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/40

What it does

lowpaymentfee.com hosts a collection of pay-per-request API endpoints settled via the x402 protocol on the Base network using USDC. The specific endpoint at `/api/v1/ach/40` is listed as "Premium API Access" and accepts POST requests. Payment is $0.02 per call (20,000 base units of USDC with 6 decimals), sent to the on-chain address `0x1A2B13E97f5F837C8F9FA1F95a1484B7C70d85F3` on Base. No API keys, rate limits, or upfront commitments are required — callers simply attach an x402 payment header to each request.

The broader platform advertises endpoints across several categories: data & analytics (metrics, reports, data export, insights), AI & machine learning (sentiment analysis, text summarization, classification, embeddings), finance & Web3 (price feeds, exchange rates, token quotes, gas estimates), and infrastructure utilities (geocoding, validation, conversion, generation). All are priced at $0.02 per request. However, the specific functionality behind the `/api/v1/ach/40` path is not documented — the name "Premium API Access" and the "ach" path segment suggest it may relate to ACH (Automated Clearing House) payment processing or information, but this is speculative.

Documentation is extremely thin. The /docs, /pricing, /api, and /README pages all render only a "Connect wallet" prompt with no further content. There is no OpenAPI schema, no request/response examples, and no description of what data or service this particular endpoint returns. The endpoint is confirmed live (returns a valid x402 402 challenge), but callers should be aware that the actual behavior behind the paywall is undocumented.

Capabilities

x402-paymentusdc-settlementbase-networkpay-per-requestno-api-keypost-endpoint

Use cases

  • —Programmatic access to an ACH-related service with per-call USDC micropayments
  • —Agent-driven API consumption without pre-registration or API key management
  • —Integrating pay-as-you-go endpoints into automated workflows on Base

Fit

Best for

  • —Developers wanting keyless, pay-per-request API access settled on-chain
  • —AI agents that can attach x402 payment headers autonomously
  • —Users who prefer no subscription commitments and micro-transaction pricing

Not for

  • —Anyone needing documented request/response schemas before integrating
  • —High-volume use cases where $0.02/request adds up significantly
  • —Users without a Base-compatible USDC wallet

Quick start

curl -X POST https://lowpaymentfee.com/api/v1/ach/40 \
  -H "Content-Type: application/json" \
  -H "X-PAYMENT: <x402-payment-token>" \
  -d '{}'

Endpoint

URLhttps://lowpaymentfee.com/api/v1/ach/40
Transporthttp
Protocolx402
Pay to0x1A2B13E97f5F837C8F9FA1F95a1484B7C70d85F3
CurrencyUSD COIN

Quality

0.25/ 1.00

The endpoint is confirmed live with a valid x402 402 challenge, but there is zero documentation on what the endpoint actually does, no request/response schema, and no examples. The docs pages are empty. The purpose of '/api/v1/ach/40' is unclear, making this effectively a stub listing.

Warnings

  • —No documentation available — /docs, /pricing, /api, and /README all show only 'Connect wallet'
  • —No OpenAPI or output schema describing request parameters or response format
  • —The actual functionality behind '/api/v1/ach/40' is unknown; 'Premium API Access' is the only description
  • —The 'ach' path segment may imply regulated financial services (ACH payments) — verify compliance before use

Citations

Provenance

Indexed fromx402_bazaar
Enriched2026-04-19 01:08:45Z · anthropic/claude-opus-4.6 · v2
First seen2026-04-18
Last seen2026-04-27

Agent access

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