{"id":"95f74c40-aab7-42f0-ab06-2bdfec9dbf3c","shortId":"XDasrW","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/34` is part of the lowpaymentfee.com platform, which offers a broad suite of pay-per-request APIs spanning data analytics, AI/ML inference, finance/Web3 data, and infrastructure utilities. All endpoints use the x402 payment protocol, settling in USDC on the Base network at $0.02 per request. 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/34` is listed under the title \"Premium API Access\" but its exact functionality is not documented beyond that label. The provider's landing page groups endpoints into categories (Data & Analytics, AI & Machine Learning, Finance & Web3, Infrastructure), but this particular path (`/ach/34`) does not appear in any of those listed categories. It accepts HTTP POST requests and returns `application/json`. The x402 challenge confirms the endpoint is live, requiring a maximum of 20,000 base units of USDC (6 decimals), which equals $0.02.\n\nDocumentation on the site is extremely sparse — the docs, API, pricing, and README pages all render only a \"Connect wallet\" prompt with no further content. There is no OpenAPI spec, no request/response schema, and no description of what the `/ach/34` endpoint actually does or what parameters it accepts. Prospective users should be aware that the actual behavior of this endpoint is unclear without further experimentation.","tags":[],"capabilities":["x402-payment","usdc-settlement","base-network","pay-per-request","no-api-key","http-post","json-response"],"categories":["finance","infrastructure"],"synonyms":["ACH API","payment API","lowpaymentfee","x402 endpoint","USDC micropayment API","Base network API","pay-per-call API"],"warnings":["The endpoint path /api/v1/ach/34 does not appear in the provider's own listed API catalog — its actual functionality is unknown.","All documentation pages (docs, API, pricing, README) render only 'Connect wallet' with no usable content.","No OpenAPI spec, request schema, or response schema is available.","The label 'Premium API Access' is generic and does not describe what the endpoint does."],"endpointUrl":"https://lowpaymentfee.com/api/v1/ach/34","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/34","description":"Premium API Access","outputSchema":{"input":{"type":"http","method":"GET","discoverable":true}},"maxAmountRequired":"20000","maxTimeoutSeconds":300}]},"qualityScore":"0.250","qualityRationale":"The endpoint is confirmed live via a valid x402 402 challenge, and pricing is clear ($0.02 USDC on Base). However, there is no documentation, no OpenAPI schema, no request/response examples, and the purpose of `/api/v1/ach/34` is entirely undocumented — it doesn't even appear in the provider's own listed API catalog. This is effectively a stub 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'/api/v1/ach/34':40,109 '/request':12,30 '0.02':11,29,83,189 '000':180 '20':179 '6':185 'ACH API' 'Base network API' 'USDC micropayment API' 'accept':160,237 'access':117 'ach':5,23 'actual':231,245 'ai':139 'ai/ml':61 'analyt':60,138 'api':16,34,57,87,116,199 'appear':152 'application/json':166 'attach':98 'awar':242 'base':8,26,80,181 'base-network' 'behavior':246 'beyond':125 'broad':50 'call':4,22 'caller':96 'categori':136,158 'challeng':169 'commit':93 'confirm':170 'connect':208 'content':214 'data':59,64,137 'decim':186 'descript':225 'doc':198 'document':124,190 'endpoint':6,24,38,69,108,134,172,230,249 'equal':188 'exact':120 'experiment':254 'extrem':195 'financ':142 'finance/web3':63 'function':121 'group':133 'header':102 'http':161 'http-post' 'infer':62 'infrastructur':66,144 'json-response' 'key':17,35,88 'label':127 'land':131 'learn':141 'limit':90 'list':111,157 'live':174 'lowpaymentfee' 'lowpaymentfee.com':45 'machin':140 'maximum':177 'network':81 'no-api-key' 'offer':48 'openapi':218 'page':132,203 'paramet':235 'part':42 'particular':147 'path':148 'pay':2,20,54 'pay-per-cal':1,19 'pay-per-call API' 'pay-per-request':53 'payment':73,101 'payment API' 'per':3,21,55,84 'platform':46 'post':162 'premium':115 'price':200 'prompt':210 'prospect':238 'protocol':74 'provid':129 'rate':89 'readm':202 'render':205 'request':56,85,105,163 'request/response':221 'requir':18,36,95,175 'return':165 'schema':222 'settl':75 'simpli':97 'site':193 'span':58 'spars':196 'spec':219 'specif':107 'suit':51 'titl':114 'unclear':251 'unit':182 'upfront':92 'usdc':14,32,77,184 'usdc-settlement' 'use':70 'user':239 'util':67 'via':9,27 'wallet':209 'web3':143 'without':252 'x402':10,28,72,100,168 'x402 endpoint' 'x402-payment'","prices":[{"id":"5bf4be9b-732b-4eaf-a49b-d200255ec8c2","listingId":"95f74c40-aab7-42f0-ab06-2bdfec9dbf3c","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/34","description":"Premium API Access","outputSchema":{"input":{"type":"http","method":"GET","discoverable":true}},"maxAmountRequired":"20000","maxTimeoutSeconds":300}],"asset_contract":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","max_timeout_seconds":300},"createdAt":"2026-04-18T18:40:32.881Z"}],"sources":[{"listingId":"95f74c40-aab7-42f0-ab06-2bdfec9dbf3c","source":"x402_bazaar","sourceId":"https://lowpaymentfee.com/api/v1/ach/34","sourceUrl":"https://api.cdp.coinbase.com/platform/v2/x402/discovery/resources","isPrimary":true,"firstSeenAt":"2026-04-18T18:40:32.881Z","lastSeenAt":"2026-04-27T22:32:47.104Z"}],"details":{"listingId":"95f74c40-aab7-42f0-ab06-2bdfec9dbf3c","quickStartSnippet":"curl -X POST https://lowpaymentfee.com/api/v1/ach/34 \\\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 requiring 20,000 base units of USDC on Base ($0.02)","source_url":"https://lowpaymentfee.com/api/v1/ach/34"},{"claim":"The platform charges $0.02 per request with no API keys, no rate limits, and instant access on the Base network","source_url":"https://lowpaymentfee.com"},{"claim":"USDC asset contract on Base is 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","source_url":"https://lowpaymentfee.com/api/v1/ach/34"},{"claim":"Docs, API, pricing, and README pages show only 'Connect wallet' with no further content","source_url":"https://lowpaymentfee.com/docs"}],"useCases":["Programmatic access to an ACH-related service with per-call USDC micropayments","Agent-driven API consumption without pre-registration or API key management","Integrating pay-as-you-go endpoints into automated workflows on Base"],"bestFor":["Developers wanting zero-setup, keyless API access via crypto micropayments","AI agents that can settle x402 payments autonomously on Base","Users who prefer pay-per-request pricing with no subscriptions"],"notFor":["Users who need detailed API documentation or guaranteed SLAs before integrating","Anyone requiring fiat-only payment rails with no crypto involvement","High-volume consumers who need bulk pricing or rate-limit guarantees"],"kindDetails":{"x402_version":1,"resource_type":"http","bazaar_last_updated":"2026-02-17T23:14:35.822Z"},"updatedAt":"2026-04-27T22:32:47.104Z"}}