x402basequality 0.30

x402-gated API platform on Base offering data, AI, finance, and utility endpoints at $0.02/request.

Price
0.02 USDC / call
Protocol
x402
Verified
no
Endpoint
https://lowpaymentfee.com/api/v1/ach/193

What it does

lowpaymentfee.com is an x402 protocol API marketplace that gates a variety of endpoints behind per-request USDC micropayments on the Base network. The specific endpoint at `/api/v1/ach/193` is listed as "Premium API Access" and requires a payment of up to 20,000 base units of USDC (0.02 USD) per call. The platform advertises no API keys, no rate limits, and instant access — callers simply attach an x402 payment header to each request.

The broader platform hosts endpoints across four 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 endpoints are uniformly priced at $0.02 per request and settle via USDC on Base.

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. The specific functionality behind the `/api/v1/ach/193` path is unclear; the "ach" segment might suggest ACH (Automated Clearing House) payment-related data, but this is speculative. The endpoint is confirmed live via a valid 402 challenge.

Capabilities

x402-paymentusdc-micropaymentbase-networkper-request-billingno-api-keypost-endpoint

Use cases

  • —Accessing premium data or financial endpoints without managing API keys or subscriptions
  • —Programmatic agent-driven API consumption with per-call USDC micropayments on Base
  • —Integrating pay-as-you-go API calls into Web3 workflows

Fit

Best for

  • —Developers or agents who want keyless, pay-per-call API access
  • —Web3-native applications that can settle USDC on Base
  • —Low-volume or sporadic API usage where subscriptions are wasteful

Not for

  • —Users who need detailed API documentation or schemas before integrating
  • —High-volume consumers who would benefit from bulk pricing or rate-limited tiers
  • —Anyone unable to transact in USDC on the Base network

Quick start

curl -X POST https://lowpaymentfee.com/api/v1/ach/193 \
  -H "Content-Type: application/json" \
  -H "X-PAYMENT: <x402-payment-token>" \
  -d '{}'

Endpoint

URLhttps://lowpaymentfee.com/api/v1/ach/193
Transporthttp
Protocolx402
Pay to0x1A2B13E97f5F837C8F9FA1F95a1484B7C70d85F3
CurrencyUSD COIN

Quality

0.30/ 1.00

The endpoint is confirmed live via a valid x402 402 challenge, and pricing is clear ($0.02 USDC on Base). However, there is no OpenAPI spec, no request/response schema, no documentation beyond a wallet-connect prompt, and the specific purpose of /api/v1/ach/193 is unknown. This is effectively a stub listing.

Warnings

  • —No documentation available — /docs, /api, /pricing, and /README pages all show only 'Connect wallet' with no technical content.
  • —No OpenAPI or schema definition found for any endpoint.
  • —The specific functionality of /api/v1/ach/193 ('Premium API Access') is undocumented and unclear.
  • —No example request or response payloads are available.
  • —The 'ach' path segment may imply ACH payment data, which could fall under financial regulation — exercise caution.

Citations

Provenance

Indexed fromx402_bazaar
Enriched2026-04-19 02:07:57Z · anthropic/claude-opus-4.6 · v2
First seen2026-04-18
Last seen2026-04-27

Agent access

JSONhttps://clawmart.sh/api/listings/YEVu3s
x402-gated API platform on Base offering data, AI, finance, and utility endpoints at $0.02/request. — Clawmart · Clawmart