{"id":"89fba25d-8ab6-4a91-9996-f1fd131e9917","shortId":"KgNM5h","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/87` 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 listed price is $0.02 per request with no API keys, rate limits, or commitments required.\n\nThe specific function of the `/api/v1/ach/87` endpoint is not documented on the site — the crawled landing page lists endpoints under categories like Data & Analytics, AI & Machine Learning, Finance & Web3, and Infrastructure, but this particular ACH path does not appear among them. The path suggests it may relate to ACH (Automated Clearing House) banking or payment data, but this is speculative. The x402 challenge confirms the endpoint is live, accepts POST requests, and requires up to 20,000 base units of USDC (0.02 USDC, i.e., $0.02) per call on the Base network.\n\nThe platform advertises simple pricing at $0.02 per request across all endpoints, with no minimums and instant access. Documentation pages (`/docs`, `/pricing`, `/api`, `/README`) all returned minimal content (just \"Connect wallet\"), so there is no detailed API documentation, request/response schema, or usage examples available.","tags":[],"capabilities":["x402-payment","usdc-base","pay-per-request","no-api-key","post-endpoint"],"categories":["finance","infrastructure"],"synonyms":["ACH API","payment API","low fee API","x402 API","USDC micropayment","Base network API","pay-per-call"],"warnings":["The /api/v1/ach/87 path is not listed among the provider's advertised endpoints — its specific function is unknown.","All documentation pages (/docs, /pricing, /api, /README) returned no meaningful content.","No request or response schema is available; input/output formats are entirely unknown.","The ACH path name suggests possible financial/banking data, which may fall under regulated categories."],"endpointUrl":"https://lowpaymentfee.com/api/v1/ach/87","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/87","description":"Premium API Access","outputSchema":{"input":{"type":"http","method":"GET","discoverable":true}},"maxAmountRequired":"20000","maxTimeoutSeconds":300}]},"qualityScore":"0.300","qualityRationale":"The endpoint is live and returns a valid x402 challenge, but the specific purpose of /api/v1/ach/87 is undocumented. All documentation pages return only 'Connect wallet' with no schemas, examples, or descriptions. The endpoint does not appear in the site's own API listing, making its function 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'/api/v1/ach/87':40,102 '/docs':208 '/pricing':209 '/readme':211 '/request':12,30 '0.02':11,29,85,178,181,194 '000':173 '20':172 'ACH API' 'Base network API' 'USDC micropayment' 'accept':165 'access':205 'ach':5,23,131,145 'across':197 'advertis':190 'ai':121 'ai/ml':60 'among':136 'analyt':59,120 'api':16,34,56,90,224 'appear':135 'autom':146 'avail':231 'bank':149 'base':8,26,79,174,186 'call':4,22,183 'categori':117 'challeng':159 'clear':147 'collect':50 'commit':95 'confirm':160 'connect':217 'content':215 'crawl':111 'crypto':63 'data':58,119,152 'detail':223 'document':106,206,225 'endpoint':6,24,38,68,103,115,162,199 'exampl':230 'financ':62,124 'function':99 'hous':148 'i.e':180 'infer':61 'infrastructur':127 'instant':204 'key':17,35,91 'land':112 'learn':123 'like':118 'limit':93 'list':82,114 'live':164 'low fee API' 'lowpaymentfee.com':45 'machin':122 'may':142 'minim':214 'minimum':202 'network':80,187 'no-api-key' 'offer':48 'page':113,207 'part':42 'particular':130 'path':132,139 'pay':2,20,53 'pay-per-cal':1,19 'pay-per-call' 'pay-per-request':52 'payment':72,151 'payment API' 'per':3,21,54,86,182,195 'platform':46,189 'post':166 'post-endpoint' 'price':83,192 'protocol':73 'rate':92 'relat':143 'request':55,87,167,196 'request/response':226 'requir':18,36,96,169 'return':213 'schema':227 'servic':66 'settl':74 'simpl':191 'site':109 'span':57 'specif':98 'specul':156 'suggest':140 'unit':175 'usag':229 'usdc':14,32,76,177,179 'usdc-base' 'use':69 'util':65 'via':9,27 'wallet':218 'web3':125 'x402':10,28,71,158 'x402 API' 'x402-payment'","prices":[{"id":"26e92e97-9082-4ee7-9ea9-78e44f20f536","listingId":"89fba25d-8ab6-4a91-9996-f1fd131e9917","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/87","description":"Premium API Access","outputSchema":{"input":{"type":"http","method":"GET","discoverable":true}},"maxAmountRequired":"20000","maxTimeoutSeconds":300}],"asset_contract":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","max_timeout_seconds":300},"createdAt":"2026-04-18T18:42:23.503Z"}],"sources":[{"listingId":"89fba25d-8ab6-4a91-9996-f1fd131e9917","source":"x402_bazaar","sourceId":"https://lowpaymentfee.com/api/v1/ach/87","sourceUrl":"https://api.cdp.coinbase.com/platform/v2/x402/discovery/resources","isPrimary":true,"firstSeenAt":"2026-04-18T18:42:23.503Z","lastSeenAt":"2026-04-27T11:03:51.830Z"}],"details":{"listingId":"89fba25d-8ab6-4a91-9996-f1fd131e9917","quickStartSnippet":"curl -X POST https://lowpaymentfee.com/api/v1/ach/87 \\\n  -H \"Content-Type: application/json\" \\\n  -H \"X-PAYMENT: <x402-payment-header>\" \\\n  -d '{}'","exampleRequest":null,"exampleResponse":null,"schema":{"input":{"type":"http","method":"GET","discoverable":true}},"openapiUrl":null,"agentsTxtUrl":null,"citations":[{"claim":"The platform advertises $0.02 per request with no API keys, no rate limits, and instant access on the Base network.","source_url":"https://lowpaymentfee.com"},{"claim":"The x402 challenge shows maxAmountRequired of 20000 base units of USDC (asset 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913) on Base, equaling $0.02.","source_url":"https://lowpaymentfee.com/api/v1/ach/87"},{"claim":"Documentation pages /docs, /pricing, /api, and /README all returned minimal content ('Connect wallet').","source_url":"https://lowpaymentfee.com/docs"}],"useCases":["Accessing ACH-related data or functionality on a per-request basis","Integrating pay-per-call APIs without managing API keys or subscriptions","Agent-driven workflows that need on-demand financial endpoints settled in USDC"],"bestFor":["Developers wanting zero-commitment, pay-as-you-go API access","AI agents that can settle x402 payments autonomously on Base","Users who prefer crypto micropayments over traditional API billing"],"notFor":["Users needing detailed API documentation or guaranteed SLAs","High-volume use cases where per-request pricing may add up","Anyone requiring non-crypto payment methods"],"kindDetails":{"x402_version":1,"resource_type":"http","bazaar_last_updated":"2026-02-17T23:14:30.377Z"},"updatedAt":"2026-04-27T11:03:51.830Z"}}