x402-gated premium API access on Base, paid per-call in USDC at $0.02/request.
What it does
This endpoint at lowpaymentfee.com provides "Premium API Access" behind an x402 paywall. It is one of many endpoints offered by the lowpaymentfee.com platform, which hosts a variety of API categories including Data & Analytics, AI & Machine Learning, Finance & Web3, and Infrastructure utilities. All endpoints on the platform share a uniform pricing model of $0.02 per request, settled in USDC on the Base network.
The specific endpoint `/api/v1/stripe/charges/46` accepts POST requests and returns JSON. Its exact functionality is not documented beyond the label "Premium API Access" — it does not appear in the platform's publicly listed API catalog, which focuses on analytics, AI inference, finance, and utility endpoints. The path suggests it may relate to Stripe charge processing or payment-related operations, but this is speculative based solely on the URL structure.
Payment is handled via the x402 protocol: callers receive a 402 challenge requiring an `X-PAYMENT` header with a signed USDC payment of up to 20,000 base units (i.e., $0.02, since USDC uses 6 decimals). Payment is sent to address `0x1A2B13E97f5F837C8F9FA1F95a1484B7C70d85F3` on Base. No API keys, rate limits, or subscriptions are required — access is purely pay-per-call. The platform advertises instant access with no minimums or commitments.
Capabilities
Use cases
- —Programmatic access to a premium API endpoint with per-call USDC micropayments
- —Agent-driven workflows that need keyless, on-demand API access settled on Base
- —Testing x402 payment flows against a live endpoint
Fit
Best for
- —Developers experimenting with x402 payment protocol integrations
- —AI agents that need frictionless, keyless API access via crypto micropayments
- —Low-volume, pay-as-you-go API consumption without subscriptions
Not for
- —Users who need detailed documentation or well-defined input/output schemas before integrating
- —High-volume use cases where per-call pricing at $0.02 may not be cost-effective compared to subscription APIs
Quick start
curl -X POST https://lowpaymentfee.com/api/v1/stripe/charges/46 \
-H "Content-Type: application/json" \
-H "X-PAYMENT: <signed-x402-payment-header>"Endpoint
Quality
The endpoint is live (402 challenge confirmed) and pricing is clear ($0.02 USDC on Base), but there is no documentation of what this specific endpoint does, no input/output schema, no examples, and the docs/pricing/API pages all render only a wallet-connect prompt with no useful content. The endpoint path does not match any of the publicly listed APIs on the homepage.
Warnings
- —The exact functionality of /api/v1/stripe/charges/46 is undocumented — it does not appear in the platform's public API catalog.
- —No input schema or output schema is provided beyond 'application/json' mime type.
- —All documentation, pricing, and API pages behind the homepage require wallet connection and contain no readable content.
- —The 'stripe/charges' path segment suggests payment/charge-related functionality but this is unconfirmed.
Citations
- —The platform lists APIs across Data & Analytics, AI & ML, Finance & Web3, and Infrastructure categories, all priced at $0.02/request.https://lowpaymentfee.com
- —Pricing is $0.02 per request with no API keys, no rate limits, instant access, on Base network.https://lowpaymentfee.com
- —x402 challenge returns maxAmountRequired of 20000 base units in USDC (asset 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913) on Base network.https://lowpaymentfee.com/api/v1/stripe/charges/46