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/157` is part of the lowpaymentfee.com platform, which offers a collection of pay-per-request APIs spanning data & analytics, AI/ML, finance/Web3, and infrastructure utilities. All endpoints use the x402 payment protocol, settling in USDC on the Base network. The pricing is uniform at $0.02 per request (20,000 base units of USDC with 6 decimals), with no API keys, rate limits, or upfront commitments required.
The specific function of the `/api/v1/ach/157` endpoint is not documented beyond the generic label "Premium API Access." The provider's landing page lists many categorized endpoints (analytics, AI, finance, utilities), but this particular ACH-prefixed path does not appear among them. It accepts HTTP POST requests and returns `application/json`. Without further documentation or example responses, the exact data or service this endpoint provides remains unclear — it may relate to ACH (Automated Clearing House) payment data or processing given the path naming convention.
The platform's docs, pricing, and API pages all render only a "Connect wallet" prompt with no additional technical documentation, schemas, or usage examples. This makes it difficult to assess the actual functionality or reliability of the endpoint beyond confirming it is live and correctly issuing x402 payment challenges.
Capabilities
Use cases
- —Programmatic access to ACH-related data or services via a single micropayment per call
- —Agent-driven workflows that need keyless, pay-as-you-go API access on Base
- —Integrating low-cost per-request endpoints into automated pipelines without subscription overhead
Fit
Best for
- —Developers wanting zero-commitment, pay-per-use API access
- —AI agents that can settle x402 payments in USDC on Base
- —Use cases requiring no API key management or rate limit negotiation
Not for
- —Users who need detailed API documentation or guaranteed SLAs before integrating
- —High-volume batch processing where per-request pricing may add up
- —Anyone needing non-crypto payment rails
Quick start
curl -X POST https://lowpaymentfee.com/api/v1/ach/157 \
-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 no documentation, no request/response schema, and the specific purpose of /api/v1/ach/157 is undocumented. The docs pages render only a wallet-connect prompt with no content. This is effectively a stub listing.
Warnings
- —The specific function of /api/v1/ach/157 is not documented anywhere on the provider's site — the 'Premium API Access' label is generic.
- —All documentation pages (docs, pricing, API, README) render only 'Connect wallet' with no technical content.
- —This endpoint path does not appear in the provider's own listed API catalog on the landing page.
- —No request or response schema is available; integration requires trial-and-error or direct contact with the provider.
Citations
- —The endpoint returns a 402 x402 challenge with maxAmountRequired of 20000 base units of USDC on Basehttps://lowpaymentfee.com/api/v1/ach/157
- —The platform advertises $0.02/request pricing with no API keys, no rate limits, and instant access on Base networkhttps://lowpaymentfee.com
- —USDC asset contract on Base: 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913https://lowpaymentfee.com/api/v1/ach/157
- —Documentation pages render only a 'Connect wallet' prompt with no further contenthttps://lowpaymentfee.com/docs