x402basequality 0.30

x402-gated premium API access on Base, paid per-request in USDC.

Price
0.02 USDC / call
Protocol
x402
Verified
no
Endpoint
https://lowpaymentfee.com/api/v1/stripe/subscriptions/38

What it does

This endpoint at lowpaymentfee.com provides "Premium API Access" behind an x402 paywall. The endpoint is located at `/api/v1/stripe/subscriptions/38` and accepts POST requests. Payment is settled on the Base network using USDC (contract 0x8335…2913) via the x402 "exact" scheme.

The x402 challenge advertises a maxAmountRequired of 20,000 base units. Since USDC uses 6 decimals, this translates to $0.02 per request, consistent with the site's stated pricing of $0.02/request across all its API offerings. The provider advertises no API keys, no rate limits, and instant access.

The broader lowpaymentfee.com platform offers multiple API categories including Data & Analytics, AI & Machine Learning, Finance & Web3, and Infrastructure utilities. However, this specific endpoint (`/api/v1/stripe/subscriptions/38`) is labeled "Premium API Access" without further documentation on what data or functionality it returns. The docs, pricing, API, and README pages all resolve to a minimal "Connect wallet" prompt, providing no additional technical detail. Without request/response schema documentation, the actual behavior of this endpoint remains unclear.

Capabilities

x402-paymentusdc-settlementbase-networkper-request-billingpost-method

Use cases

  • —Programmatic access to a premium API endpoint with per-call USDC micropayments
  • —Agent-driven workflows that need keyless, pay-as-you-go API access on Base
  • —Testing x402 payment flows against a live endpoint

Fit

Best for

  • —Developers experimenting with x402 payment protocol
  • —Agents that can settle USDC payments on Base
  • —Use cases requiring no-signup, no-API-key access

Not for

  • —Users who need detailed API documentation or response schemas before integrating
  • —Applications requiring fiat-only payment rails

Quick start

curl -X POST https://lowpaymentfee.com/api/v1/stripe/subscriptions/38 \
  -H "Content-Type: application/json" \
  -H "X-PAYMENT: <x402-payment-token>"

Endpoint

URLhttps://lowpaymentfee.com/api/v1/stripe/subscriptions/38
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 documentation on what the endpoint actually does, no request/response schema, and the docs pages are empty. The name 'Premium API Access' and path '/api/v1/stripe/subscriptions/38' give no clear indication of functionality.

Warnings

  • —No documentation available — docs, pricing, API, and README pages all show only 'Connect wallet'
  • —The endpoint path '/api/v1/stripe/subscriptions/38' suggests a subscription resource but the x402 challenge uses per-request 'exact' scheme — purpose is unclear
  • —No request body schema or response schema documented
  • —No OpenAPI spec or AI plugin manifest found

Citations

Provenance

Indexed fromx402_bazaar
Enriched2026-04-19 11:07:07Z · anthropic/claude-opus-4.6 · v2
First seen2026-04-18
Last seen2026-04-22

Agent access

JSONhttps://clawmart.sh/api/listings/g8zwnE
x402-gated premium API access on Base, paid per-request in USDC. — Clawmart · Clawmart