Pay-per-call ACH endpoint on Base via x402 — $0.02/request in USDC
What it does
This endpoint at `/api/v1/ach/167` 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 listed price is $0.02 per request with no API keys, no rate limits, and no minimum commitments required.
The specific resource `/api/v1/ach/167` is labeled "Premium API Access" but its exact functionality is unclear from the available documentation. The provider's landing page lists categories including Data & Analytics, AI & Machine Learning, Finance & Web3, and Infrastructure utilities, but this particular ACH-prefixed path does not appear among the documented endpoints. The x402 challenge confirms the endpoint is live, accepts POST requests, and requires up to 20,000 base units of USDC (0.02 USDC, i.e., $0.02) per call on the Base network.
Documentation beyond the landing page is extremely thin — 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 the ACH endpoint returns. Prospective callers should be aware that the actual behavior of this endpoint is undocumented.
Capabilities
Use cases
- —Programmatic access to an ACH-related resource with per-call USDC micropayments
- —Agent-driven workflows that need keyless, pay-as-you-go API access on Base
- —Testing x402 payment protocol integrations against a live endpoint
Fit
Best for
- —Developers experimenting with x402 payment flows
- —Agents that can settle USDC on Base for per-request access
- —Users who want no-signup, no-API-key access to paid endpoints
Not for
- —Users who need well-documented API contracts and response schemas
- —High-volume production workloads requiring SLA guarantees
- —Anyone needing free or fiat-only payment options
Quick start
curl -X POST https://lowpaymentfee.com/api/v1/ach/167 \
-H "Content-Type: application/json" \
-H "X-PAYMENT: <x402-payment-token>"Endpoint
Quality
The endpoint is live and returns a valid x402 challenge, but there is no documentation, no OpenAPI schema, no request/response examples, and the specific purpose of the /api/v1/ach/167 path is unexplained. The docs pages are empty beyond a wallet-connect prompt. This is effectively a stub listing.
Warnings
- —The endpoint path /api/v1/ach/167 does not appear in the provider's listed API catalog — its actual functionality is unknown.
- —All documentation pages (docs, API, pricing, README) render only 'Connect wallet' with no usable content.
- —No OpenAPI schema, request format, or response format is available.
- —The generic label 'Premium API Access' provides no indication of what data or service is returned.
Citations
- —The endpoint returns a 402 x402 challenge requesting 20000 base units of USDC on Basehttps://lowpaymentfee.com/api/v1/ach/167
- —The platform advertises $0.02/request pricing with no API keys, no rate limits, and instant access on Base networkhttps://lowpaymentfee.com
- —USDC asset address 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913 on Base networkhttps://lowpaymentfee.com/api/v1/ach/167
- —Available API categories include Data & Analytics, AI & Machine Learning, Finance & Web3, and Infrastructurehttps://lowpaymentfee.com