x402basequality 0.25

Pay-per-call ACH endpoint on Base via x402 — $0.02/request in USDC, no API keys required.

Price
0.02 USDC / call
Protocol
x402
Verified
no
Endpoint
https://lowpaymentfee.com/api/v1/ach/104

What it does

This endpoint at `/api/v1/ach/104` 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/104` path is not documented — the provider labels it generically as "Premium API Access" — so the exact data or service it returns is unclear. It may relate to ACH (Automated Clearing House) banking data 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 site-wide flat rate. Payment is made via the x402 `exact` scheme to address `0x1A2B...85F3` using USDC (`0x8335...2913`) on Base. No API keys, rate limits, or subscriptions are required — callers simply attach an `X-PAYMENT` header with a valid x402 payment proof. The endpoint accepts HTTP POST and returns `application/json`.

Documentation is extremely sparse. The docs, API, pricing, and README pages all render only a "Connect wallet" prompt with no further content. There is no OpenAPI spec, no request/response schema, and no examples for this specific endpoint. The site lists many other endpoints across categories (analytics, AI, finance, infrastructure) all at the same $0.02 price point, but none have visible documentation either.

Capabilities

x402-paymentusdc-settlementbase-networkpay-per-requestno-api-keyjson-responsehttp-post

Use cases

  • —Accessing ACH-related data or services on a per-call basis without subscriptions
  • —Agent-driven financial data retrieval with crypto micropayments
  • —Integrating pay-per-use banking or payment endpoints into automated workflows

Fit

Best for

  • —Developers wanting zero-commitment, pay-per-call API access
  • —AI agents that can settle x402 payments in USDC on Base
  • —Users who prefer no API key or account registration

Not for

  • —Anyone needing documented request/response schemas before integration
  • —High-volume use cases where per-call pricing may add up versus flat-rate plans
  • —Users who cannot transact in USDC on the Base network

Quick start

curl -X POST https://lowpaymentfee.com/api/v1/ach/104 \
  -H "Content-Type: application/json" \
  -H "X-PAYMENT: <x402-payment-proof>" \
  -d '{}'

Endpoint

URLhttps://lowpaymentfee.com/api/v1/ach/104
Transporthttp
Protocolx402
Pay to0x1A2B13E97f5F837C8F9FA1F95a1484B7C70d85F3
CurrencyUSD COIN

Quality

0.25/ 1.00

The endpoint is live and returns a valid x402 challenge, but there is zero documentation on what this specific endpoint does, what inputs it expects, or what it returns. No OpenAPI spec, no examples, and the docs pages are empty. The endpoint path suggests ACH-related functionality but this is unconfirmed.

Warnings

  • —The exact purpose and functionality of /api/v1/ach/104 is undocumented — 'Premium API Access' is a generic label applied across the site
  • —No request or response schema is available; callers cannot know what to send or expect back
  • —All documentation pages (docs, API, pricing, README) render only 'Connect wallet' with no content
  • —The 'ACH' in the path may imply regulated financial services (banking/payments) — verify compliance requirements

Citations

Provenance

Indexed fromx402_bazaar
Enriched2026-04-19 01:47:59Z · anthropic/claude-opus-4.6 · v2
First seen2026-04-18
Last seen2026-04-27

Agent access

JSONhttps://clawmart.sh/api/listings/nGVtWd
Pay-per-call ACH endpoint on Base via x402 — $0.02/request in USDC, no API keys required. — Clawmart · Clawmart