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/110` is part of the lowpaymentfee.com platform, which offers a broad catalog of pay-per-request APIs settled via the x402 protocol on the Base network using USDC. The specific endpoint is listed under "Premium API Access" but its exact functionality is unclear — the path suggests ACH (Automated Clearing House) payment processing or related financial data, but no documentation, request/response schema, or usage examples are available beyond the generic listing.
The platform advertises a flat $0.02 per request across all endpoints, with no API keys, no rate limits, and instant access. The x402 challenge confirms the endpoint is live, accepting POST requests and requiring payment of up to 20,000 base units of USDC (0.02 USDC = $0.02) on the Base network. Payment is made via the x402 `exact` scheme to the specified wallet address.
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 spec, no request/response schema beyond the x402 output schema stub, and no examples of what this endpoint actually returns. The platform hosts many other endpoints across data/analytics, AI/ML, finance/Web3, and infrastructure categories, all at the same price point.
Capabilities
Use cases
- —Querying ACH-related financial data or initiating ACH-related operations via a single paid API call
- —Integrating low-cost per-request financial endpoints into agent workflows without managing API keys
- —Testing x402 payment protocol integrations on Base with a low-cost endpoint
Fit
Best for
- —Developers experimenting with x402 pay-per-call protocols
- —Agents needing keyless, on-demand financial API access
- —Low-volume or sporadic ACH-related queries where subscription pricing is wasteful
Not for
- —Production ACH payment initiation requiring regulatory compliance and audit trails
- —High-volume batch processing where per-request pricing becomes expensive
- —Users who need detailed API documentation and guaranteed SLAs before integration
Quick start
curl -X POST https://lowpaymentfee.com/api/v1/ach/110 \
-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 per request), but there is effectively zero documentation: no request/response schema, no description of what the ACH endpoint actually does, no examples, and all doc pages render only 'Connect wallet'. This is essentially a stub listing.
Warnings
- —No documentation available — all doc/pricing/README pages show only 'Connect wallet'
- —Exact functionality of /api/v1/ach/110 is unknown; 'Premium API Access' is a generic label
- —No request or response schema provided — callers cannot know what to send or expect back
- —No OpenAPI spec or AI plugin manifest discovered
- —The platform lists many endpoints but none have visible documentation
Citations
- —The endpoint returns a 402 x402 challenge with maxAmountRequired of 20000 base units of USDC on Basehttps://lowpaymentfee.com/api/v1/ach/110
- —Platform advertises $0.02/request, no API keys, no rate limits, instant access, Base networkhttps://lowpaymentfee.com
- —USDC asset address 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913 on Base networkhttps://lowpaymentfee.com/api/v1/ach/110
- —Docs, API, pricing, and README pages all render only 'Connect wallet' with no substantive contenthttps://lowpaymentfee.com/docs