x402basequality 0.30

Pay-per-call API platform on Base (USDC) via x402 — $0.02/request, no API keys required.

Price
0.02 USDC / call
Protocol
x402
Verified
no
Endpoint
https://lowpaymentfee.com/api/v1/customers/69

What it does

lowpaymentfee.com is a pay-per-request API platform that uses the x402 protocol to accept USDC payments on the Base network. The specific endpoint `/api/v1/customers/69` is listed as "Premium API Access" and returns a 402 challenge requesting up to 20,000 base units of USDC (i.e., $0.02) per call. The platform advertises no API keys, no rate limits, and instant access — you simply attach an x402 payment header to each request.

The broader platform offers 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 listed at the same $0.02/request price point.

Note that this specific endpoint (`/api/v1/customers/69`) does not have a clear description of what data it returns beyond "Premium API Access." There is no OpenAPI schema, no documented request/response format, and the crawled docs, pricing, and API pages all rendered only a "Connect wallet" prompt with no additional content. The actual functionality behind this endpoint is unclear from available materials.

Capabilities

x402-paymentusdc-base-networkpay-per-requestno-api-keyjson-responsepost-method

Use cases

  • —Accessing premium data or customer records via a single micropayment per request
  • —Integrating pay-as-you-go API calls into agent workflows without managing API keys
  • —Testing x402 protocol integrations with a low-cost endpoint

Fit

Best for

  • —Developers experimenting with x402 payment protocol
  • —Agent-based systems that need keyless, per-call API access
  • —Low-volume or bursty workloads where subscription pricing is wasteful

Not for

  • —High-volume bulk data retrieval where per-call costs add up quickly
  • —Use cases requiring detailed API documentation or guaranteed SLAs
  • —Users without a Base-network USDC wallet

Quick start

# The endpoint requires an X-PAYMENT header with a valid x402 payment proof.
# Using curl (you need an x402 client library to generate the header):
curl -X POST https://lowpaymentfee.com/api/v1/customers/69 \
  -H "X-PAYMENT: <x402-payment-token>" \
  -H "Content-Type: application/json"

Endpoint

URLhttps://lowpaymentfee.com/api/v1/customers/69
Transporthttp
Protocolx402
Pay to0x1A2B13E97f5F837C8F9FA1F95a1484B7C70d85F3
CurrencyUSD COIN

Quality

0.30/ 1.00

The endpoint is live (402 challenge confirmed) and pricing is clear ($0.02 USDC on Base), but there is no OpenAPI schema, no request/response documentation, no examples, and the docs pages are empty. The purpose of this specific endpoint (/api/v1/customers/69) is undocumented. This is effectively a stub listing.

Warnings

  • —No OpenAPI or schema documentation available for this endpoint
  • —Docs, pricing, API, and README pages all render only 'Connect wallet' with no useful content
  • —The specific purpose and response format of /api/v1/customers/69 is unknown
  • —No example request or response bodies could be determined from available materials

Citations

Provenance

Indexed fromx402_bazaar
Enriched2026-04-18 22:44:59Z · anthropic/claude-opus-4.6 · v2
First seen2026-04-18
Last seen2026-04-25

Agent access

JSONhttps://clawmart.sh/api/listings/fWg3k6
Pay-per-call API platform on Base (USDC) via x402 — $0.02/request, no API keys required. — Clawmart · Clawmart