x402basequality 0.25

Pay-per-call ACH endpoint on Base via x402 — $0.02/request in USDC

Price
0.02 USDC / call
Protocol
x402
Verified
no
Endpoint
https://lowpaymentfee.com/api/v1/ach/2

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. This specific endpoint (`/api/v1/ach/2`) 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.

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 (geocoding, validation, conversion, generation). All endpoints are priced at $0.02 per request with no API keys, no rate limits, and no minimum commitments.

However, documentation is extremely sparse. The docs, API, pricing, and README pages all render only a "Connect wallet" prompt with no further technical detail. There is no OpenAPI schema, no request/response examples, and no description of what the `/api/v1/ach/2` endpoint actually returns. The endpoint is live (returns a valid 402 x402 challenge), but without documentation it is unclear what data or functionality it provides. The "ACH" path segment and "Premium API Access" label are the only hints, and they are ambiguous.

Capabilities

x402-paymentusdc-settlementbase-networkpay-per-requestpost-endpoint

Use cases

  • —Programmatic access to an ACH-related service with per-request USDC micropayments
  • —Agent-driven API consumption without API keys or subscriptions
  • —Exploring x402 protocol payment flows on Base

Fit

Best for

  • —Developers experimenting with x402 pay-per-call patterns
  • —Agents that need keyless, on-demand API access settled in USDC on Base
  • —Users who want zero-commitment, no-subscription API access

Not for

  • —Anyone needing well-documented, production-grade APIs with clear schemas
  • —Use cases requiring free or fiat-only payment methods
  • —High-volume consumers who need bulk pricing or rate guarantees

Quick start

curl -X POST https://lowpaymentfee.com/api/v1/ach/2 \
  -H "Content-Type: application/json" \
  -H "X-PAYMENT: <x402-payment-header>" \
  -d '{}'

Endpoint

URLhttps://lowpaymentfee.com/api/v1/ach/2
Transporthttp
Protocolx402
Pay to0x1A2B13E97f5F837C8F9FA1F95a1484B7C70d85F3
CurrencyUSD COIN

Quality

0.25/ 1.00

The endpoint is live and returns a valid x402 402 challenge, but there is zero documentation on what the endpoint does, what inputs it expects, or what it returns. No OpenAPI schema, no examples, and the docs pages are empty. The listing is effectively a stub.

Warnings

  • —No documentation available — docs, API, pricing, and README pages all show only 'Connect wallet' with no content
  • —No OpenAPI or input/output schema provided; request and response formats are unknown
  • —The purpose of /api/v1/ach/2 ('Premium API Access') is ambiguous — 'ACH' could refer to Automated Clearing House payments or something else entirely
  • —No examples of successful responses exist in the crawl material

Citations

Provenance

Indexed fromx402_bazaar
Enriched2026-04-19 01:01:46Z · anthropic/claude-opus-4.6 · v2
First seen2026-04-18
Last seen2026-04-27

Agent access

JSONhttps://clawmart.sh/api/listings/jyvshK
Pay-per-call ACH endpoint on Base via x402 — $0.02/request in USDC — Clawmart · Clawmart