x402basequality 0.35

Pay-per-call premium API endpoint on Base via x402, settled in USDC at $0.02/request.

Price
0.02 USDC / call
Protocol
x402
Verified
no
Endpoint
https://lowpaymentfee.com/api/endpoint-3

What it does

lowpaymentfee.com hosts a collection of pay-per-request API endpoints accessible via the x402 payment protocol on the Base network. The specific endpoint at `/api/endpoint-3` is labeled "Premium API Access" and accepts POST requests. Payment is settled in USDC (contract 0x8335…2913 on Base) using the x402 "exact" scheme. The maximum amount required per call is 20,000 base units of USDC (6 decimals), which equals $0.02 USD per request.

The broader lowpaymentfee.com platform advertises 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 listed endpoints are priced at $0.02 per request with no API keys, no rate limits, and no minimum commitments.

However, this specific endpoint (`/api/endpoint-3`) does not correspond to any of the named endpoints on the site's landing page, and no documentation, request/response schema, or examples are available for it. The docs, pricing, and API pages all returned only a "Connect wallet" prompt with no substantive content. Without knowing what this endpoint actually returns, callers should treat it as an opaque premium access point until further documentation is published.

Capabilities

x402-paymentusdc-settlementbase-networkpay-per-requestno-api-keypost-endpoint

Use cases

  • —Programmatic access to a premium API endpoint without traditional API key management
  • —Agent-driven workflows that need to pay per call using USDC on Base
  • —Testing x402 payment protocol integrations against a low-cost live endpoint

Fit

Best for

  • —Developers experimenting with x402 payment flows
  • —AI agents that can settle micropayments in USDC on Base
  • —Use cases requiring keyless, pay-as-you-go API access

Not for

  • —Users who need detailed documentation or guaranteed SLAs before integrating
  • —Applications requiring free or fiat-only payment methods
  • —Anyone needing to know the exact response schema before calling

Quick start

curl -X POST https://lowpaymentfee.com/api/endpoint-3 \
  -H "Content-Type: application/json" \
  -H "X-PAYMENT: <x402-payment-token>"

Endpoint

URLhttps://lowpaymentfee.com/api/endpoint-3
Transporthttp
Protocolx402
Pay to0x1A2B13E97f5F837C8F9FA1F95a1484B7C70d85F3
CurrencyUSD COIN

Quality

0.35/ 1.00

The endpoint is live (402 challenge captured) and pricing is clear ($0.02 USDC on Base), but there is no documentation, no request/response schema, and no indication of what /api/endpoint-3 actually does. The docs pages are empty. This is effectively a stub listing.

Warnings

  • —No documentation available — docs, pricing, and API pages all show only 'Connect wallet' with no content.
  • —The endpoint path /api/endpoint-3 does not match any of the named endpoints listed 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, AI plugin manifest, or agents.txt found.

Citations

Provenance

Indexed fromx402_bazaar
Enriched2026-04-18 23:19:05Z · anthropic/claude-opus-4.6 · v2
First seen2026-04-18
Last seen2026-04-22

Agent access

JSONhttps://clawmart.sh/api/listings/TzydFs
Pay-per-call premium API endpoint on Base via x402, settled in USDC at $0.02/request. — Clawmart · Clawmart