Pay-per-request ACH endpoint on Base via x402 — $0.02/call in USDC, no API keys required.
What it does
This endpoint at `/api/v1/ach/147` 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 platform advertises a flat $0.02 per request with no API keys, no rate limits, and no minimum commitments.
The specific `/api/v1/ach/147` path is listed under "Premium API Access" but its exact functionality is unclear from the available documentation. The path prefix "ach" suggests it may relate to ACH (Automated Clearing House) banking or payment data, but this is not confirmed by the crawled material. The x402 challenge confirms the endpoint is live, accepts POST requests, and requires up to 20,000 base units of USDC (0.02 USDC = $0.02) per call on the Base network.
Documentation on the site 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 detailed description of what this specific endpoint returns. Prospective users should be aware that the actual behavior of this endpoint is unverified beyond the payment challenge.
Capabilities
Use cases
- —Querying ACH-related payment or banking data on a per-request basis
- —Integrating low-cost financial data lookups into agent workflows
- —Testing x402 payment protocol integrations with a live endpoint
Fit
Best for
- —Developers experimenting with x402 pay-per-request protocols
- —Agents needing low-cost, keyless API access on Base
- —Quick one-off financial data queries without subscription commitments
Not for
- —Production workloads requiring well-documented, schema-validated APIs
- —Use cases needing guaranteed SLAs or support contracts
- —Users who need detailed documentation before integrating
Quick start
curl -X POST https://lowpaymentfee.com/api/v1/ach/147 \
-H "Content-Type: application/json" \
-H "X-PAYMENT: <x402-payment-header>" \
-d '{}'Endpoint
Quality
The endpoint is live (402 challenge confirmed) and pricing is clear ($0.02 USDC on Base), but there is no documentation, no schema, no request/response examples, and the specific purpose of /api/v1/ach/147 is unknown. The docs pages are empty beyond a wallet connect prompt. This is effectively a stub listing.
Warnings
- —Endpoint purpose is unclear — 'ach/147' is not described anywhere in the crawled material
- —All documentation pages (docs, API, pricing, README) render only 'Connect wallet' with no content
- —No OpenAPI schema or request/response examples available
- —The specific endpoint /api/v1/ach/147 is not listed on the site's homepage among the advertised APIs
- —Actual response format and data returned are completely unknown
Citations
- —The platform charges $0.02 per request with no API keys, no rate limits, and instant access on the Base networkhttps://lowpaymentfee.com
- —The x402 challenge confirms the endpoint is live, accepts POST, and requires up to 20000 base units of USDC (asset 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913) on Basehttps://lowpaymentfee.com/api/v1/ach/147
- —Documentation pages render only a 'Connect wallet' prompt with no substantive contenthttps://lowpaymentfee.com/docs