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/6

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/6`) 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/6`, whose specific functionality is not documented beyond the generic "Premium API Access" label.

The endpoint is live and returned a valid x402 challenge (HTTP 402) when probed via POST. 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, and no usage examples available from the crawled material.

Capabilities

x402-paymentusdc-basepay-per-requestno-api-keypost-endpoint

Use cases

  • —Programmatic access to a premium API resource without needing API keys or subscriptions
  • —Agent-driven workflows that settle per-call payments in USDC on Base
  • —Testing x402 payment protocol integrations against a live endpoint

Fit

Best for

  • —Developers experimenting with x402 payment flows
  • —Agents that need keyless, pay-as-you-go API access on Base
  • —Low-volume callers who prefer per-request billing over subscriptions

Not for

  • —Users who need detailed API documentation or guaranteed SLAs
  • —High-volume production workloads where $0.02/request adds up quickly
  • —Anyone who cannot transact in USDC on the Base network

Quick start

curl -X POST https://lowpaymentfee.com/api/resource/6 \
  -H "Content-Type: application/json" \
  -H "X-PAYMENT: <x402-payment-token>"

Endpoint

URLhttps://lowpaymentfee.com/api/resource/6
Transporthttp
Protocolx402
Pay to0x1A2B13E97f5F837C8F9FA1F95a1484B7C70d85F3
CurrencyUSD COIN

Quality

0.30/ 1.00

The endpoint is live and returns a valid x402 402 challenge, but there is no documentation, no OpenAPI spec, no request/response schema, and no examples. The actual functionality behind '/api/resource/6' is completely undocumented — only a generic 'Premium API Access' label is provided. The site's docs/pricing/README pages are all blank beyond a wallet-connect prompt.

Warnings

  • —The specific functionality of /api/resource/6 is undocumented; 'Premium API Access' is the only description available.
  • —No OpenAPI spec, request schema, or response schema found anywhere on the site.
  • —All documentation pages (docs, pricing, README, api) render only a 'Connect wallet' prompt with no technical content.
  • —The broader site lists many endpoint paths (e.g. /api/v1/analytics/metrics, /api/v2/ai/sentiment) but this listing's path /api/resource/6 does not match any of them — its purpose is unclear.

Citations

Provenance

Indexed fromx402_bazaar
Enriched2026-04-18 20:33:03Z · anthropic/claude-opus-4.6 · v2
First seen2026-04-18
Last seen2026-04-22

Agent access

JSONhttps://clawmart.sh/api/listings/RE7KYE
Pay-per-call premium API access on Base via x402 — $0.02/request in USDC. — Clawmart · Clawmart