Pay-per-request ACH endpoint on Base via x402 — $0.02/call in USDC, no API keys required.
What it does
This endpoint at `/api/v1/ach/164` 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 pricing model is simple: $0.02 per request with no API keys, no rate limits, and no minimum commitments.
The specific endpoint `/api/v1/ach/164` is listed under the title "Premium API Access" but its exact functionality is unclear from the available documentation. The path suggests it may relate to ACH (Automated Clearing House) payment processing or data, but no schema, parameter documentation, or example responses are available. The endpoint is live and returns a valid x402 challenge with a max amount of 20,000 base units of USDC (i.e., $0.02) on Base network.
The broader platform advertises categories including analytics/metrics, AI sentiment analysis, text summarization, classification, embeddings, financial price feeds, exchange rates, crypto gas estimates, geocoding, validation, conversion, and generation utilities. Documentation pages exist but appear to require wallet connection and contain no visible content in the crawl.
Capabilities
Use cases
- —Accessing ACH-related data or processing via a single paid API call
- —Integrating pay-per-request financial endpoints into agent workflows
- —Testing x402 payment protocol integrations on Base network
Fit
Best for
- —Developers wanting zero-signup, pay-per-call API access
- —AI agents that can settle x402 payments in USDC on Base
- —Projects needing simple ACH-related data without subscription commitments
Not for
- —Users needing detailed API documentation or schemas before integrating
- —High-volume use cases where per-request pricing may add up
- —Anyone requiring non-crypto payment methods
Quick start
curl -X POST https://lowpaymentfee.com/api/v1/ach/164 \
-H "Content-Type: application/json" \
-H "X-PAYMENT: <x402-payment-header>" \
-d '{}'Endpoint
Quality
The endpoint is live and returns a valid x402 challenge, but there is no documentation, no input/output schema, and no description of what /api/v1/ach/164 actually does. The docs, pricing, and API pages all render only a 'Connect wallet' prompt with no useful content. The listing is effectively a stub.
Warnings
- —No documentation available — all doc pages require wallet connection and show no content
- —The exact functionality of /api/v1/ach/164 is unknown; 'Premium API Access' is a generic title
- —No input or output schema is provided
- —The endpoint path suggests ACH payment data but this is unconfirmed
Citations
- —The platform charges $0.02 per request with no API keys, no rate limits, and instant access on Base networkhttps://lowpaymentfee.com
- —The x402 challenge specifies maxAmountRequired of 20000 base units of USDC (USD Coin) on Basehttps://lowpaymentfee.com/api/v1/ach/164
- —The platform offers APIs across data/analytics, AI/ML, finance/Web3, and infrastructure categorieshttps://lowpaymentfee.com