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/item/19

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/item/19` is listed as "Premium API Access" and costs $0.02 per call (20,000 base units of USDC with 6 decimals). No API keys, accounts, or rate limits are advertised — callers 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 and settle in USDC on Base.

The endpoint at `/api/v1/item/19` does not appear in the site's public navigation, which lists specific named endpoints. Its generic "Premium API Access" label and numeric item ID suggest it may be a catalog entry or a catch-all item rather than a domain-specific service. No request/response schema documentation was found beyond the x402 challenge's outputSchema indicating it accepts HTTP POST. The docs, pricing, and API pages all rendered only a "Connect wallet" prompt with no additional content.

Capabilities

x402-paymentusdc-basepay-per-requestno-api-keyhttp-post

Use cases

  • —Programmatic access to a pay-per-call API without managing API keys or subscriptions
  • —Agent-driven workflows that need on-demand endpoint access settled in USDC on Base
  • —Testing x402 protocol integrations with a low-cost endpoint

Fit

Best for

  • —Developers or agents wanting zero-signup, pay-as-you-go API access
  • —x402-compatible wallets and agent frameworks on Base
  • —Low-volume or sporadic API consumption where subscriptions are wasteful

Not for

  • —Users who need detailed API documentation or guaranteed SLAs before integrating
  • —High-volume consumers who would benefit from bulk pricing or rate-limited plans
  • —Anyone without a Base-compatible USDC wallet

Quick start

curl -X POST https://lowpaymentfee.com/api/v1/item/19 \
  -H "Content-Type: application/json" \
  -H "X-PAYMENT: <x402-payment-token>"

Endpoint

URLhttps://lowpaymentfee.com/api/v1/item/19
Transporthttp
Protocolx402
Pay to0x1A2B13E97f5F837C8F9FA1F95a1484B7C70d85F3
CurrencyUSD COIN

Quality

0.30/ 1.00

The x402 challenge is live and pricing is clear ($0.02 USDC on Base), but there is no documentation for this specific endpoint's request/response schema, no examples, and the docs/pricing/API pages are empty beyond a wallet-connect prompt. The endpoint path (/api/v1/item/19) is not listed in the site's public catalog, making its actual functionality unknown.

Warnings

  • —No request or response schema documentation available for /api/v1/item/19
  • —The endpoint path does not appear in the site's public API listing — its actual functionality is unclear
  • —All documentation pages (docs, pricing, API, README) rendered only 'Connect wallet' with no content
  • —Generic 'Premium API Access' label provides no indication of what data or service is returned

Citations

Provenance

Indexed fromx402_bazaar
Enriched2026-04-18 23:52:56Z · anthropic/claude-opus-4.6 · v2
First seen2026-04-18
Last seen2026-04-23

Agent access

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