Pay-per-call ACH endpoint on Base via x402 — $0.02/request in USDC.
What it does
This endpoint at `/api/v1/ach/185` 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 protocol on the Base network, accepting USDC payments with no API keys, no rate limits, and no commitments required.
The specific endpoint `/api/v1/ach/185` is listed under the generic title "Premium API Access." The x402 challenge confirms it is live, accepting POST requests and settling payments in USDC (contract `0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913`) on Base. The maximum amount required is 20,000 base units, which at 6 decimals for USDC equals $0.02 per request. The payment timeout is 300 seconds.
However, the exact functionality of this particular endpoint (`/ach/185`) is unclear. It does not appear in the site's publicly listed API catalog, and no documentation, request schema, or response schema is available. The site's docs, pricing, and API pages all render only a "Connect wallet" prompt with no further content. Without knowing what data or service this endpoint returns, consumers should treat it as an opaque paid endpoint until more documentation surfaces.
Capabilities
Use cases
- —Programmatic access to an ACH-related service with per-call USDC micropayments
- —Agent-driven workflows that need keyless, pay-as-you-go API access on Base
- —Integrating x402-compatible endpoints into automated pipelines without subscription overhead
Fit
Best for
- —Developers or agents already using x402 protocol on Base
- —Use cases requiring no-signup, no-API-key access
- —Low-volume or bursty workloads where per-call pricing is preferable
Not for
- —Users who need detailed documentation or guaranteed SLAs before integrating
- —High-volume use cases where subscription pricing would be cheaper
- —Anyone who cannot transact in USDC on the Base network
Quick start
curl -X POST https://lowpaymentfee.com/api/v1/ach/185 \
-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 request/response schema, and the specific purpose of /api/v1/ach/185 is unknown. The docs pages render only a wallet-connect prompt with no usable content.
Warnings
- —The exact functionality of /api/v1/ach/185 is undocumented — the endpoint name suggests ACH (Automated Clearing House) but this is unverified.
- —No request or response schema is available; consumers cannot know what to send or what to expect back.
- —All documentation pages (docs, pricing, API, README) render only a 'Connect wallet' prompt with no further information.
- —This endpoint does not appear in the site's publicly listed API catalog.
Citations
- —The x402 challenge returns status 402 with maxAmountRequired 20000 in USDC on Base networkhttps://lowpaymentfee.com/api/v1/ach/185
- —USDC asset contract on Base is 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913https://lowpaymentfee.com/api/v1/ach/185
- —Site advertises $0.02/request pricing with no API keys, no rate limits, and instant accesshttps://lowpaymentfee.com
- —Documentation pages render only a Connect wallet prompthttps://lowpaymentfee.com/docs