Pay-per-call ACH endpoint on Base via x402 — $0.02/request in USDC
What it does
This endpoint at `/api/v1/ach/95` is part of the lowpaymentfee.com platform, which offers a collection of pay-per-request APIs spanning data & analytics, AI/ML, finance & Web3, and infrastructure utilities. 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 instant access.
The specific `/api/v1/ach/95` path falls under a "Premium API Access" label, but the site does not provide detailed documentation about what this particular endpoint returns. 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, paid to address `0x1A2B13E97f5F837C8F9FA1F95a1484B7C70d85F3` on Base. The response MIME type is `application/json`.
Documentation across the site is extremely thin — the docs, pricing, API, and README pages all render only a "Connect wallet" prompt with no substantive content. There is no OpenAPI spec, no request/response schema, and no description of what the ACH endpoint actually does or what parameters it accepts. The endpoint name suggests it may relate to ACH (Automated Clearing House) payment data or processing, but this is speculative.
Capabilities
Use cases
- —Accessing ACH-related data or functionality on a per-request basis without API keys
- —Integrating pay-per-call endpoints into agent workflows using x402 protocol
- —Testing x402 micropayment flows on Base network
Fit
Best for
- —Developers experimenting with x402 pay-per-request protocols
- —Agents needing keyless, on-demand API access settled in USDC on Base
- —Low-volume or sporadic API usage where subscription pricing is wasteful
Not for
- —Users who need detailed API documentation or guaranteed SLAs before integrating
- —High-volume production workloads where $0.02/request adds up without bulk discounts
- —Anyone needing clarity on exactly what data or service the ACH endpoint provides
Quick start
curl -X POST https://lowpaymentfee.com/api/v1/ach/95 \
-H "Content-Type: application/json" \
-H "X-PAYMENT: <x402-payment-header>" \
-d '{}'Endpoint
Quality
The endpoint is confirmed live via a valid x402 402 challenge, but there is essentially no documentation: no OpenAPI spec, no request/response schema, no description of what '/api/v1/ach/95' actually does. The docs pages are empty. The listing is effectively a stub.
Warnings
- —No documentation available — docs, pricing, API, and README pages all show only 'Connect wallet' with no content
- —The purpose and functionality of /api/v1/ach/95 is unknown; 'Premium API Access' is the only label
- —No request or response schema is provided; callers cannot know what parameters to send or what to expect back
- —The endpoint path suggests ACH (banking) functionality, which may involve regulated financial data — exercise caution
Citations
- —The platform charges $0.02 per request with no API keys, no rate limits, and instant access on Base networkhttps://lowpaymentfee.com
- —The x402 challenge shows maxAmountRequired of 20000 base units of USDC (0.02 USD) on Base, paid to 0x1A2B13E97f5F837C8F9FA1F95a1484B7C70d85F3https://lowpaymentfee.com/api/v1/ach/95
- —The site lists APIs across Data & Analytics, AI & ML, Finance & Web3, and Infrastructure categorieshttps://lowpaymentfee.com