{"id":"964c602e-12b1-4fbd-92e0-8aca12c71e7a","shortId":"w6DFW5","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/60` 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/60` path is not documented — the provider labels it generically as \"Premium API Access\" — so the exact data or service it returns is unclear. It may relate to ACH (Automated Clearing House) banking data or routing information given the URL path, but this is speculative.\n\nPricing is $0.02 per request (maxAmountRequired of 20,000 base units of USDC with 6 decimals = $0.02). Payment is handled inline via the x402 protocol: callers attach an `X-PAYMENT` header with a signed payment to the payTo address. No API keys, accounts, or rate limits are advertised. The endpoint accepts POST requests and returns `application/json`.\n\nThe broader platform lists roughly 16 endpoints across categories like sentiment analysis, text summarization, embeddings, price feeds, gas estimates, geocoding, and more — all at the same $0.02/request price point. Documentation beyond the landing page is essentially empty (docs, pricing, and README pages all just show a \"Connect wallet\" prompt), so there is no schema documentation for request or response payloads for any endpoint.","tags":[],"capabilities":["x402-payment","usdc-base-network","pay-per-request","no-api-key","json-response","ach-data"],"categories":["finance","infrastructure"],"synonyms":["ACH API","payment processing API","low fee API","x402 API","Base USDC API","micropayment API","pay-per-call API"],"warnings":["The specific function of /api/v1/ach/60 is undocumented — 'Premium API Access' is a generic label applied to all endpoints","No request or response schema is available for any endpoint on this platform","Documentation pages (/docs, /pricing, /README) are empty, showing only 'Connect wallet'","The 'ach' in the URL path suggests ACH banking data but this is unverified speculation","The broader platform lists many endpoints but none have documented input/output schemas"],"endpointUrl":"https://lowpaymentfee.com/api/v1/ach/60","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/60","description":"Premium API Access","outputSchema":{"input":{"type":"http","method":"GET","discoverable":true}},"maxAmountRequired":"20000","maxTimeoutSeconds":300}]},"qualityScore":"0.250","qualityRationale":"The endpoint is live (returns a valid 402 x402 challenge), but there is zero documentation on what this specific endpoint does, what request body it expects, or what it returns. The provider's docs, pricing, and README pages are all blank beyond a wallet-connect prompt. The endpoint path suggests ACH-related functionality but this is unconfirmed. Effectively a stub 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'/request':12,30,215 '0.02':11,29,133,147,214 '000':139 '16':193 '20':138 '6':145 'ACH API' 'Base USDC API' 'accept':182 'access':99 'account':174 'ach':5,23,114 'ach-data' 'across':195 'address':170 'advertis':179 'ai/ml':60 'analysi':199 'analyt':59 'api':16,34,56,98,172 'application/json':187 'attach':157 'autom':115 'bank':118 'base':8,26,79,140 'beyond':219 'broader':189 'call':4,22 'caller':156 'categori':196 'clear':116 'collect':50 'connect':235 'crypto':63 'data':58,103,119 'decim':146 'doc':226 'document':90,218,243 'embed':202 'empti':225 'endpoint':6,24,38,68,181,194,251 'essenti':224 'estim':206 'exact':102 'feed':204 'financ':62 'function':83 'gas':205 'generic':95 'geocod':207 'given':123 'handl':150 'header':162 'hous':117 'infer':61 'inform':122 'inlin':151 'json-response' 'key':17,35,173 'label':93 'land':221 'like':197 'limit':177 'list':191 'low fee API' 'lowpaymentfee.com':45 'maxamountrequir':136 'may':111 'micropayment API' 'network':80 'no-api-key' 'offer':48 'page':222,230 'part':42 'path':87,126 'pay':2,20,53 'pay-per-cal':1,19 'pay-per-call API' 'pay-per-request':52 'payload':248 'payment':72,148,161,166 'payment processing API' 'payto':169 'per':3,21,54,134 'platform':46,190 'point':217 'post':183 'premium':97 'price':131,203,216,227 'prompt':237 'protocol':73,155 'provid':92 'rate':176 'readm':229 'relat':112 'request':55,135,184,245 'requir':18,36 'respons':247 'return':107,186 'rough':192 'rout':121 'schema':242 'sentiment':198 'servic':66,105 'settl':74 'show':233 'sign':165 'span':57 'specif':82 'specul':130 'summar':201 'text':200 'unclear':109 'unit':141 'url':125 'usdc':14,32,76,143 'usdc-base-network' 'use':69 'util':65 'via':9,27,152 'wallet':236 'x':160 'x-payment':159 'x402':10,28,71,154 'x402 API' 'x402-payment'","prices":[{"id":"bfe1bdd1-86c4-43df-8ca0-5c3fa861ffc9","listingId":"964c602e-12b1-4fbd-92e0-8aca12c71e7a","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/60","description":"Premium API Access","outputSchema":{"input":{"type":"http","method":"GET","discoverable":true}},"maxAmountRequired":"20000","maxTimeoutSeconds":300}],"asset_contract":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","max_timeout_seconds":300},"createdAt":"2026-04-18T18:42:16.221Z"}],"sources":[{"listingId":"964c602e-12b1-4fbd-92e0-8aca12c71e7a","source":"x402_bazaar","sourceId":"https://lowpaymentfee.com/api/v1/ach/60","sourceUrl":"https://api.cdp.coinbase.com/platform/v2/x402/discovery/resources","isPrimary":true,"firstSeenAt":"2026-04-18T18:42:16.221Z","lastSeenAt":"2026-04-27T10:33:13.998Z"}],"details":{"listingId":"964c602e-12b1-4fbd-92e0-8aca12c71e7a","quickStartSnippet":"curl -X POST https://lowpaymentfee.com/api/v1/ach/60 \\\n  -H \"Content-Type: application/json\" \\\n  -H \"X-PAYMENT: <signed-x402-payment-header>\"","exampleRequest":null,"exampleResponse":null,"schema":{"input":{"type":"http","method":"GET","discoverable":true}},"openapiUrl":null,"agentsTxtUrl":null,"citations":[{"claim":"Pricing is $0.02 per request with no API keys, no rate limits, and instant access on Base network","source_url":"https://lowpaymentfee.com"},{"claim":"maxAmountRequired is 20000 base units of USDC (asset 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913) on Base","source_url":"https://lowpaymentfee.com/api/v1/ach/60"},{"claim":"The platform offers ~16 endpoints across data/analytics, AI/ML, finance/web3, and infrastructure categories","source_url":"https://lowpaymentfee.com"},{"claim":"Documentation pages show only 'Connect wallet' with no substantive content","source_url":"https://lowpaymentfee.com/docs"}],"useCases":["Accessing ACH-related data or routing information on a per-call basis","Integrating pay-per-request financial APIs without managing API keys or subscriptions","Agent-driven workflows that need on-demand financial data with crypto micropayments"],"bestFor":["Developers wanting zero-signup, pay-as-you-go API access","AI agents that can settle x402 payments autonomously on Base","Projects needing low-cost per-call financial data without rate limits"],"notFor":["Users who need detailed API documentation or guaranteed SLAs before integrating","High-volume consumers who would benefit from bulk pricing or subscription plans","Anyone without a Base-compatible USDC wallet"],"kindDetails":{"x402_version":1,"resource_type":"http","bazaar_last_updated":"2026-02-17T23:14:30.83Z"},"updatedAt":"2026-04-27T10:33:13.998Z"}}