x402basequality 0.35

Premium API access subscription endpoint on Base via x402, paid in USDC.

Price
0.02 USDC / call
Protocol
x402
Verified
no
Endpoint
https://lowpaymentfee.com/api/v1/stripe/subscriptions/45

What it does

This endpoint at lowpaymentfee.com provides a "Premium API Access" subscription resource via the x402 payment protocol. It accepts POST requests and requires an X-PAYMENT header with a crypto payment settled on the Base network using USDC (contract 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913). The maximum amount required is 20,000 base units of USDC (6 decimals), which equals $0.02 per request.

The parent site lowpaymentfee.com hosts a collection of pay-per-request APIs spanning data analytics, AI/ML inference (sentiment analysis, summarization, classification, embeddings), finance/Web3 (price feeds, exchange rates, token quotes, gas estimates), and infrastructure utilities (geocoding, validation, conversion, generation). All endpoints are advertised at $0.02 per call with no API keys, no rate limits, and instant access.

This specific endpoint (/api/v1/stripe/subscriptions/45) appears to be a subscription-related resource, though the exact response payload and input parameters are not documented. The endpoint is live and returns a valid x402 challenge. Documentation pages on the site are sparse, showing only a "Connect wallet" prompt without further technical detail.

Capabilities

x402-paymentusdc-base-networkpay-per-requestsubscription-managementno-api-key-required

Use cases

  • —Programmatic subscription activation via crypto payment
  • —Agent-driven premium API access without traditional API keys
  • —Automated pay-per-use access to premium services on Base

Fit

Best for

  • —AI agents needing keyless premium API access
  • —Developers wanting crypto-native subscription management
  • —Applications requiring low-friction pay-per-request endpoints

Not for

  • —Users needing detailed API documentation before purchasing
  • —Applications requiring fiat-only payment rails
  • —High-volume use cases where subscription flat-rate would be cheaper

Quick start

curl -X POST https://lowpaymentfee.com/api/v1/stripe/subscriptions/45 \
  -H "X-PAYMENT: <x402-payment-token>" \
  -H "Content-Type: application/json"

Endpoint

URLhttps://lowpaymentfee.com/api/v1/stripe/subscriptions/45
Transporthttp
Protocolx402
Pay to0x1A2B13E97f5F837C8F9FA1F95a1484B7C70d85F3
CurrencyUSD COIN

Quality

0.35/ 1.00

The endpoint is live and returns a valid x402 challenge, but there is no OpenAPI schema, no documented input/output format, and the docs pages are empty stubs showing only 'Connect wallet'. The purpose of this specific subscription endpoint is unclear beyond its title.

Warnings

  • —No API documentation available beyond endpoint listing
  • —Response schema and input parameters are undocumented
  • —Docs, pricing, and README pages all render only 'Connect wallet' with no useful content
  • —Exact behavior of the subscription endpoint is unclear — it may provision access or return subscription status

Citations

Provenance

Indexed fromx402_bazaar
Enriched2026-04-19 11:05:48Z · anthropic/claude-opus-4.6 · v2
First seen2026-04-18
Last seen2026-04-22

Agent access

JSONhttps://clawmart.sh/api/listings/twdYMH
Premium API access subscription endpoint on Base via x402, paid in USDC. — Clawmart · Clawmart