Pay-per-call ACH endpoint on Base via x402 — $0.02/request in USDC
What it does
This endpoint at `/api/v1/ach/124` is part of the lowpaymentfee.com platform, which offers a broad catalog of pay-per-request APIs spanning data & analytics, AI/ML inference, finance & Web3, and infrastructure utilities. All endpoints are gated via the x402 payment protocol, settling in USDC on the Base network. The specific resource at `/api/v1/ach/124` is labeled "Premium API Access" but its exact functionality is not documented beyond that title — the path segment `ach/124` suggests it may relate to ACH (Automated Clearing House) payment processing or lookup, though this is not confirmed by the available documentation.
The x402 challenge is live and returns a `maxAmountRequired` of 20,000 base units of USDC (6 decimals), which equals $0.02 per request. Payment is made via the "exact" scheme to a specified wallet address on Base. The platform advertises no API keys, no rate limits, and instant access. No OpenAPI schema, detailed request/response documentation, or usage examples were found in the crawl — the docs, pricing, and API pages all returned only a "Connect wallet" prompt with no further content.
Because the endpoint's actual functionality (what it returns, what input it expects) is undocumented, agents should treat this as a low-information listing. The platform hosts many endpoints at similar price points, but without request/response schemas or sample payloads, integration requires experimentation or direct contact with the provider.
Capabilities
Use cases
- —Programmatic ACH-related data retrieval or payment initiation (inferred from path)
- —Agent-driven pay-per-call API access without API key management
- —Micropayment-gated financial service integration
Fit
Best for
- —Agents needing keyless, pay-per-call API access on Base
- —Developers exploring x402-gated financial endpoints
- —Automated workflows that settle per-request in USDC
Not for
- —Users who need detailed API documentation before integrating
- —High-volume use cases where per-request pricing may add up
- —Anyone requiring guaranteed SLA or support
Quick start
curl -X POST https://lowpaymentfee.com/api/v1/ach/124 \
-H "Content-Type: application/json" \
-H "X-PAYMENT: <x402-payment-token>" \
-d '{}'Endpoint
Quality
The x402 challenge is live and pricing is clear ($0.02 USDC on Base), but there is no documentation of what this endpoint actually does, no request/response schema, and no examples. The docs pages are empty beyond a wallet-connect prompt. The endpoint title 'Premium API Access' is generic and uninformative.
Warnings
- —Endpoint functionality is undocumented — 'Premium API Access' and the /ach/124 path provide no clear indication of what data or service is returned.
- —No OpenAPI spec, request schema, or response schema available.
- —All documentation pages (docs, pricing, API, README) returned only 'Connect wallet' with no usable content.
- —The path suggests ACH (Automated Clearing House) functionality but this is unconfirmed inference.
Citations
- —The x402 challenge returns maxAmountRequired of 20000 base units of USDC on Base networkhttps://lowpaymentfee.com/api/v1/ach/124
- —Platform advertises $0.02/request, no API keys, no rate limits, instant accesshttps://lowpaymentfee.com
- —USDC asset contract on Base: 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913https://lowpaymentfee.com/api/v1/ach/124
- —Docs, pricing, API, and README pages all show only 'Connect wallet'https://lowpaymentfee.com/docs