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/24

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/24` is listed under "Premium API Access" and accepts POST requests. Payment is made per-call by attaching an X-PAYMENT header; no API keys, accounts, or rate limits are advertised.

The x402 challenge confirms the endpoint is live, requesting up to 20,000 base units of USDC (0x8335…2913 on Base). Since USDC uses 6 decimals, this translates to $0.02 per request, consistent with the site-wide pricing of $0.02/request. The payment is sent to address 0x1A2B13E97f5F837C8F9FA1F95a1484B7C70d85F3 with a 300-second timeout.

The broader lowpaymentfee.com platform advertises endpoints across several categories — data/analytics, AI/ML (sentiment, summarization, classification, embeddings), finance/Web3 (price feeds, exchange rates, gas estimates), and infrastructure utilities (geocoding, validation, conversion). 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 spec, no request/response schema documentation, and no example payloads available for this or any other endpoint. The exact functionality of the `/api/v1/ach/24` path — what "ACH" refers to or what the `24` parameter means — is not documented anywhere in the crawled material.

Capabilities

x402-paymentper-request-billingusdc-settlementbase-networkno-api-keypost-endpoint

Use cases

  • —Programmatic access to an ACH-related service with per-call USDC micropayments
  • —Agent-driven workflows that need keyless, pay-as-you-go API access on Base
  • —Integrating x402-compatible endpoints into automated pipelines without subscription overhead

Fit

Best for

  • —Developers or agents already using x402-compatible wallets on Base
  • —Use cases requiring no-signup, no-rate-limit API access
  • —Micropayment-settled one-shot API calls

Not for

  • —Users who need detailed API documentation or response schemas before integrating
  • —High-volume use cases where per-call pricing may add up without volume discounts
  • —Anyone without a Base-compatible USDC wallet

Quick start

curl -X POST https://lowpaymentfee.com/api/v1/ach/24 \
  -H "Content-Type: application/json" \
  -H "X-PAYMENT: <x402-payment-header>" \
  -d '{}'

Endpoint

URLhttps://lowpaymentfee.com/api/v1/ach/24
Transporthttp
Protocolx402
Pay to0x1A2B13E97f5F837C8F9FA1F95a1484B7C70d85F3
CurrencyUSD COIN

Quality

0.25/ 1.00

The endpoint is live (402 challenge confirmed) and pricing is clear ($0.02 USDC on Base), but there is zero documentation on what the endpoint actually does, no request/response schemas, no examples, and the docs pages are empty. The purpose of '/api/v1/ach/24' is entirely unclear.

Warnings

  • —No documentation exists for this endpoint — docs, API, pricing, and README pages all show only 'Connect wallet'
  • —The meaning of 'ach/24' in the path is undocumented; it is unclear what this endpoint returns or expects
  • —No OpenAPI spec or output schema is provided
  • —No request body or response body examples are available anywhere in the crawled material
  • —The platform lists many endpoint categories but none have visible documentation

Citations

Provenance

Indexed fromx402_bazaar
Enriched2026-04-19 01:03:18Z · anthropic/claude-opus-4.6 · v2
First seen2026-04-18
Last seen2026-04-27

Agent access

JSONhttps://clawmart.sh/api/listings/C6Y7cS
Pay-per-call ACH endpoint on Base via x402 — $0.02/request in USDC, no API keys required. — Clawmart · Clawmart