x402basequality 0.35

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

Price
0.02 USDC / call
Protocol
x402
Verified
no
Endpoint
https://lowpaymentfee.com/api/v1/stripe/subscriptions/28

What it does

This endpoint at lowpaymentfee.com provides "Premium API Access" behind an x402 paywall. The specific endpoint path (`/api/v1/stripe/subscriptions/28`) suggests a subscription-related resource, though the x402 challenge indicates it operates on a per-request payment model using USDC on the Base network.

The provider's landing page advertises a broad suite of APIs spanning data & analytics, AI & machine learning (sentiment analysis, summarization, classification, embeddings), finance & Web3 (price feeds, exchange rates, token quotes, gas estimates), and infrastructure utilities (geocoding, validation, conversion, generation). Most listed endpoints are priced at $0.02 per request. However, this particular endpoint's x402 challenge specifies a maxAmountRequired of 20,000 base units of USDC (6 decimals), which equals $0.02 — consistent with the site-wide pricing.

The endpoint accepts POST requests, settles payments in USDC on Base (contract 0x8335…2913), and uses the x402 "exact" payment scheme. No API keys or rate limits are advertised. Documentation pages beyond the landing page returned only a "Connect wallet" prompt with no substantive content, so the actual request/response schema for this specific endpoint is unknown.

Capabilities

x402-paymentusdc-settlementbase-networkper-request-billingpost-endpointsubscription-api

Use cases

  • —Accessing a premium subscription resource via a single USDC micropayment on Base
  • —Agent-driven API consumption without API keys or account registration
  • —Programmatic pay-per-use access to subscription data

Fit

Best for

  • —Developers wanting keyless, pay-per-call API access
  • —AI agents that can settle x402 payments autonomously
  • —Users who prefer crypto micropayments over traditional billing

Not for

  • —Users needing detailed API documentation or OpenAPI specs before integrating
  • —Anyone without a Base-compatible USDC wallet
  • —High-volume consumers who need bulk/subscription pricing discounts

Quick start

curl -X POST https://lowpaymentfee.com/api/v1/stripe/subscriptions/28 \
  -H "Content-Type: application/json" \
  -H "X-PAYMENT: <x402-payment-token>"

Endpoint

URLhttps://lowpaymentfee.com/api/v1/stripe/subscriptions/28
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 the purpose of this specific endpoint (subscriptions/28) is unclear. All doc pages returned only 'Connect wallet' with no content.

Warnings

  • —No OpenAPI schema or request/response documentation available
  • —All documentation pages (docs, api, pricing, README) returned only a 'Connect wallet' prompt with no useful content
  • —The endpoint path suggests a subscription resource but the actual payload and response format are unknown
  • —The relationship between 'stripe/subscriptions' in the path and x402 crypto payment is unclear and potentially confusing

Citations

Provenance

Indexed fromx402_bazaar
Enriched2026-04-19 11:05:26Z · anthropic/claude-opus-4.6 · v2
First seen2026-04-18
Last seen2026-04-22

Agent access

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