0.02':11,29,85,203 '000':89 '20':88 '402':183 '6':95 'ACH API' 'Base network API' 'USDC pay-per-call' 'accept':191 'access':133,213 'ach':5,23,153,161 'ach-endpoint' 'across':205 'advertis':201 'ai':144 'ai/ml':60 'among':155 'analyt':59,143 'api':16,34,56,98,132,142 'application/json':196 'attach':109 'autom':162 'automated clearing house' 'base':8,26,79,90 'beyond':127 'broader':198 'call':4,22 'caller':107 'categor':141 'challeng':184 'clear':163 'collect':50 'commit':104 'confirm':177 'connect':224 'content':230 'crypto':63 'data':58,169 'decim':96 'detail':232 'document':126,214 'endpoint':6,24,38,68,123,175,207 'exact':187 'financ':62,145 'financi':168 'function':119 'generic':129 'header':113 'hous':164 'includ':150 'infer':61 'infrastructur':146 'instant':212 'json-response' 'key':17,35,99 'label':130 'land':137 'limit':101 'list':82,139 'live':178 'lowpaymentfee' 'lowpaymentfee.com':45,199 'may':158 'minimum':210 'network':80 'no-api-key' 'numer':140 'offer':48 'page':138,215 'part':42 'particular':152 'path':154 'pay':2,20,53 'pay-per-cal':1,19 'pay-per-request':52 'payment':72,112,165,188 'payment processing API' 'per':3,21,54,86 'platform':46,200 'post':192 'post-method' 'premium':131 'price':83,204 'process':166 'prompt':226 'protocol':73 'provid':135 'rate':100 'relat':159 'render':221 'request':55,87,116,193 'request/response':233 'requir':18,36,106 'return':179,195 'schema':234 'scheme':189 'servic':66 'settl':74 'simpli':108 'span':57 'specif':118 'specul':173 'substant':229 'unavail':236 'uniform':202 'unit':91 'upfront':103 'usdc':14,32,76,93 'usdc-base-network' 'use':69 'util':65 'valid':181 'via':9,27 'wallet':225 'x402':10,28,71,111,182 'x402 micropayment' 'x402-payment'","prices":[{"id":"dab13f46-60e6-40ef-b4d8-961d5d16e322","listingId":"188359e5-d048-4c32-bdfa-8ce1f0e2cc2d","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/176","description":"Premium API Access","outputSchema":{"input":{"type":"http","method":"GET","discoverable":true}},"maxAmountRequired":"20000","maxTimeoutSeconds":300}],"asset_contract":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","max_timeout_seconds":300},"createdAt":"2026-04-18T18:42:05.797Z"}],"sources":[{"listingId":"188359e5-d048-4c32-bdfa-8ce1f0e2cc2d","source":"x402_bazaar","sourceId":"https://lowpaymentfee.com/api/v1/ach/176","sourceUrl":"https://api.cdp.coinbase.com/platform/v2/x402/discovery/resources","isPrimary":true,"firstSeenAt":"2026-04-18T18:42:05.797Z","lastSeenAt":"2026-04-27T14:04:43.135Z"}],"details":{"listingId":"188359e5-d048-4c32-bdfa-8ce1f0e2cc2d","quickStartSnippet":"curl -X POST https://lowpaymentfee.com/api/v1/ach/176 \\\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":"The platform advertises $0.02/request pricing with no API keys, no rate limits, and instant access on the Base network","source_url":"https://lowpaymentfee.com"},{"claim":"The x402 challenge specifies maxAmountRequired of 20000 base units of USDC (asset 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913) on Base, equaling $0.02","source_url":"https://lowpaymentfee.com/api/v1/ach/176"},{"claim":"Documentation pages render only a 'Connect wallet' prompt with no API documentation","source_url":"https://lowpaymentfee.com/docs"}],"useCases":["Programmatic access to an ACH-related service with per-call USDC micropayments","Agent-driven financial data or payment initiation without pre-registration","Integrating pay-as-you-go API calls into automated workflows on Base"],"bestFor":["Developers wanting zero-signup, pay-per-use API access","AI agents that can settle x402 payments in USDC on Base","Users needing ACH-related functionality without subscription commitments"],"notFor":["Users who need detailed API documentation or schemas before integrating","High-volume callers who would benefit from bulk pricing or rate-limited tiers","Anyone requiring non-crypto payment methods"],"kindDetails":{"x402_version":1,"resource_type":"http","bazaar_last_updated":"2026-02-17T23:14:31.298Z"},"updatedAt":"2026-04-27T14:04:43.135Z"}}