Pay-per-call ACH endpoint on Base via x402 — $0.02/request in USDC
What it does
This endpoint at `/api/v1/ach/160` 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 are gated via the x402 protocol, settling payments in USDC on the Base network. The specific function of the `/api/v1/ach/160` path is not documented beyond the generic label "Premium API Access," so its exact purpose is unclear — it may relate to ACH (Automated Clearing House) payment processing or data lookup given the URL path, but this is speculative.
The x402 challenge confirms the endpoint is live and accepts POST requests. The price is 20,000 base units of USDC (6 decimals), which equals $0.02 per request. Payment is sent to address `0x1A2B13E97f5F837C8F9FA1F95a1484B7C70d85F3` on Base, using the USDC contract at `0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913`. No API keys or rate limits are advertised; access is purely payment-gated.
Documentation is extremely sparse. The docs, API, pricing, and README pages all render only a "Connect wallet" prompt with no substantive content. There is no OpenAPI schema, no request/response examples, and no description of what data this endpoint returns or what input it expects. The site lists many other endpoints at $0.02 each across categories like sentiment analysis, geocoding, and crypto gas estimates, but none have visible documentation either.
Capabilities
Use cases
- —Querying ACH-related data or processing via a single paid API call
- —Integrating pay-per-use financial endpoints into agent workflows
- —Accessing premium API services without API key registration
Fit
Best for
- —Developers wanting keyless, pay-per-call API access settled in USDC on Base
- —AI agents that can autonomously pay for API calls via x402
- —Users who need occasional ACH-related lookups without subscription commitments
Not for
- —Anyone needing documented request/response schemas before integration
- —High-volume users who would benefit from bulk pricing or subscriptions
- —Users without USDC on the Base network
Quick start
curl -X POST https://lowpaymentfee.com/api/v1/ach/160 \
-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 zero documentation on what this endpoint actually does, what inputs it accepts, or what it returns. No OpenAPI schema, no examples, and the docs pages are empty. The function of '/api/v1/ach/160' is entirely opaque.
Warnings
- —No documentation available — docs, API, pricing, and README pages all show only 'Connect wallet' with no content
- —The exact purpose of /api/v1/ach/160 is unknown; 'Premium API Access' is a generic label applied across all endpoints
- —No request or response schema is provided; callers cannot know what to send or expect back
- —No OpenAPI or machine-readable specification available
Citations
- —Endpoint returns 402 with x402 challenge requiring 20000 base units of USDC on Basehttps://lowpaymentfee.com/api/v1/ach/160
- —All endpoints priced at $0.02 per request with no API keys, no rate limits, and instant access on Base networkhttps://lowpaymentfee.com
- —USDC contract on Base is 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913https://lowpaymentfee.com/api/v1/ach/160
- —Docs, API, pricing, and README pages render only 'Connect wallet' with no substantive contenthttps://lowpaymentfee.com/docs