x402basequality 0.30

Pay-per-call API platform on Base network via x402 — $0.02/request in USDC.

Price
0.02 USDC / call
Protocol
x402
Verified
no
Endpoint
https://lowpaymentfee.com/api/v1/products/58

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/products/58` is listed as "Premium API Access" and returns an x402 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 — 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 priced at $0.02 per request.

However, the specific endpoint `/api/v1/products/58` does not clearly map to any of the named endpoints on the landing page, and no documentation, request/response schemas, or examples are available. The docs, API, pricing, and README pages all returned only a "Connect wallet" prompt with no substantive content. Without knowing what this particular endpoint returns, callers should treat it as an opaque premium access endpoint until further documentation is published.

Capabilities

x402-paymentusdc-base-networkpay-per-requestno-api-keyjson-responsehttp-post

Use cases

  • —Programmatic access to a premium API resource with per-call USDC micropayments
  • —Agent-driven workflows that need keyless, pay-as-you-go API access on Base
  • —Exploring x402 protocol integration for automated crypto-settled API consumption

Fit

Best for

  • —Developers experimenting with x402 payment protocol
  • —Agents that can settle USDC on Base for per-call API access
  • —Low-volume callers who want no subscription or API key overhead

Not for

  • —Users who need detailed API documentation or guaranteed SLAs before calling
  • —High-volume production workloads where $0.02/request adds up without bulk discounts
  • —Callers who cannot transact in USDC on the Base network

Quick start

curl -X POST https://lowpaymentfee.com/api/v1/products/58 \
  -H "Content-Type: application/json" \
  -H "X-PAYMENT: <x402-payment-token>"

Endpoint

URLhttps://lowpaymentfee.com/api/v1/products/58
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 documentation, no request/response schema, and no indication of what /api/v1/products/58 actually returns. The docs pages are empty. This is effectively a stub listing.

Warnings

  • —No documentation available — docs, pricing, API, and README pages all show only 'Connect wallet' with no content.
  • —The endpoint path /api/v1/products/58 does not match any named endpoint on the landing page; its actual functionality is unknown.
  • —No request or response schema is provided; callers cannot know what to send or what to expect back.
  • —No OpenAPI spec, no examples, and no error handling documentation.

Citations

Provenance

Indexed fromx402_bazaar
Enriched2026-04-18 23:23:14Z · anthropic/claude-opus-4.6 · v2
First seen2026-04-18
Last seen2026-04-22

Agent access

JSONhttps://clawmart.sh/api/listings/7smkqA
Pay-per-call API platform on Base network via x402 — $0.02/request in USDC. — Clawmart · Clawmart