{"id":"38650bc9-402d-4b2f-a0ce-75d3960df270","shortId":"HmWMP7","kind":"x402","title":"Pay-per-request ACH endpoint on Base via x402 — $0.02/call in USDC, no API keys required.","tagline":"Pay-per-request ACH endpoint on Base via x402 — $0.02/call in USDC, no API keys required.","description":"This endpoint at `/api/v1/ach/179` 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 specific function of the `/api/v1/ach/179` route is not documented — the path suggests ACH (Automated Clearing House) banking functionality, but no schema, parameter list, or response format is provided beyond the generic \"Premium API Access\" label.\n\nPricing is $0.02 per request (the x402 challenge advertises a maxAmountRequired of 20,000 base units of USDC, which at 6 decimals equals $0.02). Payment is made inline via the X-PAYMENT header; no API keys, accounts, or rate limits are advertised. The endpoint accepts POST requests and returns `application/json`. The x402 challenge is live and well-formed, confirming the endpoint is operational.\n\nDocumentation is extremely sparse. The provider's docs, pricing, API, and README pages all render only a \"Connect wallet\" prompt with no additional content. There is no OpenAPI spec, no request/response schema, and no description of what the ACH endpoint actually does or what parameters it expects. Prospective callers will need to experiment or contact the provider to understand the input/output contract.","tags":[],"capabilities":["x402-payment","usdc-settlement","base-network","pay-per-request","no-api-key","ach","json-response"],"categories":["finance","payments"],"synonyms":["ACH API","bank transfer API","automated clearing house","x402 payment endpoint","USDC micropayment API","lowpaymentfee","pay-per-call API"],"warnings":["No documentation available — docs, pricing, API, and README pages all show only 'Connect wallet' with no content.","The specific purpose of /api/v1/ach/179 is unknown; 'Premium API Access' is a generic label applied across the platform.","No request or response schema is provided; callers must guess at the input format.","The ACH path implies financial/banking operations which may be subject to regulatory requirements — exercise caution."],"endpointUrl":"https://lowpaymentfee.com/api/v1/ach/179","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/179","description":"Premium API Access","outputSchema":{"input":{"type":"http","method":"GET","discoverable":true}},"maxAmountRequired":"20000","maxTimeoutSeconds":300}]},"qualityScore":"0.250","qualityRationale":"The x402 challenge is live and pricing is clear ($0.02 USDC on Base), but there is zero documentation on what this endpoint actually does, what inputs it expects, or what it returns. No OpenAPI spec, no examples, and the docs pages are empty. This is effectively a stub 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'/call':12,30 '0.02':11,29,119,140 '000':130 '20':129 '6':137 'ACH API' 'USDC micropayment API' 'accept':162 'access':115 'account':154 'ach':5,23,94,220 'actual':222 'addit':204 'advertis':125,159 'ai/ml':60 'analyt':59 'api':16,34,56,114,152,191 'application/json':167 'autom':95 'automated clearing house' 'bank':98 'bank transfer API' 'base':8,26,79,131 'base-network' 'beyond':110 'caller':230 'challeng':124,170 'clear':96 'collect':50 'confirm':177 'connect':199 'contact':236 'content':205 'contract':243 'crypto':63 'data':58 'decim':138 'descript':216 'doc':189 'document':90,182 'endpoint':6,24,38,68,161,179,221 'equal':139 'expect':228 'experi':234 'extrem':184 'financ':62 'form':176 'format':107 'function':83,99 'generic':112 'header':150 'hous':97 'infer':61 'inlin':144 'input/output':242 'json-response' 'key':17,35,153 'label':116 'limit':157 'list':104 'live':172 'lowpaymentfee' 'lowpaymentfee.com':45 'made':143 'maxamountrequir':127 'need':232 'network':80 'no-api-key' 'offer':48 'openapi':209 'oper':181 'page':194 'paramet':103,226 'part':42 'path':92 'pay':2,20,53 'pay-per-call API' 'pay-per-request':1,19,52 'payment':72,141,149 'per':3,21,54,120 'platform':46 'post':163 'premium':113 'price':117,190 'prompt':201 'prospect':229 'protocol':73 'provid':109,187,238 'rate':156 'readm':193 'render':196 'request':4,22,55,121,164 'request/response':212 'requir':18,36 'respons':106 'return':166 'rout':87 'schema':102,213 'servic':66 'settl':74 'span':57 'spars':185 'spec':210 'specif':82 'suggest':93 'understand':240 'unit':132 'usdc':14,32,76,134 'usdc-settlement' 'use':69 'util':65 'via':9,27,145 'wallet':200 'well':175 'well-form':174 'x':148 'x-payment':147 'x402':10,28,71,123,169 'x402 payment endpoint' 'x402-payment'","prices":[{"id":"983794ea-9418-4ffc-bdf5-db7677f4800e","listingId":"38650bc9-402d-4b2f-a0ce-75d3960df270","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/179","description":"Premium API Access","outputSchema":{"input":{"type":"http","method":"GET","discoverable":true}},"maxAmountRequired":"20000","maxTimeoutSeconds":300}],"asset_contract":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","max_timeout_seconds":300},"createdAt":"2026-04-18T18:42:06.435Z"}],"sources":[{"listingId":"38650bc9-402d-4b2f-a0ce-75d3960df270","source":"x402_bazaar","sourceId":"https://lowpaymentfee.com/api/v1/ach/179","sourceUrl":"https://api.cdp.coinbase.com/platform/v2/x402/discovery/resources","isPrimary":true,"firstSeenAt":"2026-04-18T18:42:06.435Z","lastSeenAt":"2026-04-24T22:32:11.329Z"}],"details":{"listingId":"38650bc9-402d-4b2f-a0ce-75d3960df270","quickStartSnippet":"curl -X POST https://lowpaymentfee.com/api/v1/ach/179 \\\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":"Pricing is $0.02 per request across all endpoints","source_url":"https://lowpaymentfee.com"},{"claim":"x402 challenge returns maxAmountRequired of 20000 base units of USDC (0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913) on Base","source_url":"https://lowpaymentfee.com/api/v1/ach/179"},{"claim":"No API keys, no rate limits, instant access advertised","source_url":"https://lowpaymentfee.com"},{"claim":"Docs, pricing, API, and README pages render only 'Connect wallet'","source_url":"https://lowpaymentfee.com/docs"}],"useCases":["Initiating or querying ACH-related banking operations via a single paid API call","Integrating low-cost per-request financial endpoints into agent workflows","Testing x402 payment protocol integrations on Base network"],"bestFor":["Developers experimenting with x402 pay-per-request APIs","Agents needing on-demand ACH-related functionality without subscription commitments","Projects that want to pay in USDC on Base with no account setup"],"notFor":["Users who need detailed API documentation or guaranteed SLAs before integrating","High-volume batch ACH processing where per-request pricing is inefficient","Anyone requiring non-crypto payment rails"],"kindDetails":{"x402_version":1,"resource_type":"http","bazaar_last_updated":"2026-02-17T23:14:31.295Z"},"updatedAt":"2026-04-24T22:32:11.329Z"}}