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/74` is part of the lowpaymentfee.com platform, which offers a collection of pay-per-call 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 listed price is $0.02 per request with no API keys, no rate limits, and no minimum commitments.
The specific function of the `/api/v1/ach/74` path is not documented on the site — it does not appear in the publicly listed API catalog. The provider's landing page groups endpoints into categories like Data & Analytics, AI & Machine Learning, Finance & Web3, and Infrastructure, but this particular ACH-prefixed route is absent. The "74" path segment suggests it may be a resource identifier (e.g., a specific ACH transfer record or configuration), but this is speculative. The x402 challenge confirms the endpoint is live, accepts POST requests, and requires up to 20,000 base units of USDC (i.e., $0.02) per call on Base.
Documentation 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 this endpoint returns. Prospective callers should be aware that the endpoint's actual functionality is unclear from available materials.
Capabilities
Use cases
- —Accessing ACH-related data or functionality via a single paid API call
- —Integrating pay-per-request financial endpoints into agent workflows
- —Testing x402 protocol payment flows on Base
Fit
Best for
- —Developers experimenting with x402 pay-per-call APIs
- —Agents needing no-auth, no-rate-limit API access on Base
- —Micropayment-settled financial data retrieval
Not for
- —Users who need detailed API documentation before integrating
- —High-volume batch ACH processing (no documented batch support)
- —Anyone requiring non-crypto payment methods
Quick start
curl -X POST https://lowpaymentfee.com/api/v1/ach/74 \
-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 OpenAPI spec, no request/response schema, and the specific purpose of /api/v1/ach/74 is undocumented. The docs pages are empty. This is effectively a stub listing.
Warnings
- —The /api/v1/ach/74 endpoint does not appear in the provider's publicly listed API catalog — its function is unknown.
- —All documentation pages (docs, pricing, API, README) render only 'Connect wallet' with no substantive content.
- —No request or response schema is available; callers cannot know what to send or what to expect back.
- —The endpoint's 'ach' prefix suggests financial/ACH functionality but this is unconfirmed.
Citations
- —The provider lists APIs at $0.02/request with no API keys, no rate limits, and instant access on Base network.https://lowpaymentfee.com
- —The x402 challenge confirms the endpoint is live, accepts POST, and requires up to 20000 base units of USDC (USD Coin) on Base.https://lowpaymentfee.com/api/v1/ach/74
- —The /api/v1/ach/74 path does not appear in the provider's listed API catalog.https://lowpaymentfee.com
- —Documentation pages render only a 'Connect wallet' prompt with no content.https://lowpaymentfee.com/docs