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/86` 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 payment protocol, settling in USDC on the Base network. The specific function of the `/api/v1/ach/86` path is not documented — the provider labels it generically as "Premium API Access" — so its exact purpose is unclear. It may relate to ACH (Automated Clearing House) banking data or operations given the URL path, but this is speculative.
The endpoint is live and returns a valid x402 challenge. Pricing is $0.02 per request (20,000 base units of USDC with 6 decimals = $0.02), consistent with the platform's uniform pricing across all listed APIs. Payment is made via the x402 `exact` scheme to a specified wallet address on Base. The platform advertises no API keys, no rate limits, and instant access — you simply attach an x402 payment header to each request.
Documentation is extremely sparse. The docs, API, pricing, and README pages all render only a "Connect wallet" prompt with no additional content. There is no OpenAPI schema, no request/response examples, and no description of what this specific endpoint accepts or returns beyond `application/json`. Agents should treat this as a low-documentation endpoint where the actual behavior must be discovered experimentally.
Capabilities
Use cases
- —Accessing ACH-related data or operations via a single pay-per-call request
- —Integrating low-cost API calls into agent workflows without managing API keys
- —Experimenting with x402 payment protocol on Base network
Fit
Best for
- —Developers exploring x402 payment-gated APIs
- —Agents needing keyless, pay-per-request access to utility endpoints
- —Low-volume or sporadic API usage where subscriptions are overkill
Not for
- —Production workloads requiring well-documented, schema-validated APIs
- —High-volume use cases where per-request pricing adds up quickly
- —Users who need detailed documentation or SLA guarantees
Quick start
curl -X POST https://lowpaymentfee.com/api/v1/ach/86 \
-H "Content-Type: application/json" \
-H "X-PAYMENT: <x402-payment-token>" \
-d '{}'Endpoint
Quality
The endpoint is live and returns a valid x402 challenge, but there is virtually no documentation: no OpenAPI schema, no request/response examples, no description of what the endpoint actually does. The docs pages are empty ("Connect wallet" only). The specific purpose of /api/v1/ach/86 is unknown.
Warnings
- —The exact function of /api/v1/ach/86 is undocumented — 'Premium API Access' is a generic label applied across the platform
- —All documentation pages (docs, API, pricing, README) render only 'Connect wallet' with no usable content
- —No OpenAPI schema, no request/response examples, and no input parameter documentation available
- —The 'ach' in the URL path suggests ACH banking operations, which may involve regulated financial activity — verify compliance requirements
Citations
- —The endpoint returns a valid x402 challenge with maxAmountRequired of 20000 base units of USDC on Basehttps://lowpaymentfee.com/api/v1/ach/86
- —Platform-wide pricing is $0.02 per request with no API keys, no rate limits, and instant accesshttps://lowpaymentfee.com
- —USDC asset contract on Base is 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913https://lowpaymentfee.com/api/v1/ach/86
- —Documentation pages render only 'Connect wallet' with no additional contenthttps://lowpaymentfee.com/docs