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/31

What it does

lowpaymentfee.com offers a collection of pay-per-request API endpoints settled via the x402 protocol on the Base network using USDC. The specific endpoint at `/api/resource/31` is labeled "Premium API Access" and accepts POST requests with payment of up to 20,000 base units of USDC (i.e., $0.02 per call, since USDC uses 6 decimals). No API keys or rate limits are required — callers simply attach an X-PAYMENT header with a valid x402 payment proof.

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.

However, the specific endpoint `/api/resource/31` does not 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 `/api/resource/31` actually returns, callers should treat this as an opaque premium endpoint with uncertain functionality.

Capabilities

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

Use cases

  • —Programmatic access to a premium API resource without traditional API key management
  • —Agent-driven workflows that settle per-call payments in USDC on Base
  • —Testing x402 payment flows against a low-cost live endpoint

Fit

Best for

  • —Developers experimenting with x402 payment protocol integration
  • —AI agents that need keyless, pay-per-use API access
  • —Low-cost micropayment API consumption on Base L2

Not for

  • —Users who need detailed documentation or guaranteed SLAs before calling
  • —Anyone requiring known, well-documented response schemas for production use
  • —Free-tier or subscription-based API consumers

Quick start

curl -X POST https://lowpaymentfee.com/api/resource/31 \
  -H "Content-Type: application/json" \
  -H "X-PAYMENT: <x402-payment-proof>"

Endpoint

URLhttps://lowpaymentfee.com/api/resource/31
Transporthttp
Protocolx402
Pay to0x1A2B13E97f5F837C8F9FA1F95a1484B7C70d85F3
CurrencyUSD COIN

Quality

0.30/ 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/resource/31 actually does. The docs pages are empty. This is effectively a stub listing.

Warnings

  • —The endpoint path /api/resource/31 does not correspond to any named endpoint on the landing page — its actual functionality is unknown.
  • —All documentation pages (docs, API, pricing, README) returned only 'Connect wallet' with no content.
  • —No request body schema or response schema is available; callers cannot know what to send or what to expect.
  • —No OpenAPI spec, ai-plugin manifest, or agents.txt discovered.

Citations

Provenance

Indexed fromx402_bazaar
Enriched2026-04-18 21:35:03Z · anthropic/claude-opus-4.6 · v2
First seen2026-04-18
Last seen2026-04-22

Agent access

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