{"id":"004c5aa3-e7a6-4b99-84c1-7ef71679f17a","shortId":"TVErtY","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/194` is part of the lowpaymentfee.com platform, which offers a collection of pay-per-request APIs spanning data & analytics, AI/ML, finance/Web3, and infrastructure utilities. All endpoints use the x402 payment protocol, settling in USDC on the Base network. The pricing is uniform at $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 endpoint `/api/v1/ach/194` is listed under the title \"Premium API Access\" but its actual functionality is not documented beyond that label. The provider's landing page groups endpoints into categories (Data & Analytics, AI & ML, Finance & Web3, Infrastructure), but this particular path (`/ach/194`) does not appear in any of those listed categories. It accepts POST requests and returns `application/json`. Without further documentation or example responses, the exact data or service this endpoint provides cannot be confirmed.\n\nThe platform's docs, pricing, and API pages all render only a \"Connect wallet\" prompt with no additional technical documentation, so details about request/response schemas, error handling, and the specific purpose of the `/ach/194` route remain unknown.","tags":[],"capabilities":["x402-payment","usdc-settlement","base-network","pay-per-request","no-api-key","json-response","post-method"],"categories":["finance","infrastructure"],"synonyms":["ACH API","payment API","lowpaymentfee","x402 endpoint","USDC pay-per-call","Base network API","micropayment API"],"warnings":["The exact purpose and functionality of /api/v1/ach/194 is unknown — it does not appear in the provider's listed API catalog.","All documentation pages (docs, pricing, API, README) render only 'Connect wallet' with no technical content.","No request or response schema is available; integration requires trial-and-error or contacting the provider.","The 'Premium API Access' title is generic and may be a placeholder."],"endpointUrl":"https://lowpaymentfee.com/api/v1/ach/194","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/194","description":"Premium API Access","outputSchema":{"input":{"type":"http","method":"GET","discoverable":true}},"maxAmountRequired":"20000","maxTimeoutSeconds":300}]},"qualityScore":"0.300","qualityRationale":"The endpoint is live (returns a valid 402 x402 challenge) and pricing is clear ($0.02 USDC on Base), but the specific functionality of /api/v1/ach/194 is undocumented. No request/response schemas, no examples, and the docs pages are empty beyond a wallet-connect prompt. The 'Premium API Access' title is generic and 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'/api/v1/ach/194':40,119 '/request':12,30 '0.02':11,29,84 '000':88 '20':87 '6':94 'ACH API' 'Base network API' 'USDC pay-per-call' 'accept':169 'access':127 'ach':5,23 'actual':130 'addit':209 'ai':149 'ai/ml':60 'analyt':59,148 'api':16,34,56,97,126,198 'appear':161 'application/json':174 'attach':108 'base':8,26,77,89 'base-network' 'beyond':135 'call':4,22 'caller':106 'cannot':189 'categori':146,167 'collect':50 'commit':103 'confirm':191 'connect':204 'data':58,147,183 'decim':95 'detail':213 'doc':195 'document':134,177,211 'endpoint':6,24,38,66,118,144,187 'error':217 'exact':182 'exampl':179 'financ':151 'finance/web3':61 'function':131 'group':143 'handl':218 'header':112 'infrastructur':63,153 'json-response' 'key':17,35,98 'label':137 'land':141 'limit':100 'list':121,166 'lowpaymentfee' 'lowpaymentfee.com':45 'micropayment API' 'ml':150 'network':78 'no-api-key' 'offer':48 'page':142,199 'part':42 'particular':156 'path':157 'pay':2,20,53 'pay-per-cal':1,19 'pay-per-request':52 'payment':70,111 'payment API' 'per':3,21,54,85 'platform':46,193 'post':170 'post-method' 'premium':125 'price':80,196 'prompt':206 'protocol':71 'provid':139,188 'purpos':222 'rate':99 'remain':227 'render':201 'request':55,86,115,171 'request/response':215 'requir':18,36,105 'respons':180 'return':173 'rout':226 'schema':216 'servic':185 'settl':72 'simpli':107 'span':57 'specif':117,221 'technic':210 'titl':124 'uniform':82 'unit':90 'unknown':228 'upfront':102 'usdc':14,32,74,92 'usdc-settlement' 'use':67 'util':64 'via':9,27 'wallet':205 'web3':152 'without':175 'x402':10,28,69,110 'x402 endpoint' 'x402-payment'","prices":[{"id":"a6eeb72f-2c1e-476c-b25c-b36c6f5447c2","listingId":"004c5aa3-e7a6-4b99-84c1-7ef71679f17a","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/194","description":"Premium API Access","outputSchema":{"input":{"type":"http","method":"GET","discoverable":true}},"maxAmountRequired":"20000","maxTimeoutSeconds":300}],"asset_contract":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","max_timeout_seconds":300},"createdAt":"2026-04-18T18:42:12.526Z"}],"sources":[{"listingId":"004c5aa3-e7a6-4b99-84c1-7ef71679f17a","source":"x402_bazaar","sourceId":"https://lowpaymentfee.com/api/v1/ach/194","sourceUrl":"https://api.cdp.coinbase.com/platform/v2/x402/discovery/resources","isPrimary":true,"firstSeenAt":"2026-04-18T18:42:12.526Z","lastSeenAt":"2026-04-27T12:13:02.291Z"}],"details":{"listingId":"004c5aa3-e7a6-4b99-84c1-7ef71679f17a","quickStartSnippet":"curl -X POST https://lowpaymentfee.com/api/v1/ach/194 \\\n  -H \"Content-Type: application/json\" \\\n  -H \"X-PAYMENT: <x402-payment-token>\"","exampleRequest":null,"exampleResponse":null,"schema":{"input":{"type":"http","method":"GET","discoverable":true}},"openapiUrl":null,"agentsTxtUrl":null,"citations":[{"claim":"The endpoint returns a 402 x402 challenge with maxAmountRequired of 20000 base units of USDC on Base","source_url":"https://lowpaymentfee.com/api/v1/ach/194"},{"claim":"USDC asset address 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913 on Base network","source_url":"https://lowpaymentfee.com/api/v1/ach/194"},{"claim":"Platform pricing is $0.02 per request with no API keys, no rate limits, and instant access","source_url":"https://lowpaymentfee.com"},{"claim":"The /api/v1/ach/194 path does not appear in the provider's listed API catalog on the landing page","source_url":"https://lowpaymentfee.com"},{"claim":"Documentation pages render only a 'Connect wallet' prompt with no technical content","source_url":"https://lowpaymentfee.com/docs"}],"useCases":["Accessing a premium ACH-related data or processing endpoint with per-call USDC micropayments","Integrating pay-per-use API calls into agent workflows without managing API keys","Testing x402 payment protocol integrations on Base"],"bestFor":["Developers experimenting with x402 pay-per-call protocols","Agents that need keyless, on-demand API access settled in USDC on Base","Low-volume or sporadic usage where subscription pricing is wasteful"],"notFor":["Users who need detailed API documentation or guaranteed SLAs before integrating","High-volume consumers who would benefit from bulk/subscription pricing"],"kindDetails":{"x402_version":1,"resource_type":"http","bazaar_last_updated":"2026-02-17T23:14:31.061Z"},"updatedAt":"2026-04-27T12:13:02.291Z"}}