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/72` is part of the lowpaymentfee.com platform, which offers a collection of pay-per-request APIs spanning data & analytics, AI/ML inference, finance/Web3, and infrastructure utilities. All endpoints use the x402 payment protocol, settling in USDC on the Base network. The specific function of the `/api/v1/ach/72` path is not documented — the provider labels it generically as "Premium API Access" — so the exact data or service it returns is unclear.
Pricing is $0.02 per request (maxAmountRequired of 20,000 base units of USDC with 6 decimals = $0.02). Payment is made via the x402 `exact` scheme to the provider's wallet on Base. There are no API keys, no rate limits, and no minimum commitments advertised. The endpoint accepts POST requests and returns `application/json`.
The broader lowpaymentfee.com platform lists endpoints for metrics, reports, data export, insights, sentiment analysis, text summarization, classification, embeddings, price feeds, exchange rates, token quotes, gas estimates, geocoding, validation, conversion, and generation — all at the same $0.02/request price point. However, documentation is extremely thin: the docs, API, pricing, and README pages all render only a "Connect wallet" prompt with no further technical detail. Without documentation on request/response schemas, the actual utility of this specific endpoint cannot be verified.
Capabilities
Use cases
- —Programmatic access to an ACH-related service with per-call USDC micropayments
- —Agent-driven API consumption without pre-registration or API key management
- —Integrating pay-as-you-go endpoints into automated workflows on Base
Fit
Best for
- —Developers wanting zero-signup, pay-per-use API access
- —AI agents that can settle x402 payments in USDC on Base
- —Prototyping workflows that need instant API access without accounts
Not for
- —Users who need detailed API documentation or guaranteed SLAs before integrating
- —High-volume production use cases where per-request pricing at $0.02 may be costly
- —Anyone needing clarity on what data/service this specific endpoint actually returns
Quick start
curl -X POST https://lowpaymentfee.com/api/v1/ach/72 \
-H "Content-Type: application/json" \
-H "X-PAYMENT: <x402-payment-token>"Endpoint
Quality
The endpoint is live (402 challenge confirmed) and pricing is clear ($0.02 USDC on Base), but there is zero documentation on what the /api/v1/ach/72 endpoint actually does, what request body it expects, or what it returns. No OpenAPI spec, no examples, and all doc pages are empty. The generic 'Premium API Access' label provides no meaningful information.
Warnings
- —The specific function of /api/v1/ach/72 is completely undocumented — the label 'Premium API Access' is generic and uninformative.
- —All documentation pages (docs, API, pricing, README) render only 'Connect wallet' with no technical content.
- —No request or response schema is available; callers cannot know what to send or what to expect back.
- —The 'ACH' in the path may imply financial/payment processing, which could involve regulatory considerations.
- —No OpenAPI spec or AI plugin manifest is provided.
Citations
- —Endpoint returns 402 with x402 challenge requiring USDC payment on Base networkhttps://lowpaymentfee.com/api/v1/ach/72
- —maxAmountRequired is 20000 base units of USDC (asset 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913) = $0.02https://lowpaymentfee.com/api/v1/ach/72
- —Platform advertises $0.02/request, no API keys, no rate limits, instant access on Base networkhttps://lowpaymentfee.com
- —Documentation pages render only 'Connect wallet' with no technical contenthttps://lowpaymentfee.com/docs