Pay-per-call ACH endpoint on Base via x402 — $0.02/request in USDC, no API keys required.
What it does
This endpoint at `/api/v1/ach/162` 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/162` path is not documented — the provider labels it generically as "Premium API Access" — so its exact capabilities are unclear. It may relate to ACH (Automated Clearing House) payment processing or data, but this is speculative based solely on the URL path.
Pricing is $0.02 per request (20,000 base units of USDC with 6 decimals = $0.02), consistent with the platform's uniform pricing across all listed endpoints. The x402 challenge confirms the endpoint is live, accepts POST requests, and settles payments to address `0x1A2B13E97f5F837C8F9FA1F95a1484B7C70d85F3` on Base. No API keys, rate limits, or upfront commitments are required — callers simply attach an x402 payment header to each request.
Documentation is extremely sparse. The docs, API, pricing, and README pages all render only a "Connect wallet" prompt with no substantive content. There is no OpenAPI schema, no request/response examples, and no description of what this specific endpoint accepts or returns. The platform lists many other endpoints on its landing page, but `/api/v1/ach/162` is not among them, making it difficult to determine its intended use case.
Capabilities
Use cases
- —Accessing ACH-related data or functionality on a per-request basis
- —Integrating pay-per-call financial endpoints into agent workflows
- —Testing x402 payment protocol integrations with low-cost endpoints
Fit
Best for
- —Developers experimenting with x402 payment protocol
- —Agents needing low-cost per-call API access without API key management
- —Use cases requiring USDC-settled micropayments on Base
Not for
- —Users who need documented request/response schemas before integrating
- —High-volume production workloads where endpoint behavior is unverified
- —Anyone needing ACH transaction initiation (no evidence this endpoint supports that)
Quick start
curl -X POST https://lowpaymentfee.com/api/v1/ach/162 \
-H "Content-Type: application/json" \
-H "X-PAYMENT: <x402-payment-token>" \
-d '{}'Endpoint
Quality
The endpoint is live (402 challenge confirmed) and pricing is clear ($0.02/request in USDC on Base), but there is no documentation, no OpenAPI schema, no request/response examples, and the specific function of /api/v1/ach/162 is unknown. The endpoint is not listed on the provider's own landing page. This is effectively a stub listing.
Warnings
- —The exact purpose and functionality of /api/v1/ach/162 is undocumented and unknown
- —No OpenAPI schema, request format, or response format is available
- —The endpoint does not appear in the provider's own listed API catalog
- —Docs, pricing, API, and README pages all render only 'Connect wallet' with no content
- —Cannot verify what data or service this endpoint actually provides
Citations
- —Endpoint returns 402 with x402 challenge, confirming it is livehttps://lowpaymentfee.com/api/v1/ach/162
- —Price is $0.02 per request across all endpoints, paid in USDC on Basehttps://lowpaymentfee.com
- —No API keys, no rate limits, instant access advertisedhttps://lowpaymentfee.com
- —USDC asset address 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913 on Base networkhttps://lowpaymentfee.com/api/v1/ach/162
- —maxAmountRequired is 20000 base units (6 decimals) = $0.02https://lowpaymentfee.com/api/v1/ach/162