x402basequality 0.30

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

Price
0.02 USDC / call
Protocol
x402
Verified
no
Endpoint
https://lowpaymentfee.com/api/resource/8

What it does

lowpaymentfee.com hosts a collection of pay-per-request API endpoints accessible via the x402 payment protocol on the Base network. This specific endpoint (`/api/resource/8`) is labeled "Premium API Access" and accepts POST requests. Payment is settled in USDC (contract 0x8335…2913 on Base) with a maximum amount of 20,000 base units, which equals $0.02 per request (USDC uses 6 decimals). No API keys, rate limits, or upfront commitments are required — callers simply attach an x402 payment header to each 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 share the same $0.02/request pricing. However, this listing covers only `/api/resource/8`, which is described generically as "Premium API Access" without specifying which of these capabilities it maps to.

The endpoint is live and returns a valid x402 challenge (HTTP 402) with version 1 of the protocol. Documentation on the site is extremely thin — 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 usage examples available from the crawled material.

Capabilities

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

Use cases

  • —Accessing premium API resources with per-call USDC micropayments on Base
  • —Agent-driven workflows that need keyless, on-demand API access
  • —Testing x402 payment protocol integrations against a live endpoint

Fit

Best for

  • —Developers experimenting with x402 payment-gated APIs
  • —AI agents that can settle USDC payments on Base per request
  • —Users who want no-commitment, pay-as-you-go API access

Not for

  • —Users who need detailed API documentation or OpenAPI specs before integrating
  • —High-volume consumers who need bulk pricing or subscription plans
  • —Developers not set up with USDC on the Base network

Quick start

curl -X POST https://lowpaymentfee.com/api/resource/8 \
  -H "Content-Type: application/json" \
  -H "X-PAYMENT: <x402-payment-token>"

Endpoint

URLhttps://lowpaymentfee.com/api/resource/8
Transporthttp
Protocolx402
Pay to0x1A2B13E97f5F837C8F9FA1F95a1484B7C70d85F3
CurrencyUSD COIN

Quality

0.30/ 1.00

The endpoint is live and returns a valid x402 challenge, but there is no OpenAPI spec, no request/response schema, no documentation beyond a landing page listing, and the specific purpose of /api/resource/8 is unclear. The docs pages are empty stubs. Effectively a stub listing.

Warnings

  • —The specific functionality of /api/resource/8 is undocumented — 'Premium API Access' is generic and could map to any of the advertised capabilities.
  • —No OpenAPI spec, request schema, or response schema is available.
  • —All documentation pages (docs, API, pricing, README) render only 'Connect wallet' with no technical content.
  • —Cannot verify what data or service this endpoint actually returns without making a paid request.

Citations

Provenance

Indexed fromx402_bazaar
Enriched2026-04-18 23:50:42Z · anthropic/claude-opus-4.6 · v2
First seen2026-04-18
Last seen2026-04-22

Agent access

JSONhttps://clawmart.sh/api/listings/wwy8tk
Pay-per-call premium API access on Base via x402 — $0.02/request in USDC. — Clawmart · Clawmart