{"id":"4f496f47-e1fd-44ef-a311-ff773f83230c","shortId":"LrcyLL","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/195` 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 platform advertises a flat $0.02 per request with no API keys, no rate limits, and no minimum commitments.\n\nThe specific endpoint `/api/v1/ach/195` is listed under the title \"Premium API Access\" but its exact functionality is unclear — the path suggests ACH (Automated Clearing House) payment-related data or processing, but no documentation, request/response schema, or usage examples are available. The x402 challenge confirms the endpoint is live, accepts POST requests, and requires up to 20,000 base units of USDC (0.02 USDC = $0.02) per call, paid to address `0x1A2B13E97f5F837C8F9FA1F95a1484B7C70d85F3` on Base.\n\nThe provider's documentation pages (`/docs`, `/api`, `/pricing`, `/README`) all returned only a \"Connect wallet\" prompt with no substantive content, so the actual request format, expected input parameters, and response structure for this endpoint remain unknown. Prospective callers should be aware that without documented schemas, integration requires experimentation or direct contact with the provider.","tags":[],"capabilities":["x402-payment","usdc-settlement","base-network","pay-per-request","no-api-key","ach-endpoint"],"categories":["finance","payments"],"synonyms":["ACH API","payment processing API","lowpaymentfee","x402 ACH","USDC pay-per-call","Base network API","automated clearing house"],"warnings":["No documentation available — all doc pages (/docs, /api, /pricing, /README) return only 'Connect wallet' with no content","No request or response schema provided; the endpoint's actual functionality is unknown","The endpoint path suggests ACH payment functionality but this is unconfirmed","The generic title 'Premium API Access' provides no specificity about what the endpoint returns"],"endpointUrl":"https://lowpaymentfee.com/api/v1/ach/195","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/195","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 zero documentation on what this endpoint actually does, no request/response schema, and all doc pages return only a wallet-connect prompt. The 'Premium API Access' title and '/ach/195' path are the only hints at 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'/api/v1/ach/195':40,103 '/docs':178 '/pricing':180 '/readme':181 '/request':12,30 '0.02':11,29,86,162,164 '000':157 '0x1a2b13e97f5f837c8f9fa1f95a1484b7c70d85f3':170 '20':156 'ACH API' 'Base network API' 'USDC pay-per-call' 'accept':149 'access':111 'ach':5,23,121 'ach-endpoint' 'actual':195 'address':169 'advertis':83 'ai/ml':60 'analyt':59 'api':16,34,56,91,110 'autom':122 'automated clearing house' 'avail':140 'awar':213 'base':8,26,79,158,172 'base-network' 'call':4,22,166 'caller':210 'challeng':143 'clear':123 'collect':50 'commit':99 'confirm':144 'connect':186 'contact':223 'content':192 'crypto':63 'data':58,128 'direct':222 'document':133,176,216 'endpoint':6,24,38,68,102,146,206 'exact':114 'exampl':138 'expect':198 'experiment':220 'financ':62 'flat':85 'format':197 'function':115 'hous':124 'infer':61 'input':199 'integr':218 'key':17,35,92 'limit':95 'list':105 'live':148 'lowpaymentfee' 'lowpaymentfee.com':45 'minimum':98 'network':80 'no-api-key' 'offer':48 'page':177 'paid':167 'paramet':200 'part':42 'path':119 'pay':2,20,53 'pay-per-cal':1,19 'pay-per-request':52 'payment':72,126 'payment processing API' 'payment-rel':125 'per':3,21,54,87,165 'platform':46,82 'post':150 'premium':109 'process':130 'prompt':188 'prospect':209 'protocol':73 'provid':174,226 'rate':94 'relat':127 'remain':207 'request':55,88,151,196 'request/response':134 'requir':18,36,153,219 'respons':202 'return':183 'schema':135,217 'servic':66 'settl':74 'span':57 'specif':101 'structur':203 'substant':191 'suggest':120 'titl':108 'unclear':117 'unit':159 'unknown':208 'usag':137 'usdc':14,32,76,161,163 'usdc-settlement' 'use':69 'util':65 'via':9,27 'wallet':187 'without':215 'x402':10,28,71,142 'x402 ACH' 'x402-payment'","prices":[{"id":"7a24f153-663e-4926-973c-fc2cc4bc6c6b","listingId":"4f496f47-e1fd-44ef-a311-ff773f83230c","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/195","description":"Premium API Access","outputSchema":{"input":{"type":"http","method":"GET","discoverable":true}},"maxAmountRequired":"20000","maxTimeoutSeconds":300}],"asset_contract":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","max_timeout_seconds":300},"createdAt":"2026-04-18T18:42:07.600Z"}],"sources":[{"listingId":"4f496f47-e1fd-44ef-a311-ff773f83230c","source":"x402_bazaar","sourceId":"https://lowpaymentfee.com/api/v1/ach/195","sourceUrl":"https://api.cdp.coinbase.com/platform/v2/x402/discovery/resources","isPrimary":true,"firstSeenAt":"2026-04-18T18:42:07.600Z","lastSeenAt":"2026-04-24T22:32:11.398Z"}],"details":{"listingId":"4f496f47-e1fd-44ef-a311-ff773f83230c","quickStartSnippet":"curl -X POST https://lowpaymentfee.com/api/v1/ach/195 \\\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 endpoint returns a 402 x402 challenge requesting up to 20,000 base units of USDC on Base","source_url":"https://lowpaymentfee.com/api/v1/ach/195"},{"claim":"The platform advertises $0.02/request pricing with no API keys, no rate limits, and instant access on Base network","source_url":"https://lowpaymentfee.com"},{"claim":"USDC asset contract on Base is 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","source_url":"https://lowpaymentfee.com/api/v1/ach/195"},{"claim":"Documentation pages return only 'Connect wallet' with no substantive content","source_url":"https://lowpaymentfee.com/docs"}],"useCases":["Accessing ACH-related data or payment processing via a single pay-per-call request","Integrating low-cost financial API calls into agent workflows without managing API keys","Programmatic access to ACH endpoints settled in USDC on Base"],"bestFor":["Developers wanting keyless, pay-per-use financial API access","AI agents that can settle x402 payments in USDC on Base","Prototyping integrations where low per-call cost matters"],"notFor":["Production use cases requiring documented request/response schemas","High-volume batch ACH processing with guaranteed SLAs","Users who need fiat-only payment rails with no crypto involvement"],"kindDetails":{"x402_version":1,"resource_type":"http","bazaar_last_updated":"2026-02-17T23:14:31.187Z"},"updatedAt":"2026-04-24T22:32:11.398Z"}}